State Hub
Mississippi Water Quality
794
Utilities in database
3.1M
Residents served
30%
On private wells
3
Key contaminants tracked
Drinking Water in Mississippi
Mississippi has 794 community water systems serving approximately 3.1 million residents. Primary water sources include groundwater. The most commonly reported contaminants include disinfection byproducts, lead, nitrates. 30% of Mississippi residents rely on private wells. MDEQ holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Mississippi
551–575 of 794Town of Goodman
MS0260008 · 1,188 served
Poplar Springs Water District
MS0640012 · 1,188 served
Tiplersville Water Association
MS0700010 · 1,188 served
Southeast Noxapater Water Assn
MS0800009 · 1,188 served
Broadmoor Utilities, Inc
MS0010005 · 1,185 served
Three Forks Water Association
MS0700014 · 1,185 served
Boggan Ridge W/a-pine Grove
MS0640011 · 1,177 served
Harland Creek Community W/a-b
MS0260022 · 1,177 served
Campground Water Assn
MS0360003 · 1,175 served
Chapel Hill-pleasant Grove W/a
MS0530018 · 1,175 served
Eureka Water Association
MS0540023 · 1,172 served
Coontail Water Association
MS0480004 · 1,170 served
Town of Lambert
MS0600006 · 1,167 served
Central W/a-north Pearl River
MS0500007 · 1,164 served
Carnes Water Association
MS0180003 · 1,160 served
Boyle-skene W/a #2
MS0060050 · 1,156 served
Mcnair-stampley W/a #1
MS0320003 · 1,148 served
Casey Jones Water Assn.
MS0820003 · 1,146 served
Water Association of Pine Grove, Inc
MS0340013 · 1,146 served
Mitchell Water Association
MS0700006 · 1,146 served
College Hill Water Assn
MS0360004 · 1,146 served
Hebron Water Association
MS0540008 · 1,146 served
Tomnolen Water Assn, Inc
MS0780010 · 1,140 served
Nanih-waiya Water Association
MS0800015 · 1,127 served
Blackland Water Association
MS0590003 · 1,127 served
Key Contaminant Concerns in Mississippi
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing.
Nitrates
Nitrate (NO₃⁻) is a nitrogen-containing compound that forms naturally through the decomposition of organic matter. At elevated concentrations — almost always from human activity — nitrate interferes with the blood's ability to carry oxygen. The United States produces over 23 million tons of nitrogen fertilizer annually, making agricultural runoff the dominant source of nitrate contamination.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
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Data source: Utility data from EPA SDWIS. 794 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-22