037-3 Wyo. Code R. §§ 3-1 - Water Well Siting

(a) General Considerations.

(i) All wells shall be sited and constructed in such a manner that the well does not act as a conduit for the transmission of contaminants from either above or below ground to the ground water resource. All restriction and setback distances contained in this section are intended for production wells and do not necessarily apply (but does not constitute exemption) to choice of location for monitor wells, test wells, dewatering wells, recovery wells, or oil and/or gas wells which produce by-product water.

(b) Relation to Land Surface.

(i) Water wells shall be located such that there is adequate surface drainage away from the well and situated such that the well is easily accessed for repairs, maintenance, and inspection. For all wells, the top of the casing shall extend at least 18 inches above the finished land surface grade. Well casing may not be terminated at or near the base of underground well vaults or placed in basements. In the special case of ground water monitor wells constructed flush with the land surface, the wells shall be capped with an impact-resistant and water-proof cap.

(c) Relation to Property Lines.

(i) Every well shall be located at least 10 lateral feet from any property line or boundary.

(d) Relation to Buildings, Structures and Overhead Obstructions.

(i) When a well is proposed to be located adjacent to a building or any other standing structure, it shall be placed to be as accessible as may be necessary. The well shall be placed such that the building or any overhead projection from the building will not be within a 10-foot radius of the surface casing. The well owner is responsible for maintaining adequate spacing and access following construction.

(ii) Where overhead utility lines or other overhead obstructions are present, minimum distances from all equipment shall be maintained in accordance with OSHA standards.

(e) Setback Distances from Contaminant Sources.

(i) Water wells shall be located the minimum lateral distance from any common pollutant sources listed below:

SOURCE	MINIMUM DISTANCE TO WELL
Livestock Containment Pens	50 feet
Livestock Sewage Lagoons	50 feet
Sewer	50 feet
Septic Tank	50 feet
Disposal (Leach) Field	100 feet

(ii) Beyond minimum distances, an attempt shall be made to locate the well upgradient from contaminant sources.

Notes

037-3 Wyo. Code R. §§ 3-1