General Protection of

Groundwater Quality and Resources PURPOSE: This rule protects the overall groundwater quality and resources in Missouri. (1) All test holes shall be constructed in a manner that will conserve and protect the groundwater resources and not be a source or channel of contamination or pollution to any aquifer. (2) Test holes may be converted into other types of wells provided advanced written approval is obtained from the department and the well is constructed to the minimum standards provided in 10 CSR 23. AUTHORITY: sections 256.606, 256.615, and 256.626, RSMo 2016.* Original rule filed Aug. 17, 1993, effective March 10, 1994. Amended: Filed Nov. 1, 1995, effective June 30, 1996. Amended: Filed June 27, 2018, effective Feb. 28, 2019. *Original authority: 256.606, RSMo 1991; 256.615, RSMo 1991; and 256.626, RSMo 1985, amended 1991.