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
126–150 of 794Central W/a-southwest
MS0500009 · 5,312 served
East Leflore Water & Sewer Dst
MS0420010 · 5,206 served
Macon Electric & Water Dept.
MS0520004 · 5,174 served
East Pontotoc Water Assn
MS0580002 · 5,170 served
Nts Utility Association
MS0380028 · 5,103 served
Fisher Ferry Water District
MS0750004 · 5,094 served
City of Winona
MS0490010 · 5,071 served
Clayton Village W/a #1-east
MS0530006 · 4,984 served
City of Biloxi-french
MS0240036 · 4,968 served
Buckatunna Water Association
MS0770001 · 4,913 served
City of Carthage
MS0400001 · 4,901 served
Riverbend Utilities Inc
MS0240194 · 4,834 served
Gulf Park
MS0300044 · 4,813 served
East Lowndes W/a a East-old Yorkville
MS0440081 · 4,778 served
City of Belzoni
MS0270001 · 4,768 served
Oak Hill Water Assn
MS0580004 · 4,739 served
Stennis Space Center
MS0230015 · 4,700 served
Town of Tunica
MS0720004 · 4,689 served
City of Ellisville
MS0340003 · 4,600 served
City of Leland
MS0760006 · 4,591 served
City of Waynesboro
MS0770003 · 4,570 served
Cason Water Association
MS0480019 · 4,570 served
Clarkdale Water Assn # 1
MS0380001 · 4,500 served
Smiths Crossing Water Assn
MS0640014 · 4,480 served
Glendale Utility District
MS0180007 · 4,477 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