1. (a) Direct additives for water treatment may be used in a public water system only if they are certified for that application in accordance with NSF/ANSI Standard 60: Drinking Water Treatment Chemicals - Health Effects, adopted by reference in 18 AAC 80.010(b).

2. (b) Only the following materials may be used in contact with drinking water in a public water system:

   1. (1) material that is certified for the particular drinking water contact application, in accordance with the following:

      1. (A) NSF/ANSI Standard 53: Drinking Water Treatment Units - Health Effects, adopted by reference in 18 AAC 80.010(b);
      2. (B) NSF/ANSI Standard 61: Drinking Water System Components - Health Effects, including the Addendum to NSF/ANSI Standard 61, both adopted by reference in 18 AAC 80.010(b);
      3. (C) in addition to (A) and (B) of this paragraph, if needed for material that contains lead, NSF/ANSI Standard 372: Drinking Water System Components - Lead Content, adopted by reference in 18 AAC 80.010(b);
   2. (2) material that, for the particular drinking water contact application, has a certification by NSF International (NSF), Underwriters Laboratories, Inc. (UL), the Water Quality Association (WQA), CSA Group, the International Association of Plumbing and Mechanical Officials (IAPMO), or other entity accredited by ANSI to certify products to NSF standards for drinking water contact applications;

   3. (3) material that the department approves for the particular drinking water contact application on a case-by-case basis, based on the department's determination that the public health will be adequately protected, and if

      1. (A) material

         1. (i) with a certification under (b)(1) or (2) of this section is unavailable;
         2. (ii) with a certification under (b)(1) or (2) of this section is not certified for the particular application;
         3. (iii) with a certification under (b)(1) or (2) of this section is not appropriate for the particular application because of climactic or other unique conditions at the point of application;
         4. (iv) with a certification by an entity other than an entity accredited by ANSI meets a standard equivalent to the comparable NSF/ANSI standard listed in (b)(1) or (2) of this section; or
         5. (v) without an accredited third-party certification has credible documentation, by the manufacturer of the material, showing that the material complies with criteria equivalent to the comparable NSF/ANSI standard listed in (b)(1) or (2) of this section for the particular drinking water contact application; and
      2. (B) the person seeking approval of alternate material submits documentation the department considers adequate to make a determination on the suitability of the material for contact with drinking water in the particular application; if this documentation includes the weighted average lead content of a pipe, pipe fitting, plumbing fitting, or fixture, the weighted average lead content must be calculated using the formula set out in 18 AAC 80.500(c)(2).

(Eff. 10/1/99, Register 151; am 1/11/2006, Register 177; am 11/9/2006, Register 180; am 12/13/2014, Register 212; am 12/26/2014 Register 212; am 5/3/2019, Register 230)

Authority: AS 46.03.020, AS 46.03.050, AS 46.03.710, AS 46.03.720