New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Ws - Division of Water
Chapter Env-Ws 300 - NEW HAMPSHIRE DRINKING WATER RULES
Part Env-Ws 380 - FILTRATION, DISINFECTION, TREATMENT PLANT AND WASTE RECYCLING
Section Env-Ws 380.13 - Analytical Requirements

Universal Citation: NH Admin Rules Env-Ws 380.13

Current through Register No. 13, March 27, 2025

(a) The analytical methods specified in 40 CFR 141.74 shall be used to comply with the requirements of Env-Ws 380 for the following parameters:

(1) Fecal coliform concentration;

(2) Total coliform concentration;

(3) Heterotrophic plate count;

(4) Residual disinfectant concentration;

(5) Turbidity;

(6) Temperature; and

(7) pH.

(b) Operators certified under Env-Ws 367 shall conduct measurements for pH, temperature, turbidity, and residual disinfectant concentration.

(c) Measurements for total coliforms, fecal coliforms, and HPC shall be conducted by a laboratory accredited to do such analysis by the department under Env-C 300.

(d) Until laboratory accreditation criteria are developed for the analysis of HPC and fecal coliforms, any laboratory certified for total coliform analysis under Env-C 300 shall be deemed certified for HPC and fecal coliform analysis.

#5098, eff 3-18-91, EXPIRED 3-18-97

New. #6521, eff 6-4-97 (See Revision Note at chapter heading for Env-Ws 300); ss by #8352, eff 5-14-05 (formerly Env-Ws 380.21 )

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