NAC445A.458. Conduct of analysis.

     1. Except as otherwise provided in this section, each analysis required by NAC 445A.4525 to 445A.457, inclusive, must be performed by a laboratory certified pursuant to NAC 445A.542 to 445A.54296, inclusive.

     2. Turbidity measurements may be made by a laboratory certified pursuant to NAC 445A.542 to 445A.54296, inclusive, or by public water system personnel utilizing an instrument capable of meeting the requirements of 40 C.F.R. § 141.74(a)(1), as adopted by reference pursuant to NAC 445A.4525.

     3. Chlorine residual measurements to comply with 40 C.F.R. §§ 141.72 and 141.74, as adopted by reference in NAC 445A.4525, must be made by public water system personnel utilizing an instrument and methods capable of meeting the requirements of 40 C.F.R. § 141.74(a)(2), as adopted by reference in NAC 445A.4525.

     4. Chlorine, chloramines or chlorine dioxide residual measurements to comply with the maximum residual disinfectant level must be made by public water system personnel using an instrument and methods capable of meeting the requirements of 40 C.F.R. § 141.131(c), as adopted by reference in NAC 445A.4525.

     5. Temperature and pH measurements must be made by the public water system utilizing an instrument and methods capable of meeting the requirements of 40 C.F.R. § 141.23(k)(1), as adopted by reference in NAC 445A.4525.

     6. Public water systems may direct the laboratory which analyzes water samples to submit the results of the sample to the Division or the appropriate district board of health.

     [Bd. of Health, Water Quality Standards Art. 5, eff. 12-14-77]—(NAC A 3-22-89; 5-23-90; 9-6-96; R048-99, 9-27-99; R203-99, 8-1-2001; R088-00, 8-3-2001; A by Environmental Comm’n by R126-05, 10-31-2005; R194-08, 10-27-2009)