Section ENV.06.12 — Best Management Practices For Wellhead Protection

The following BMPs apply in WHPAs on the Reservation to prevent or minimize groundwater contamination through wells. These BMPs shall be followed, unless they are superseded by more stringent requirements under this Ordinance or other tribal laws.

(a) Maintain vegetation 20 feet around well casing unless surface is impermeable and drains away from well.

(b) Prevent contaminants of any kind from entering the well directly and the soil in the vicinity of the well.

(c) Maintain the casing and well cap in good condition and ensure that the well has adequate backflow protection.

(d) Locate livestock pastures, feeding operations and waste storage downslope and far enough from wells to prevent leachate from reaching groundwater.

(e) Maintain a distance of at least 150 feet from wells when mixing pesticides, fertilizers or other substances that could contaminate groundwater.

(f) Reduce fertilizer use and limit the use of pesticides.