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 381.26 - Monitoring Water Quality Parameters After the Department Specifies Parameter Values for Optimal Corrosion Control

(a) After the department specifies the values for applicable water quality control parameters reflecting optimal corrosion control treatment under Env-Ws 381.10(e) and (f), a large system owner shall measure the applicable water quality control parameters in accordance with this section and determine compliance with the requirements of Env-Ws 381.10(g) through (i) every 6 months, with the first 6-month period to begin on the date the department specified the range of optimal values under Env-Ws 381.10(e) and (f).

(b) The owner of a small or medium-sized system shall conduct such monitoring during each 6-month period specified in Env-Ws 381.20 in which the system exceeds the lead or copper action level.

(c) For a small and medium-sized system that is subject to reduced monitoring frequency specified in Env-Ws 381.21 at the time of the action level exceedance, the end of the applicable 6-month period under this section shall coincide with the end of the applicable monitoring period under Env-Ws 381.21.

(d) Compliance with department-determined optimal water quality parameter values shall be determined as specified under Env-Ws 381.10(i) through (l).