Excerpts from the:
State of Colorado Department Of Regulatory Agencies State Plumbing Board
PLUMBING RULES AND REGULATIONS 3 CCR 720-1
The Board hereby adopts and incorporates by reference, with certain additions, revisions, and deletions, the following chapters, sections, and appendices of the International Plumbing Code ("IPC") and International Residential Code ("IRC").
These Rules, together with the following incorporated provisions, shall be known as the Colorado Plumbing Code. The Colorado Plumbing Code sets forth the minimum standards governing the inspection, installation, alteration, and repair of the plumbing fixtures, appliances, and systems throughout Colorado. The Colorado Plumbing Code does not include any later amendments to or editions of the IPC or IRC provisions listed below.
Chapter 1, Sections 101.2, 102, 105, 106.1, 106.3, 106.4, 106.5, 106.5.5, 106.6.1, 107,108.1, 110.3 Chapters 2-13, 15; and Appendices B, C, D, and E of the IPC, 2021 edition promulgated by the International Code Council 1st printing (March 2020).
Delete in its entirety and replace with:
102.8 Referenced codes and standards. The codes and standards referenced in this code shall be those that are listed in Chapter 15 and such codes and standards adopted or recognized by the Plumbing Board shall be considered as part of the requirements of this code to the prescribed extent of each such reference.
Add exception reading:
Add new definitions to read:
Direct Supervision. Direct supervision means that the supervising licensed master plumber, journeyman plumber, or residential
plumber is physically present at the same physical addresses listed on the permits and where the apprentice is working or no more than five minutes distance from the apprentice.
Add new definitions to read:
Trap drain. That portion of horizontal piping between the weir of a trap and thepoint where it intersects with the vent serving that same trap (trap arm).
Delete the definition and replace with:
Fixture Drain. That portion of a plumbing drainage system that connects the trap drain to any other drain pipe receiving the discharge from one or more plumbing fixtures.
Delete the definition and replace with:
Graywater. Wastewater that, before being treated or combined with other wastewater, is collected from fixtures within residential, commercial, or industrial buildings or institutional facilities for the purpose of being put to beneficial uses. Sources of graywater are limited to discharges from bathroom and laundry room sinks, bathtubs, showers, and laundry machines. Graywater does not include the wastewater from toilets, urinals, kitchen sinks, dishwashers, or non-laundry utility sinks.
Delete the definition and replace with:
Reclaimed Water. Domestic wastewater that has received secondary treatment by a domestic wastewater treatment works (centralized system or a localized system) and such additional treatment as to enable the wastewater to meet the standards for approved uses.
Delete section in its entirety and replace with:
IPC Section 305.1 Protection against contact. Piping except for, for
cast iron, ductile iron, and galvanized steel shall not be placed in direct contact with steel framing members. Piping shall not be placed in direct contact with concrete or cinder walls and floors, other masonry, and corrosive soil. Where sheathing is used to prevent direct contact, the sheathing shall have a thickness of not less than .025 inch (.6.4 mm). Where sheathing protects piping that penetrates concrete or masonry walls or floors, the sheathing shall be installed in a manner that allows movement of the piping within the sheathing.
308.5 Interval of support
Add new sentence at the end of the section to read:
Hanger support rods shall be sized in accordance with table 308.5.1 Add new Table 308.5.1 Hanger Rod Size
Table 308.5.1 Hanger Rod Size | |
Pipe and Tube Size | Rod Size |
½" - .4" | 3/8" |
5" - 8" | ½" |
10" - 12" | 5/8" |
Delete in its entirety and replace with:
308.7.1 Location. For pipe sizes greater than four inches (102 mm), restraints shall be provided for drain pipes utilizing mechanical joints at all changes in direction and at all changes in diameter greater than two pipe sizes. Braces, blocks, rodding and other suitable methods as specified by the coupling manufacturer shall be utilized.
Delete the words "for piping systems other than plastic" and "After the plumbing fixtures have been set and their traps filled with water, the entire drainage system shall be submitted to final tests. The code official shall require the removal of any cleanouts if necessary to
ascertain whether the pressure has reached all parts of the system."
Delete the words "Plastic piping shall not be tested using air."
Delete in its entirety.
Delete the words "for piping systems other than plastic."
Delete in its entirety.
