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 381 - CORROSION CONTROL TREATMENT, LEAD AND COPPER ACTION LEVELS
Section Env-Ws 381.18 - Lead and Copper Monitoring
Universal Citation: NH Admin Rules Env-Ws 381.18
Current through Register No. 13, March 27, 2025
(a) A large system owner shall monitor during 2 consecutive 6 month periods.
(b) A small or medium-size system owner shall monitor during each 6-month monitoring period until:
(1) The system exceeds the lead or copper
action level and is therefore required to implement the corrosion control
treatment requirements under
Env-Ws
381.05 through
Env-Ws
381.08, in which case the system shall continue
monitoring in accordance with
Env-Ws
381.19; or
(2) The system meets the lead or copper
action levels during 2 consecutive 6-month monitoring periods, in which case
the system may reduce monitoring in accordance with
Env-Ws
381.21(a) through (h).
(c) As of January 1, 1992, the first 6-month monitoring period for any size public water system shall begin on the dates specified in 40 CFR 141.86(d)(1).
(See Revision Note at chapter heading for Env-Ws 300) #6521, eff 6-4-97, ss by #7734, eff 8-2-02; amd by #9598, eff 11-21-09
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