WSR 07-15-080



[ Filed July 17, 2007, 3:41 p.m. ]

Original Notice.

Preproposal statement of inquiry was filed as WSR 07-09-098.

Title of Rule and Other Identifying Information: Amendment of chapter 51-56 WAC, further amendment of the 2006 Edition of the Uniform Plumbing Code (UPC).

Hearing Location(s): Spokane City Council Chambers, West 808 Spokane Falls Boulevard, Spokane, WA, on September 14, 2007, at 10:00 a.m.; and at the Tukwila Community Center, 12424 42nd Avenue South, Tukwila, WA, on October 12, 2007, at 10:00 a.m.

Date of Intended Adoption: November 9, 2007.

Submit Written Comments to: John Neff, Council Chair, P.O. Box 42525, Olympia, WA 98504-2525, e-mail, fax (360) 586-9383, by October 12, 2006 [2007].

Assistance for Persons with Disabilities: Contact Sue Mathers by August 31, 2007, TTY (360) 586-0772 or (360) 725-2966.

Purpose of the Proposal and Its Anticipated Effects, Including Any Changes in Existing Rules: The proposal would amend sections 411 and 704 to better align the plumbing code with the health code requirements for commercial kitchen drainage.

Reasons Supporting Proposal: RCW 19.27.031 and 19.27.074.

Statutory Authority for Adoption: RCW 19.27.031 and 19.27.074.

Statute Being Implemented: Chapters 19.27 and 34.05 RCW.

Rule is not necessitated by federal law, federal or state court decision.

Agency Comments or Recommendations, if any, as to Statutory Language, Implementation, Enforcement, and Fiscal Matters: The council is seeking comments on the issues proposed in the rules below.

Name of Proponent: Washington state building code council, governmental.

Name of Agency Personnel Responsible for Drafting and Implementation: Krista Braaksma, P.O. Box 42525, Olympia, WA 98504-2525, (360) 725-2964; and Enforcement: Local jurisdictions.

No small business economic impact statement has been prepared under chapter 19.85 RCW. No disproportionate impact on small business was identified. This rule will modify the adoption of model codes to stay current with national standards for the benefit of industry and Washington state interests. New state amendments clarify and simplify the code.

A cost-benefit analysis is not required under RCW 34.05.328. The state building code council is not listed in this section as one of the agencies required to comply with this statute.

June 8, 2007

John P. Neff

Council Chair


AMENDATORY SECTION(Amending WSR 07-01-094, filed 12/19/06, effective 7/1/07)

WAC 51-56-0400   Chapter 4 -- Plumbing fixtures and fixture fittings.  

402.0 Water-Conserving Fixtures and Fittings.

The purpose of this section shall be to implement water conservation performance standards in accordance with RCW 19.27.170.

402.2 Application.
This section shall apply to all new construction and all remodeling involving replacement of plumbing fixtures and fittings in all residential, hotel, motel, school, industrial, commercial use, or other occupancies determined by the council to use significant quantities of water. Plumbing fixtures, fittings and appurtenances shall conform to the standards specified in this section and shall be provided with an adequate supply of potable water to flush and keep the fixtures in a clean and sanitary condition without danger of backflow or cross-connection.

402.3 Water Efficiency Standards.

Standards for Vitreous China Plumbing Fixtures.

The following standards shall be adopted as plumbing materials, performance standards, and labeling standards for water closets and urinals. Water closets and urinals shall meet either the ANSI/ASME standards or the CSA standard.

ANSI/ASME A112.19.2M-1998 Vitreous China Plumbing Fixtures
ANSI/ASME A112.19.6-1995 Hydraulic Requirements for Water Closets and Urinals
CSA B45 CSA Standards on Plumbing Fixtures

402.3.1.2 The maximum water use allowed in gallons per flush (gpf) or liters per flush (lpf) for any of the following water closets shall be the following:

Tank-type toilets 1.6 gpf/6.0 lpf
Flushometer-valve toilets 1.6 gpf/6.0 lpf
Flushometer-tank toilets 1.6 gpf/6.0 lpf
Electromechanical hydraulic toilets 1.6 gpf/6.0 lpf

EXCEPTIONS: 1. Water closets located in day care centers, intended for use by young children may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.
2. Water closets with bed pan washers may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.
3. Blow out bowls, as defined in ANSI/ASME A112.19.2M, Section may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.

402.3.1.3 The maximum water use allowed for any urinal shall be 1.0 gallons per flush or 3.78 liters per flush.

No urinal or water closet that operates on a continuous flow or continuous flush basis shall be permitted.