Delete the verbiage entirely and replace it with:
312.10.2 Testing. Reduced pressure principle, double check, pressure vacuum breaker, reduced pressure detector fire protection, double check detector fire protection, and spill-resistant vacuum breaker backflow preventer assemblies and hose connection backflow preventers shall be tested at the time of installation, immediately after repairs or relocation and at least annually by a certified cross connection control technician, in accordance with the applicable testing procedures associated with each specific certifying agency. When applicable the testing procedure shall be performed for the identified backflow prevention assembly in its entirety in accordance with one of the following applicable standards: ASSE 5013, ASSE 5015, ASSE 5020, ASSE 50.47, ASSE 50.48, ASSE 5052, ASSE 5056, CSA B6.4.10, CSA B6.4.10.1 or the testing procedures provided in the 10th Edition Manual of Cross-Connection Control from the University of Southern California's Foundation for Cross-Connection Control and Hydraulic Research.
The testing procedures from the 10th Edition Manual of Cross- Connection Control from the University of Southern California's Foundation for Cross- Connection Control and Hydraulic Research is incorporated by reference, and may be examined at the Colorado Plumbing Board's office at 1560 Broadway, Suite 1350, Denver,
Colorado 80202, during normal business hours, Monday through Friday, except days designated as state holidays. Certified copies of the 10th Edition Manual of Cross-Connection Control shall be provided at cost, upon request. The Board or the Board's staff will provide information regarding how the 10th Edition Manual of Cross- Connection Control may be examined for free at the state public depository library. The 10th Edition Manual of Cross-Connection Control is also available from the agency, organization or association originally issuing the code, standard, guideline, or rule at: USC Foundation Office, Research Annex 219, Los Angeles, CA 90089-7700 or (https://fccchr.usc.edu/). This rule does not include any later amendments or editions of the code, standard, guideline, or rule.
Add a new sentence to the end of the section to read as follows: Lavatory to water closet or urinal ratios in accordance with Table403.1 shall be maintained in all restrooms.
Add a new paragraph to the end of the section to read as follows:
Exception: All state departments (excluding K-12 schools), state agencies, state institutions of higher education, counties, cities, or municipality buildings that are newly constructed or are being remodeled shall provide an ADA-compliant single-user or an ADA-compliant multi-user non-gendered restrooms as required by section 9-5.7-103, C.R.S.
Add a new exception reading:
Exception: Lavatories located outside a toilet room located within a classroom serving students from that classroom only. These toilet rooms and lavatories shall not count toward the total fixture count required by Table 403.1.
Change first sentence to read:
Where restaurants (or spaces classified as an A2 occupancy) provide drinking water in a container free of charge, drinking fountains shall not be required in (these restaurants and A2 occupancies).
Add new section to read:
Shower head location. Showerheads shall be located on the sidewall ofshower compartments or be arranged so the shower head does not discharge directly at the entrance to the compartment
and the bather can adjust the valve prior to stepping into the shower spray.
Exception: Showers of the roll in type installed in accordance with 2009 ANSI A117.1.
Add new section to read:
Shower valve location. A shower or tub/shower control valve shall be installed only where the spout and/or shower head discharges into an approved tub or shower compartment. Exception: Emergency Showers.
Add new exception to read:
Exception: Water closets installed in public restrooms for the purpose of complying with accessible fixtures as required by Section 404 fitted with the "AXS-Wingman Universal Design Water Closet Seat" having a closed front are allowed.
Discharge Add new section 50.4.6.1 to read:
Collection of Relief Valve Discharge. A means shall be provided to capture the discharge from a relief valve and convey it to the sanitary drainage system or exterior of the structure either by gravity or a pumped discharge.
Exceptions:
Replacements for existing water heaters.
Where a water sensing device wired to a normally closed solenoid valve installed in the water supply piping to the heater is placed within the water heater drain pan.
Add new Section 504.6.1.1 to read as follows:
Pumped discharge of relief valve collection. Pumps used to discharge the clear water collection of relief valves shall have an operating temperature equal to or exceeding that of the
relief valve discharge temperature and shall have a gpm rating equal to or greater than the discharge of the relief valve.
Add new exception to read:
Replacements for water heaters that did not have a pan previously installed tocode in effect at the time of the original installation.
IPC Section 504.7 Required pan
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Unless the pan is constructed of material having a flame spread index of 25 or less and a smoke-developed index of .450 or less when tested in accordance with ASTM E8.4 or UL 723.
Delete the exception in its entirety.
Add additional wording to read:
The water supply for hospital fixtures and dental chairs shall be protected against backflow with a reduced pressure principle backflow prevention assembly, an atmospheric or spill resistant vacuum breaker assembly, or an air gap. Vacuum breakers for bedpan washer hoses shall not be located less than 5 feet (1524 mm) above the floor. Vacuum breakers for hose connections in health care or laboratory areas shall be not less than 6 feet (1829 mm) above the floor.
