Section 12-K704. WATER TREATMENT DEVICES AND EQUIPMENT

 

Strike Section 704.1.4 of the International Green Construction Code in its entirety and insert new Section 704.1.4 in the Green Construction Code in its place to read as follows:

 

704.1.4 Efficiency and listing.  Water softeners that regenerate in place, that are connected to the water system they serve by piping not exceeding 1 ¼ inches (31.8 mm) in diameter, or that have a volume of 3 cubic feet (0.085 m3) or more of cation exchange media shall have a rated salt efficiency of not less than 4,000 grains of total hardness exchange per pound of salt (571 g of total hardness exchange per kg of salt), based on sodium chloride equivalency and shall be listed and labeled in accordance with NSF 44.  All other water softeners shall have a rated salt efficiency of not less than 3,000 grains of total hardness exchange per pound of salt (429 g of total hardness exchange per kg of salt), based on sodium chloride equivalency.

 

Strike Section 704.2 of the International Green Construction Code in its entirety and insert new Section 704.2 in the Green Construction Code in its place to read as follows:

 

704.2 Reverse osmosis water treatment systems.  Point-of-use reverse osmosis treatment systems shall be listed and labeled in accordance with NSF 58.  Point-of-use reverse osmosis systems shall be equipped with an automatic shutoff valve that prevents the production of reject water when there is no demand for treated water.

 

Strike Section 704.3 of the International Green Construction Code in its entirety and insert new Section 704.3 in the Green Construction Code in its place to read as follows:

 

704.3 Onsite reclaimed water treatment systems.  Onsite reclaimed water treatment systems shall be listed and labeled to NSF 350. These systems shall include gray water, rainwater, and other nonpotable water reuse treatment systems and waste water treatment systems used to produce nonpotable water for water closet and urinal flushing, surface irrigation and similar applications.

 

 

authority

Section 10 of the Construction Codes Approval and Amendments Act of 1986 (Act), effective March 21, 1987 (D.C. Law 6-216; D.C. Official Code § 6-1409 (2012 Repl.)) and Mayor’s Order 2009-22, dated February 25, 2009, as amended.

source

Final Rulemaking published at 61 DCR 3356 (March 28, 2014 – Part 2); as corrected by Errata Notice published at 61 DCR 5246 (May 23, 2014).

EditorNote

The District of Columbia Green Construction Code (2013) , referred to as the “Green Construction Code,” consists of the 2012 edition of the International Green Construction Code published by the International Code Council (ICC), as amended by the District of Columbia Green Construction Code Supplement (2013)(12 DCMR K). The International Green Construction Code is copyrighted by the International Code Council and therefore is not republished here. However, a copy of the text may be obtained at:http://publicecodes.cyberregs.com/icod/igcc/2012/index.htm?bu=IC-P-2012-000023&bu2=IC-P-2012-000019.