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
176–200 of 794Lincoln Rural W/a-heucks Ret
MS0430030 · 3,778 served
City of Houston
MS0090005 · 3,772 served
Hiwannee Water Association #1
MS0770005 · 3,749 served
Eudora Utilities Association
MS0170006 · 3,749 served
Old Union Water System
MS0410033 · 3,749 served
Calhoun Water Association
MS0340001 · 3,730 served
Southwest Covington W/a
MS0160009 · 3,601 served
Town of Hazlehurst
MS0150007 · 3,600 served
Town of Guntown
MS0410006 · 3,577 served
Stringer Water Works
MS0310012 · 3,556 served
East Quitman W/a
MS0120011 · 3,546 served
City of Magee
MS0640006 · 3,526 served
Quincy Water Association #1
MS0480011 · 3,519 served
Evergreen Water Association
MS0610007 · 3,462 served
Jayess-topeka-tilton W/a
MS0390001 · 3,450 served
City of Sardis
MS0540018 · 3,439 served
City of Union
MS0510011 · 3,432 served
Tallahala W/a-antioch
MS0310001 · 3,427 served
Mooreville Richmond #3
MS0410039 · 3,419 served
Collinsville Water Assn
MS0380002 · 3,403 served
City of Morton
MS0620009 · 3,400 served
City of Water Valley
MS0810011 · 3,380 served
City of Newton
MS0510009 · 3,373 served
Naval Construction Battal Ctr
MS0240060 · 3,347 served
Glade Waterworks Assn
MS0340005 · 3,340 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