Delete the section in its entirety and replace with:
Plumbing fixtures flushed with nonpotable water shall be identified with signage that reads as follows:
"Nonpotable water is used to flush this fixture. CAUTION: NONPOTABLE WATER - DO NOT DRINK."
In addition to the required wordage, the pictograph shown in figure
608.8.1 shall appear on the required signage.
A permanent warning sign must also be visible at all fixtures from which graywater is collected. The sign must state that:
"WATER FROM THIS FIXTURE IS REUSED. CHEMICALS, EXCRETA, PETROLEUM OILS AND HAZARDOUS MATERIALS MUST NOT BE DISPOSED DOWN THIS DRAIN."
For both types of fixtures indicated in subsections 1.2(E)(1)(b)(1)(i) and (ii), the words shall be legibly and indelibly printed on a tag or sign constructed of corrosion-resistant waterproof material or shall be indelibly printed on the fixture. The letters of the words shall be not less than 0.5 inch (12.7 mm) in height and in colors in contrast to the background on which they are applied.
Delete the section verbiage and replace with:
Nonpotable distribution piping shall be purple in color or the piping shall be installed with a purple identification tape or wrap the entire length of the piping and shall be embossed, or integrally stamped or marked, with the words: "CAUTION: NONPOTABLE WATER - DO NOT DRINK".
Add new subsection 608.17.2.1 to read:
Section 608.17.2.1 essentially nontoxic fluid conditioning chemical. When the conditioning chemical introduced is an essentially nontoxic transfer fluid the potable supplier to the boiler shall, at a minimum, be equipped with a backflow preventer with an intermediate atmospheric vent complying with ASSE 1012 or CSA B6.4.3.
Add new subsection 608.17.11 to read:
Section 608.17.11 Connection to graywater system or reclaimed water system.
The potable water system connection to a graywater system must be protected against backflow by an air gap or reduced pressure principle backflow prevention assembly.
Add exception 2:
Exception 2: Floor drains or trench drains installed in utility buildings and residential garages may be daylighted or discharged to an approved alternative disposal system when written approval has been provided from the jurisdiction having authority through CDPHE or sewer purveyor.
Delete the exception in its entirety.
Add sentence to end of IPC Section 706.3:
fixture crosses will not be required to meet the exception of IPC Section706.3
Add sentence to end of IPC Section 706.3:
fixture crosses will not be required to meet the exception of IPC Section706.3
Delete footnotes a and b from the table. (not shown)
IPC Section 708.1.3 Building drain and building sewer junction
Add new sentence at the end of the section to read:
When the cleanout is installed at the junction of the building drain and building sewer, it shall be an approved two way fitting with a single riser not to exceed .4 feet in depth or a two riser cleanout using back to back combination fittings or equal of schedule .40 material.
Add a new section to read:
Domestic dishwashing machines may be connected to a separately trapped stand pipe provided with an air break (with drain hose secured to the underside of the counter top) or air gap as shown in the illustration below. Refer to 2018 IPC .409..4 for additional waste connections. (not shown)
Delete the last sentence
Add new exception to read:
Exception: Where equipment is installed in a crawl space, a waste receptor shall be allowed with an approved backwater valve installed.
Insert 6 inches into the section so that it reads: "All open vent pipes that extend through a roof shall be terminated at least 6 inches above the roof.
Change wording to read 4 inches instead of 2 inches.
Section 903.1.3 Where an open vent pipe terminates above a sloped roof and is covered by either a roof-mounted panel (such as a solar collector or photovoltaic panel mounted over the vent opening) or a roof element (such as an architectural feature or a decorative shroud), the vent pipe shall terminate not less than 4 inches (102 mm) above the roof surface.
Delete in its entirety.
Add a new exception to read:
Exception: Fixtures other than those considered to be bathroom group fixtures, of equivalent drainage fixture units, may be included in the wet vented section provided the total number of drainage fixture units does not exceed the total number included in two bathroom groups and the fixtures not considered bathroom fixtures are valued at one drainage fixture unit or less.
Add new exception 5 to read:
Exception: 5. Trench and floor drains connected to a sand oil interceptor neednot be individually trapped provided the drain piping from the trench or floor drains is turned down after entering the interceptor so the discharge point is a minimum of .4 inches below the standing water level of the interceptor.
Add the following Exception:
Exception: Where special regulations exist by the local waste water and/or sanitation district into which the grease trap or interceptor effluent is transported and/or treated. These regulations may supersede this requirement.
Add exception to read:
When using a gravity interceptor equal to or greater than 500 gallon capacity.
