Section We 602.21 - Wells Drilled in Bedrock: Casing Function and Materials(a) A well casing for a bedrock well shall be made of a material and weight appropriate to assure adequate performance of the functions for which casing is used.(b) A well casing for a bedrock well shall:(1) Provide access for withdrawal of ground water;(2) Prevent intrusion of contaminants from the ground surface or fromunconsolidated surficial deposits into the well;(3) Prevent entrance of soil particles into the well;(4) Provide a reference for locating the well;(5) Not be made of or contain materials that are a source of pollution;(6) If made of steel, have a minimum wall thickness of 0.23 inches; and(7) If made of plastic, be Schedule 40 or better and National Sanitation Foundation approved including but not limited to Polyvinyl chloride (PVC), Chlorinated polyvinyl chloride (CPVC), or Acrylonitrile butadiene styrene (ABS).N.H. Admin. Code § We 602.21
Derived From Volume XXXVII Number 2, Filed January 12, 2017, Proposed by #12083, Effective 3/1/2017, Expires 3/1/2027.