ARM 36.21.638
ARM 36.21.638. LOCATION OF WELLS
Cite as Mont. Admin. R. 36.21.638
(1) At a minimum, unless contamination risk is evident, water wells shall not be located within:
(a) 50 feet of septic tanks, and underground storage tanks and associated lines; or
(b) 100 feet of drainfields, seepage pits or cesspools, or other site treatment systems.
(2) Water wells should not be located within:
(a) 10 feet of property lines unless properly protected by easement or agreement;
(b) 10 feet of sewer lines with permanent watertight joints; or
(c) 50 feet of other sewer lines.
(3) CONTRACTORS should contact local flood plain administrators for rules pertaining to wells in flood plain areas.