This section does not apply to fixtures installed before the effective date of this Section, that are removed and relocated to another room or area of the same building after the effective date of this Section.

Standards for Plumbing Fixture Fittings.

The following standards are adopted as plumbing material, performance requirements, and labeling standards for plumbing fixture fittings. Faucets, aerators, and shower heads shall meet either the ANSI/ASME standard or the CSA standard.

ANSI/ASME A112.18.1M-1996 Plumbing Fixture Fittings
CSA B125 Plumbing Fittings

402.3.2.2 The maximum water use allowed for any shower head is 2.5 gallons per minute or 9.5 liters per minute.

EXCEPTION: Emergency use showers shall be exempt from the maximum water usage rates.

402.3.2.3 The maximum water use allowed in gallons per minute (gpm) or liters per minute (lpm) for any of the following faucets and replacement aerators is the following:

Lavatory faucets 2.5 gpm/9.5 lpm
Kitchen faucets 2.5 gpm/9.5 lpm
Replacement aerators 2.5 gpm/9.5 lpm
Public lavatory faucets other than metering 0.5 gpm/1.9 lpm

402.4 Metering Valves. Lavatory faucets located in restrooms intended for use by the general public shall be equipped with a metering valve designed to close by spring or water pressure when left unattended (self-closing).

EXCEPTIONS: 1. Where designed and installed for use by persons with a disability.
2. Where installed in day care centers, for use primarily by children under 6 years of age.

402.5 Implementation.

The standards for water efficiency and labeling contained within Section 402.3 shall be in effect as of July 1, 1993, as provided in RCW 19.27.170 and amended July 1, 1998.

No individual, public or private corporation, firm, political subdivision, government agency, or other legal entity, may, for purposes of use in the state of Washington, distribute, sell, offer for sale, import, install, or approve for installation any plumbing fixtures or fittings unless the fixtures or fittings meet the standards as provided for in this Section.

Section 402.6 is not adopted.

411.2 Location of Floor Drains. Floor drains shall be installed in the following areas:

Toilet rooms containing two (2) or more water closets or a combination of one (1) water closet and one (1) urinal, except in a dwelling unit. The floor shall slope toward the floor drains.

Commercial kitchens as required in Section 704.3.

Laundry rooms in commercial buildings and common laundry facilities in multifamily dwelling buildings.

412.0 Minimum Number of Required Fixtures. For minimum number of plumbing fixtures required, see Building Code chapter 29 and Table 2902.1.

Sections 412.1 through 412.7 and Table 4-1 are not adopted.

[Statutory Authority: RCW 19.27.190, 19.27.020 and chapters 19.27 and 34.05 RCW. 07-01-094, 51-56-0400, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-110, 51-56-0400, filed 12/17/03, effective 7/1/04; 02-01-114, 51-56-0400, filed 12/18/01, effective 7/1/02.]

AMENDATORY SECTION(Amending WSR 07-01-094, filed 12/19/06, effective 7/1/07)

WAC 51-56-0700   Chapter 7 -- Sanitary drainage.  

701.1.2 ABS and PVC DWV piping installations shall be installed in accordance with IS 5 and IS 9. Except for individual single family dwelling units, materials exposed within ducts or plenums shall have a flame-spread index of not more than 25 and a smoke developed index of not more than 50, when tested in accordance with the Test for Surface-Burning Characteristics of the Building Materials (See the Building Code standards based on ASTM E-84 and ANSI/UL 723).

704.3 Except where specifically required to be connected indirectly to the drainage system, or when first approved by the authority having jurisdiction, all plumbing fixtures, drains, appurtenances, and appliances shall be directly connected to the drainage system of the building or premises. Where other fixtures, appliances and appurtenances are directly connected to the drainage system, a floor drain or floor sink shall be provided adjacent to the fixture, and the fixture shall be connected on the sewer side of the floor drain trap, provided that no other drainage line is connected between the floor drain waste connection to the fixture drain. The fixture and floor drain shall be trapped and vented as required by this code.

710.3 The minimum size of any pump or any discharge pipe from a sump having a water closet connected thereto shall be not less than two (2) inches (52 mm).

Sections 710.3.1 through 710.3.3 are not adopted.


Part II Building Sewers.
Delete all of Part II (Sections 713 through 723, and Tables 7-7 and 7-8).

[Statutory Authority: RCW 19.27.190, 19.27.020 and chapters 19.27 and 34.05 RCW. 07-01-094, 51-56-0700, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031, 19.27.074. 02-01-114, 51-56-0700, filed 12/18/01, effective 7/1/02.]

Washington State Code Reviser's Office