Add a new sentence to the end of the section reading:
Storm water from roof drains shall not discharge over public walkways except when an approved grated trough or trench drain sized to accept the calculated discharge is installed in the walkway. The discharge shall be diverted vertically from a height not greater than 12 inches to the grate.
Exception: Secondary drains.
Modify section 1301.2.2 Exemption reading:
Nonpotable water utilized for water closet and urinal flushing application shall be filtered by a 100-micron or fine filter.
Exception: Reclaimed water sources shall not be required to comply with these requirements. Graywater treatment systems installed in accordance with Section 1302.6.1 do not need to meet additional filtration requirements.
Add new section 1301.3.1 reading:
1301.3.1. Distribution pipe labeling and marking
Nonpotable distribution piping shall comply with Section 608.8.2 as amended in Rule 1.2(E)(1)(v).
Add section new section 1301.3.2 reading:
For each room that contains graywater treatment works components, a sign thatsays "CAUTION GRAYWATER TREATMENT WORKS, DO NOT DRINK, DO NOT CONNECT TO THE POTABLE DRINKING WATER SYSTEM. NOTICE: CONTACT BUILDING MANAGEMENT BEFORE PERFORMING ANY WORK
ON THIS WATER SYSTEM" must be posted on any door providing entrance to the room.
Add new figure 1301..4
1301.4 Typical Graywater Collection System (not shown)
Add new figure 1301.5
1301.5 Typical graywater system for toilet and urinal flushing (not shown)
Add new figure 1301.6
1301.6 Typical graywater system for disbursed subsurface irrigation system (not shown)
1301.7 Typical graywater system for mulch basin subsurface irrigation (not shown)
Add section 1301.9.2 Exemption reading:
Exemption. Tanks are not required if the graywater use is comprised of only subsurface irrigation and flows into a mulch basin system, where the mulch basin volume is three times the anticipated average daily flow.
Delete the section verbiage and replace with:
The storage tank shall be equipped with an overflow pipe having a diameter not less than that shown in Table 606.5..4. The overflow pipe shall be protected from insects or vermin. The overflow drain shall not be equipped with a shutoff valve and shall discharge into the sanitary sewer either directly, or indirectly with a trap in the drain line to keep odors from escaping the tank. A cleanout shall be provided on each overflow pipe in accordance with Section 708.
Delete the text "shall discharge as required for overflow pipes and". Replace it with: shall discharge into the sanitary sewer either directly, or indirectly with a trap in the drain line to keep odors from escaping the tank
Delete in its entirety.
Delete in its entirety.
Add a sentence to the end of the section saying:
All plumbing systems utilizing nonpotable water reuse systems shall have a reduced pressure backflow preventer device installed at the
water service entrance immediately downstream of the building water service shut off valve.
Add a new sentence to the end of the section saying:
1302.5 Filtration: Graywater used for dispersed subsurface irrigation system requires a cartridge filter. The cartridge filter must be a minimum of sixty mesh located between the storage tank and the irrigation system.
Exemption. Filtration is not required for mulch basin subsurface irrigation systems.
Add a new sentence to the end of the section reading:
Graywater used for toilet and urinal flushing shall be dyed with blue or green food grade vegetable dye and be visibly distinct from potable water.
Add a new Section 1302.7.3 that reads:
1302.7.3 Overflow. Storage tank for on-site nonpotable systems must include anoverflow line without a shut off valve. The overflow line shall be connected to the sanitary sewer indirectly. The overflow line must be the same or larger diameter line than the tank influent line. The overflow line connected indirectly must be trapped to prevent the escape of gas vapors from the tank
Add a new Section 1302.7..4 that reads:
1302.7.4 Venting. Storage tank for on-site nonpotable systems must be vented. Indoor tanks must be vented to the atmosphere outside the building or connected to the plumbing vent system.
Add a new Section 1302.7.5 that reads:
1302.7.5 Tank Drains. Storage tank for on-site nonpotable systems must include a valved drain. The drain shall be indirectly connected to the sanitary sewer. The tank drainline must be the same or larger
diameter line than the tank influent line.
Change the section heading and section verbiage to read:
Section 1302.8.1 System Bypass
Delete the section verbiage and replace with:
One three-way diverter valve listed and labeled to NSF 50 or other approved device shall be installed on collection piping upstream of any graywater treatment equipment, as applicable, to divert untreated on-site reuse sources to the sanitary sewer to allow servicing and inspection of the system. Bypass valves shall be installed downstream of fixture traps and vent connections. Bypass valves shall be marked to indicate the direction of flow, connection graywater treatment works, storage tank and graywater subsurface irrigation systems.
