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EPA. "Subpart Q—Public Notification of Drinking Water Violations." 40 CFR141.201 et seq.
EPA. "National Secondary Drinking Water Regulations: Purpose." 40 CFR143.1
epa.gov
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"Information about Public Water Systems". Drinking Water Requirements for States and Public Water Systems. Washington, D.C.: U.S. Environmental Protection Agency (EPA). 2017-03-08.
EPA. "National Primary Drinking Water Regulations: Drinking Water Regulations for Aircraft Public Water Systems." Final rule. Federal Register, 74 FR53590, 2009-10-19.
EPA. "National Primary Drinking Water Regulations: Ground Water Rule." Federal Register, 71 FR65574, 2006-11-08.
EPA (2006-01-05). "National Primary Drinking Water Regulations: Long Term 2 Enhanced Surface Water Treatment Rule." 71 FR654
EPA. "National Primary Drinking Water Regulations: Stage 2 Disinfectants and Disinfection Byproducts Rule." 71 FR388, 2006-01-04.
EPA (2021-01-15). "National Primary Drinking Water Regulations: Lead and Copper Rule Revisions." Final rule. 86 FR4198