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
251–275 of 794City of Raymond
MS0250020 · 2,788 served
North Hinds W/a #6-shepherd Hills
MS0250094 · 2,785 served
Town of Sallis
MS0040010 · 2,785 served
Ingomar Water Association
MS0730003 · 2,782 served
Town of Falkner
MS0700005 · 2,780 served
Town of Woodville
MS0790007 · 2,772 served
Sharon Water Works
MS0340018 · 2,769 served
Fmh Water Association
MS0670005 · 2,740 served
Central Rankin Water Assn
MS0610081 · 2,732 served
Hide-a-way Lake Water System
MS0550013 · 2,727 served
Southwest Lauderdale W/a
MS0380117 · 2,724 served
Belmont Water Association
MS0170001 · 2,719 served
Bunker Hill Water Association
MS0460001 · 2,700 served
North Lee W/a #1-barnes Crosng
MS0410024 · 2,672 served
Town of Hickory
MS0510006 · 2,669 served
Improve Water Association
MS0740002 · 2,666 served
Keownville Rural Water Assn
MS0730004 · 2,663 served
City of Ruleville
MS0670011 · 2,657 served
Kipling W/a #1
MS0350002 · 2,637 served
Se Rankin Water Assn-johns
MS0610025 · 2,625 served
N E Perry Utl Assn-#1
MS0560003 · 2,619 served
Canebrake Utility Assoc Inc
MS0370016 · 2,619 served
Town of Leakesville
MS0210002 · 2,616 served
Short-coleman Park Water Assn #3
MS0710008 · 2,606 served
Lincoln Rural W/a-beauregard
MS0430027 · 2,600 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