- A. 40 CFR 141, Subpart L (40 CFR 141.130 through 141.135), is incorporated by reference as of the date specified in R18-4-102, subject to the modifications specified in this Section; this incorporation does not include any later amendments or editions.
- B. 40 CFR 141.131 is not incorporated by reference.
C. In order to demonstrate compliance with the requirements of this Chapter:
- 1. Public water systems shall use analytical methods approved by EPA and the Arizona Department of Health Services for monitoring under this Chapter; and
- 2. Analyses of drinking water samples shall be conducted by laboratories that have been certified by EPA or the Arizona Department of Health Services.
- D. A party approved by the Department shall measure daily chlorite samples at the entrance to the distribution system.
- E. A public water system may measure residual disinfectant concentrations for chlorine, chloramines, and chlorine dioxide by using N,N-diethyl-p-phenylenediamine (DPD) colorimetric test kits. A party approved by the Department shall measure residual disinfectant concentration.
Historical Note
Former Section R9-20-519 repealed, new Section R9-20-519 adopted effective November 1, 1979 (Supp. 79-6). Former Section R9-20-519 amended, renumbered as Section R9-20-514, then renumbered as Section R18-4-114 effective October 23, 1987 (Supp. 87-4). R18-4-114 recodified to R18-5-114 (Supp. 95-2). New Section adopted effective April 28, 1995 (Supp. 95-2). Section R18-4-114 renumbered to R18-4-202; new Section made by final rulemaking at 14 A.A.R. 2978, effective August 30, 2008 (Supp. 08-3).