Section Env-Ws 381.18 - Lead and Copper Monitoring(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).N.H. Admin. Code § Env-Ws 381.18
(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