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
76–100 of 794Keesler Air Force Base
MS0240049 · 8,006 served
Barrontown W/a
MS0180001 · 7,999 served
Town of Aberdeen
MS0480001 · 7,783 served
Lamar Park Water & Sewage Assn
MS0370004 · 7,714 served
Fannin Water Assn-north
MS0610008 · 7,690 served
City of Louisville
MS0800004 · 7,545 served
City of Batesville
MS0540002 · 7,463 served
East Lowndes W/a B West-old Yorkville Rd
MS0440103 · 7,355 served
East Madison Water Assn-west
MS0450007 · 7,339 served
City of Iuka
MS0710006 · 7,268 served
Kiln Utility and Fire District of Hancoc
MS0230050 · 7,051 served
East Lowndes W/a #2-huckleberry
MS0440080 · 7,035 served
Progress Comm Water Assn
MS0370008 · 7,017 served
City of Richland
MS0610023 · 7,000 served
Farmington Water Association
MS0020003 · 6,925 served
City of Philadelphia
MS0500008 · 6,921 served
Black Bayou Water Assn.
MS0760076 · 6,917 served
Algoma Water Association
MS0580001 · 6,879 served
Town of Saltillo
MS0410012 · 6,766 served
City of Hernando-jaybird
MS0170002 · 6,750 served
Southwest Jones W/a-north
MS0340019 · 6,690 served
Tunica County Utility District
MS0720024 · 6,690 served
Combined Utilities
MS0200001 · 6,658 served
Arnold Line Water Association
MS0370001 · 6,600 served
Town of Caledonia
MS0440002 · 6,589 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.
Mississippi Water FAQs
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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