CFR›Title 40›Chapter I›Part 149 ContainsSubparts A–BCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 149—SOLE SOURCE AQUIFERS Subparts A Subpart A—Criteria for Identifying Critical Aquifer Protection Areas Sections 149.1–149.3 B Subpart B—Review of Projects Affecting the Edwards Underground Reservoir, A Designated Sole Source Aquifer in the San Antonio, Texas Area Sections 149.100–149.111 AuthoritySec. 1424(e), Safe Drinking Water Act (42 U.S.C. 300h-3(e); sec. 1427 of the Safe Drinking Water Act, (42 U.S.C. 300h-6). Previous 148 Part 148—Hazardous Waste Injection Restrictions Next 150 Part 150—General