Section Env-Wq 704.19 - Protection of Water Supplies(a) There shall be no physical connection between a public or private potable water supply system and any sewerage such that sewage or polluted water could pass into the potable supply. No water pipe shall pass through or come in contact with any part of any sewer or sewer manhole.(b) No sewer shall be located within the applicable well protective radii established in Env-Dw 300 for any public water supply well or within 75 feet of any private water supply well.(c) Sewers shall be located at least 10 feet horizontally from any existing or proposed water main.(d) A deviation from the separation requirements of (b) or (c), above, shall be allowed where necessary to avoid conflict with subsurface structures, utility chambers, and building foundations, provided that the sewer is constructed with force main construction materials that meet the requirements in Env-Wq 704.08.(e) Whenever sewers must cross water mains, the sewer shall be constructed as follows:(1) Vertical separation of the sewer and water main shall be not less than 18 inches, with water above sewer; and(2) Sewer pipe joints shall be located at least 6 feet horizontally from the water main.N.H. Code Admin. R. Env-Wq 704.19
Adopted byVolume XXXIV Number 46, Filed November 13, 2014, Proposed by #10693, Effective 10/15/2014, Expires10/15/2024.