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
501–525 of 794Town of Boyle
MS0060004 · 1,400 served
Town of Monticello
MS0390003 · 1,400 served
Thrasher Water Association
MS0590013 · 1,400 served
Harmontown Water Association Inc
MS0360007 · 1,393 served
Town of Coldwater
MS0690002 · 1,381 served
Harmony Ridge Water Assn
MS0150006 · 1,380 served
South Centreville W/a
MS0790006 · 1,375 served
Edinburg Domestic Water Association
MS0400002 · 1,375 served
S E Greene Water Authority
MS0210012 · 1,375 served
New Site Water Association
MS0590018 · 1,373 served
Acona Water Association #1
MS0260001 · 1,373 served
Alcorn W/a #2-biggersville
MS0020001 · 1,365 served
Paulding Water Association
MS0310009 · 1,363 served
Town of Renova
MS0060015 · 1,357 served
Town of Kilmichael
MS0490005 · 1,341 served
Hilton Heights Water Assn #1
MS0820008 · 1,336 served
Jeff Davis W/a Inc
MS0810005 · 1,312 served
Town of Jumpertown
MS0590009 · 1,300 served
Randolph Water Association #1
MS0580007 · 1,299 served
Bond Water Association #1
MS0800001 · 1,299 served
Ellison Ridge Water Assn
MS0800013 · 1,287 served
West Madison Utl Dist
MS0450016 · 1,287 served
Rose Hill Water Association
MS0310011 · 1,280 served
Town of Como
MS0540004 · 1,279 served
Town of Burnsville
MS0710002 · 1,278 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