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
601–625 of 794Black Jack Water Assn #1
MS0530002 · 1,024 served
C S & I Water Assn #1
MS0110002 · 1,014 served
Mt Comfort W/a-mt Moriah
MS0070011 · 1,011 served
Mt Olive Water Association
MS0250014 · 1,003 served
Brewer Water Association
MS0410002 · 1,000 served
Hudspeth Center
MS0610097 · 1,000 served
Lorena-lemon-burns Water Assn
MS0650003 · 995 served
Mary Springs Water Association
MS0030005 · 995 served
Pan Handle Water Association
MS0100006 · 990 served
Town of Shuqualak
MS0520008 · 989 served
Town of Dekalb
MS0350001 · 985 served
Town of Tremont
MS0290010 · 985 served
Walker Switch Water Assn
MS0710011 · 982 served
Lakewood Environmental
MS0240052 · 982 served
Prcua-picayune Water System
MS0550063 · 979 served
Pope-courtland Water Assn
MS0540017 · 977 served
Buffalo Water Association
MS0790002 · 972 served
Tallahala W/a-ted Clear
MS0310019 · 969 served
Town of Jonestown
MS0140008 · 968 served
Town of Gloster
MS0030003 · 960 served
Town of Derma
MS0070006 · 957 served
Hiwannee Water Association #2
MS0770008 · 956 served
Lake City Water Assn-east
MS0820009 · 956 served
Town of Polkville-water Dept
MS0650007 · 950 served
Town of Crawford
MS0440004 · 942 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