Bypass valves shall be installed in accessible locations. Two shutoff valves shall not be installed to serve as a bypass valve. In addition to the bypass valve a series of drainage fittings shall be installed in the collection piping upstream of the bypass valve in a configuration that will allow the graywater from the plumbing fixtures to automatically flow directly into the sanitary sewer system in the event the filter or other parts of the collection system become clogged to the point of not allowing the effluent free flow through the system. The overflow line connected to the sanitary sewer shall be equipped with a backwater valve.
Delete in its entirety.
Delete in its entirety.
IRC Section R202 Definitions
Add new definition to read as follows:
Multipurpose Residential Fire Sprinkler System. A Multipurpose Residential Fire Sprinkler System includes the domestic water distribution piping and the fire sprinkler piping which shall be a part of and connect to the cold water distribution piping at any point.
Add new definitions to read:
Direct Supervision. Direct supervision means that the supervising licensed master plumber, journeyman plumber, or residential plumber is physically present at the same physical addresses listed on the permits and where the apprentice is working or no more than five minutes distance from the apprentice.
Add new definition to read as follows:
Trap drain. That portion of horizontal piping between the weir of a trap and thepoint where it intersects with its vent.
Delete the definition and replace with:
Fixture drain. That portion of a plumbing drainage system that connects the trap drain to any other drain pipe receiving the discharge from one or more plumbing fixtures.
Add new definition to read as follows:
Manufactured Housing Hookup-Sewer. That portion of drainage piping and fittings connecting a single point of drainage pipe discharge from the factory installed plumbing of a manufactured home to the sanitary sewer riser under the set home. (More than a
single connection to the home drainage piping shall be considered "plumbing" as defined in section 12-155-103, C.R.S., and subject to all provisions of Article 155 of Title 12).
Add new definition to read as follows:
Manufactured Housing Hookup-Water. That portion of piping and fittings connecting a single point of water supply from the factory installed water supply pipe of a manufactured home to the potable water riser under the set home.
Delete the definition and replace with:
Reclaimed Water. Domestic wastewater that has received secondary treatment by a domestic wastewater treatment works (centralized system or a localized system) and such additional treatment as to enable the wastewater to meet the standards for approved uses.
IRC Section P2503.5.1 Rough Plumbing
Delete the words "for piping systems other than plastic".
IRC Section P2503.6 Shower liner test
Delete in its entirety.
IRC Section P2503.7 Water supply system testing
Delete the words "for piping systems other than plastic"
IRC Section P2503.5.2 Finished plumbing
Delete 2, 2.1, and 2.2
IRC Section P2601.2 Connection to drainage system
Delete the Exception in its entirety.
IRC Section P2605.2 Thermal expansion tanks
Add new section P2605.2 to read:
P2605.2 Thermal expansion tanks. A thermal expansion tank shall be supported in accordance with the manufacturer's instructions.
Thermal expansion tanks shall not be supported by the piping that connects to such tanks.
IRC Section P2603.3 Protection against corrosion
Delete section in its entirety and replace with:
IRC P2603.3 Protection against corrosion. Piping except for, for cast iron, ductile iron, and galvanized steel shall not be placed in direct contact with steel framing members. Piping shall not be placed in direct contact with concrete or cinder walls and floors, other masonry, and corrosive soil. Where sheathing is used to prevent direct contact, the sheathing shall have a thickness of not less than
.025 inch (.6.4 mm). Where sheathing protects piping that penetrates concrete or masonry walls or floors, the sheathing shall be installed in a manner that allows movement of the piping within the sheathing.
Add new exception to read:
Exception for remodels only: Lavatory clearance from its center to any sidewall or partition may bereduced to a minimum of twelve inches.
IRC P2706.1 General (waste receptors)
Add new exception to read:
Exception: Where equipment is installed in a crawl space, a waste receptor shall be allowed with an approved backwater valve installed.
IRC Section P2708.5 Shower head location
Add new section P2708.5 to read:
P2708.5 Shower head location. Shower heads shall be so located on the sidewall of shower compartments or be arranged so the shower head does not discharge directly at the entrance to the compartment and the bather can adjust the valve prior to stepping into the shower spray.
IRC Section P2717.3 Dishwasher drain
Add new section to read:
IRC Section P2717.3 Dishwasher drain. Dishwashers may drain into a standpipe complying with Section P2706.2 (not shown). The
standpipe shall be provided with an air break (with drain hose secured to the underside of the counter top) or air gap as shown in the illustration below.
