037-4 Wyo. Code R. § 4-5
(a) The State Engineer recommends that a water quality sample be collected after well construction and aquifer testing is complete. The sample should be collected in an acceptable manner and container and submitted to a qualified laboratory for chemical and/or biological analysis. Additionally, the State Engineer recommends that water quality samples be collected and analyzed at periodic intervals during the life of the well for both chemical constituents and biological materials.
(b) If the water well is to be developed for human consumption serving fifteen (15) or more service connections, or twenty-five (25) or more persons, for sixty (60) days or more a year, regulations developed under the Federal Safe Drinking Water Act apply. Specific requirements of the Act are available from the Water Supply Section Region VIII, U.S. Environmental Protection Agency, 1595 Wynkoop St, Denver, CO 80202.
The provisions of Chapters 3, 11 and 12 of the Wyoming Water Quality Rules and Regulations also apply. You are advised that plans and specifications covering the proposed construction, installation, or modification of any public water supply system designed for this purpose are required to be submitted to and a permit to construct obtained prior to the start of construction from, the WDEQ-WQD, Herschler Building -4W, Cheyenne, WY 82002; phone number:307-777-7781.
037-4 Wyo. Code R. § 4-5