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
101–125 of 794Center W/a-caesar System
MS0550001 · 6,455 served
Central W/a-east Side
MS0500004 · 6,442 served
City of Waveland
MS0230002 · 6,400 served
Jackson Co Utility Authority-east
MS0300166 · 6,270 served
Sebastopol Water Association
MS0620010 · 6,207 served
Jackson Co Utility Authority-west
MS0300164 · 6,178 served
Greenfield Water Association
MS0610011 · 6,088 served
Sunrise Utility Assn Inc
MS0180013 · 6,067 served
Nesbit Water Association
MS0170014 · 5,988 served
Crystal Springs Water Service
MS0150003 · 5,961 served
City of Columbia
MS0460003 · 5,900 served
Okatoma Water Association #2
MS0640022 · 5,866 served
Dixie Community Utility Assn.
MS0180005 · 5,840 served
Kossuth W/a #3-pine Mountain
MS0020007 · 5,830 served
Town of Florence
MS0610009 · 5,824 served
Pleasant Ridge W/a
MS0340014 · 5,808 served
East Lowndes #4-herman-vaughn
MS0440100 · 5,678 served
Marshall Co Water Assn
MS0470105 · 5,599 served
City of Eupora
MS0780005 · 5,586 served
Hilldale Water District
MS0750005 · 5,578 served
Alcorn W/a #1-indian Springs
MS0020006 · 5,456 served
City of Forest
MS0620002 · 5,430 served
Standard Dedeaux Water Association
MS0230063 · 5,386 served
North Pike Water Association
MS0570008 · 5,359 served
Topisaw Creek
MS0430029 · 5,349 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