IRC Section P2801.6 Required pan
Add new exception to read:
Exception: Replacements for water heaters that did not have a pan previously installed due to code in force at the time of installation.
IRC Section P2803.6.2 Collection of Relief Valve Discharge
Add new section P2803.6.2 to read:
P2803.6.2 Collection of Relief Valve Discharge. A means shall be provided tocapture the discharge from a relief valve and convey it to the sanitary drainage system or exterior of the structure either by gravity or a pumped discharge.
Exceptions:
(1) Replacements for existing water heaters.
(2) Where a water sensing device wired to a normally closed solenoid valve installed in the water supply piping to the heater, is placed within the water heater drain pan.
IRC Section P2803.6.2.1 Pumped discharge of relief valve collection
Add new Section P2803.6.2.1 to read:
P2803.6.2.1 Pumped discharge of relief valve collection. Pumps used to discharge the clear water collection of relief valves shall have an operating temperature equal to or exceeding that of the relief valve discharge temperature and shall have a gpm rating equal to or greater than the discharge of the relief valve.
IRC Section P2901.1 Potable water required
Delete the last sentence of the section.
IRC Section P2901.1.2.1 Signage required
Delete the section in its entirety and replace with:
Plumbing fixtures flushed with nonpotable water shall be identified with signage that reads as follows:
"Nonpotable water is used to flush this fixture. CAUTION: NONPOTABLE WATER - DO NOT DRINK."
In addition to the required wordage, the pictograph shown in figure P2901.2.1 shall appear on the required signage.
Add new Section P2901.1.2..4 to read:
Graywater used for toilet and urinal flushing shall be dyed with blue or green food grade vegetable dye and be visibly distinct from potable water.
IRC Section P2901.2.2 Distribution pipe labeling and marking
Delete the section verbiage and replace with:
Nonpotable distribution piping shall be purple in color or the piping shall be installed with a purple identification tape or wrap the entire length of the piping and shall be embossed, or integrally stamped or marked, with the words: "CAUTION: NONPOTABLE WATER - DO NOT DRINK".
IRC Section P2902.5 Protection of potable water connections
Add new subsection P2902.5.1.1 to read:
Section P2902.5.1.1 Essentially nontoxic fluid conditioning chemical. When the conditioning chemical introduced is an essentially nontoxic transfer fluid the potable supplier to the boiler shall, at a minimum, be equipped with a backflow preventer with an intermediate atmospheric vent complying with ASSE 1012 or CSA B6.4.3.
IRC New Section P2902.5.6 Protection of potable water system
Add new subsection P2902.5.6 to read:
Section P2902.5.6 Connection to graywater system or reclaimed water system
The potable water system connection to a graywater system or reclaimed water system must be protected against backflow by an air gap or reduced pressure principle backflow prevention assembly.
IRC Section P2903.9.1 Service valve
Delete the words "with provision for drainage such as a bleed orfice or installation of a separate drain valve"
Delete in its entirety and replace with:
P2904.1 General. Where installed, residential fire sprinkler systems, or portions thereof, shall be in accordance with NFPA 13D or Section P290.4, which shall beconsidered equivalent to NFPA 13D. Section P290.4 shall apply to multipurpose wet-pipe sprinkler systems that do not include the use of antifreeze. A multipurpose fire sprinkler system shall supply domestic water to both fire sprinklers and plumbing fixtures. A backflow preventer shall not be required to separate the sprinkler system from the water distribution system.
IRC Section P2910 Graywater Recycling Systems
Add new Figure P2910.4 Typical Graywater Collection system. (not shown)
Add a sentence to the end of the section saying:
All plumbing systems utilizing nonpotable water reuse systems shall have a reduced pressure backflow preventer device installed at the water service entrance immediately downstream of the building water service shut off valve.
IRC Section P2910.2.2 Filtration Required Exception
Modify section Exemption to read:
P2910.2.2 Filtration Required. Nonpotable water utilized for water closet and urinal flushing application shall be filtered by a 100-micron or fine filter.
Exception: Reclaimed water sources shall not be required to comply with these requirements. Graywater treatment systems installed in accordance with Section P2911.6.1 do not need to meet additional filtration requirements.
IRC Section P2910 Graywater recycling system
Add new figure Section 2910.5 (not shown)
IRC Section P2910 Graywater recycling systems
Add New Figure Section 2910.6 (not shown)
2910.6 Typical graywater system for disbursed subsurface irrigation system (not shown)
Add new figure Section 2910.7
2910.7 Typical graywater system for mulch basin subsurface irrigation (not shown)
IRC Section 2910.9.3 Materials
Add section Exemption to read:
Exemption. Tanks are not required if the graywater use is comprised of only subsurface irrigation and flows into a mulch basin system, where the mulch basin volume is three times the anticipated average daily flow.
