New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Dw - Drinking Water Programs
Chapter Env-Dw 400 - PUBLIC WATER SYSTEM CLASSIFICATION AND DESIGN
Part Env-Dw 405 - DESIGN STANDARDS FOR SMALL COMMUNITY WATER SYSTEMS
Section Env-Dw 405.23 - Well Appurtenances and Pump Installation

(a) All small community water systems and those NTNC water systems important to public health as specified in Env-Dw 405.02(g) shall comply with this section.

(b) No well installed after June 4, 1997 shall be placed inside a pumphouse or building being served by the water system.

(c) Well casings shall project at least one foot above finished grade.

(d) For bedrock wells installed prior to June 4, 1997 that are inside a pumphouse where the floor is below finished grade, the well casing shall extend above the finished floor at least 2 feet.

(e) A tight seal shall be provided around all entry ports into the well. Provisions shall be made to allow the removal of well pump for repair.

(f) All well sources shall be capable of being separately sampled for water quality before entering storage tank(s).

(g) Wells shall have an appropriately-sized air tube or alternative provisions for electronic drawdown probes permanently installed in the well so as to allow determination of the static and drawdown water levels. Wells existing as of November 1, 2005 shall conform with this requirement when the well pump is replaced or when well pump repair work is next done.