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 381.08 - Corrosion Control Treatment Steps and Deadlines for Small and Medium Size Systems

(a) An owner of a small or medium-size system, except as provided in Env-Ws 381.06(a), shall complete the corrosion control treatment steps described in Env-Ws 381.09 through Env-Ws 381.10, Env-Ws 381.15 through Env-Ws 381.21, and Env-Ws 381.22 through Env-Ws 381.27 by adhering to the following:

(b) Within 12 months after a system exceeds the lead or copper action level, the department shall require the system to perform corrosion control studies as specified in Env-Ws 381.09(c) if the recommendation does not provide the corrosion control necessary to meet the lead or copper action levels specified in Env-Ws 381.03.

(c) If the department does not require the system to perform the studies described in (b) above, the department shall specify optimal corrosion control treatment as specified in Env-Ws 381.10(a) through (c) within the following time frames :

(d) If the department requires a system owner to perform corrosion control studies under (b) above, the system shall complete the studies as described in Env-Ws 381.09(d) through (i) within 18 months after the department requires that such studies be conducted.

(e) If the system owner has performed corrosion control studies under (b) above, the department shall specify optimal corrosion control treatment as described in Env-Ws 381.10(a) through (c) within 6 months after completion of the corrosion control studies.

(f) The system owner shall install optimal corrosion control treatment as described in Env-Ws 381.10(d) within 24 months after the department specifies such treatment.

(g) The system owner shall complete follow-up sampling as described in Env-Ws 381.19 and Env-Ws 381.25 within 36 months after the department specifies optimal corrosion control treatment.

(h) The department shall review the system's installation of treatment and specify optimal water quality control parameters as described in Env-Ws 381.10(e) and (f) within 6 months after completion of (g) above.

(i) The system owner shall operate in compliance with the department specified optimal water quality control parameters as described in Env-Ws 381.10(g) and continue to conduct tap sampling as described in Env-Ws 381.20 and Env-Ws 381.26.