Delete the section in its entirety and replace with:
P2911.5.1 Filtration. Graywater used for dispersed subsurface irrigation system requires a cartridge filter. The cartridge filter must be a minimum of sixty mesh located between the storage tank and the irrigation system. If a pump is being used to pressurize the graywater distribution system the filter must be located after the pump. Filters shall be accessible for inspection and maintenance. Filters shall utilize a pressure gauge or other approved method to provide indication when a filter requires servicing or replacement. Filters shall be installed with shutoff valves immediately upstream and downstream to allow for isolation during maintenance.
Exemption. Filtration is not required for mulch basin subsurface irrigation systems.
IRC Section P2911.7.6 Overflow
Add a new Section P2911.7.6 that reads:
P2911.7.6 Overflow. Storage tank for on-site nonpotable systems must include an overflow line without a shut off valve. The overflow line shall be connected to the sanitary sewer indirectly. The overflow line must be the same or larger diameter line than the tank influent line. The overflow line connected indirectly must be trapped to prevent the escape of gas vapors from the tank.
IRC Section P2911.7..4 Venting
Add a new Section P2911.7..4 that reads:
P2911.7.4 Venting. Storage tank for on-site nonpotable systems must be vented to the atmosphere or connected to the plumbing system vent piping.
IRC Section P2911.7.5 Draining of tanks
Add a new Section P2911.7.5 that reads:
P2911.7.5 Draining of tanks. Storage tank for on-site nonpotable systems must include a valved drain. The drain line shall be connected to the sanitary sewer either directly or indirectly. The tank drain line must be the same or larger diameter line than the tank influent line.
IRC Section P2911.8.1 Bypass valve Section
Delete the section verbiage and replace with:
One three-way diverter valve listed and labeled to NSF 50 or other approved device shall be installed on collection piping upstream of any graywater treatment equipment, as applicable, to divert untreated on-site reuse sources to the sanitary sewer to allow servicing and inspection of the system. Bypass valves shall be installed downstream of fixture traps and vent connections. Bypass valves shall be marked to indicate the direction of flow, connection to graywater treatment works, storage tank and graywater subsurface irrigation system.
Bypass valves shall be installed in accessible locations. Two shutoff valves shall not be installed to serve as a bypass valve. In addition to the bypass valve a series of drainage fittings shall be installed in the collection piping upstream of the bypass valve in a configuration that will allow the graywater from the plumbing fixtures to automatically flow directly into the sanitary sewer system in the event the filter or other parts of the collection system become clogged to the point of not allowing the effluent free flow through the system. The overflow line connected to the sanitary sewer shall be equipped with a backwater valve.
Add exception 1:
Exemption 1: Floor drains or trench drains may be allowed to be daylighted or discharged to an approved alternative disposal system when written approval has been provided from the jurisdiction having authority.
IRC Section P3003.9.2 Solvent cementing
Delete exception in its entirety.
IRC Table P3005.1 Fittings for changes in directions
Delete footnotes a and b from the table. (not shown)
IRC Section P3005.2.3 Building drain and building sewer junction
Add new sentence at the end of the section to read:
When the cleanout is installed at the junction of the building drain and building sewer, It shall be an approved two way fitting with a single riser not to exceed 4 feet in depth or a two riser cleanout using back to back combination fittings of schedule 40 material.
IRC Section P3008.1 Where required (backwater valves)
Delete section in its entirety and replace with:
Backwater valves shall be installed where waste receptors are located in a crawl space for the purpose of receiving condensate discharge from equipment located in that crawl space. Refer to new exception for 802.4
IRC Section P3009 Subsurface landscape irrigation systems
Delete in its entirety.
IRC Section P3103.1.3 Protected vent terminal
Change wording to read 4 inches instead of 2 inches.
Section P3103.1.3 Where an open vent pipe terminates above a sloped roof and is covered by either a roof-mounted panel (such as a solar collector or photovoltaic panel mounted over the vent opening) or a roof element (such as an architectural feature or a decorative shroud), the vent pipe shall terminate not less than 4 inches (102 mm) above the roof surface.
IRC Section P3103.2 Frost closure
Delete in its entirety.
IRC Section P3108.1 Horizontal wet vent permitted
Add a new exception to read:
Exception: Fixtures other than those considered to be bathroom group fixtures, of equivalent drainage fixture units, may be included in the wet vented section provided the total number of drainage fixture units does not exceed the total number included in two bathroom groups and the fixtures not considered bathroom fixtures are valued at one drainage fixture unit or less.
Colorado Fuel Gas Code
The Board hereby adopts and incorporates by reference, with certain additions, revisions, and deletions, the following chapters, sections, and appendices of the International Fuel Gas Code ("IFGC") and the IRC. These Rules, together with the following incorporated provisions, shall beknown as the Colorado Fuel Gas Code. The Colorado Fuel Gas Code sets forth the minimum standards governing the inspection, installation, alteration, and repair of fuel gas piping and systems throughout Colorado. The Colorado Fuel Gas Code does not include any later amendments to or editions of the IFGC and IRC provisions listed below.
Chapter 1 Section 101, 102, 105, 107, Chapters 2-8 save and except Sections 412 and 413, Appendices A-C of the IFGC, 2021 edition, promulgated by the International Code Council, 1st printing (August 2020).
Chapter 1, Section R101, R102; Chapter 2; Chapter 24, Sections G2411-G2422, and G2401.1-Table G2428.3(4) and G2448 of the IRC, 2021 edition, promulgated by the International Code Council, 1st printing (January 2021).
Delete in its entirety.
IFGC Section 101.2.2 Piping Systems
Delete the words "and maintenance" from the end of the last sentences.
IFGC Section 101.2..4 Systems, appliances and equipment outside the scope
Delete 13 from the list. (not shown)
IFGC Section 303.3. Prohibited locations
Delete the words "toilet rooms" from the section.
Add a new exception to read:
Exception: Conductive Jacketed Corrugated Stainless Steel Tubing
(CSST) with arc resistant jacketing complying with Listing LC102.4 from the ICC Evaluation Service shall be installed per the manufacturer's installation instructions and the listing's requirements.
IFGC Section 403.10.5 Welded joints
Add new section 403.10.5 to read:
403.10.5 Welded Joints. Welded joints shall be performed by a person holding avalid certificate of competency based on the requirements of the ANSI/ASME Boiler and Pressure Vessel Code, Section IX, Brazing and Welding Qualifications. Welded joints shall comply with ASTM 139.
IFGC Section 404.14.1 Conduit with one end terminating outdoors
Delete in its entirety.
IFGC Section 405.3 Plastic Pipe
New addition to read:
3. The radius of the inner curve of such bends shall be not less than 25 times the inside diameter of the pipe or in accordance with the manufacturer's instructions.
IFGC Section 406.1 Inspection, Testing, and Purging
Add a new sentence to the end of the section reading:
Inspection and pressure testing shall apply to all temporary installations connected to a primary or temporary fuel gas source, natural or LP gas, for the purpose of supplying temporary heat.
IFGC Section 409.5.3 Located at manifold
Delete in its entirety.
IFGC 409.6 Shutoff valve for laboratories
Add new subsection 409.6.1 to read:
409.6.1 Electric Solenoid Valve. A remotely located electric solenoid emergency shutoff valve may be used for compliance to Section 409.6, when all the following requirements are met.
1) The emergency control shutoff "panic button" shall be readily accessible, located within the laboratory space served, adjacent to the egress door from the space and shall be identified by approved signage stating "Gas Shutoff".
2) The gas solenoid valve shall be a "normally closed" type valve with a manual reset.
IFGC Section 503..4.1 Plastic Piping
Add new sentence to the end of the section saying:
Where installed as an exhaust vent for a gas fired water heater, the new plastic pipe shall be tested with 5 psi maximum air pressure at
the time of inspection prior to being connected to the water heater.
IRC Section G2.41.4.10.5 Welded joints
Add new section G2.41.4.10.5 Welded joints to read:
Welded joints. Welded joints shall be performed by a person holding a valid certificate of competency based on the requirements of the ANSI/ASME Boiler and Pressure Vessel Code, Section IX, Brazing and Welding Qualifications.
Welded joints shall comply with ASTM 139.
IRC Section G2.411.1 Gas Pipe Bonding
Add a new exception to read:
Exception: Conductive Jacketed Corrugated Stainless Steel Tubing (CSST) with arc resistant jacketing complying with Listing LC102.4 from the ICC Evaluation Service shall be installed per the manufacturer's installation instructions and the listing's requirements.
IRC Section G2420.5.3 (Shutoffs) Located at manifolds
Delete in its entirety.
IRC G2.427..4.1 Plastic Piping
Add new sentence to the end of the section saying:
Where installed as an exhaust vent for a gas fired water heater, the new plastic pipe shall be tested with 5 psi maximum air pressure at the time of inspection prior to being connected to the water heater.