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
401–425 of 794Soso Community Water Sys. Inc
MS0340020 · 1,840 served
Grenada-bogue Basin/holcomb
MS0220004 · 1,837 served
Grenada-bogue Basin/gore Sprgs
MS0220062 · 1,832 served
Homestead Water Association
MS0570003 · 1,832 served
Se Rankin Water Assn-cato
MS0610049 · 1,828 served
Long Creek W/a (whynot)
MS0380128 · 1,823 served
North Lee W/a #2-birmingham Rd
MS0410025 · 1,822 served
Northeast Amite Water Assn
MS0030024 · 1,816 served
Eagle Lake Water District
MS0750003 · 1,815 served
C & C W/a
MS0620001 · 1,808 served
City of Rolling Fork
MS0630004 · 1,808 served
L & F Water Association
MS0620007 · 1,803 served
New Zion Utilities, Inc
MS0660004 · 1,803 served
Fcwa - Oldenburg
MS0190008 · 1,803 served
Short Coleman Park-nasa Plant
MS0710029 · 1,800 served
Beaverdam W/a-north
MS0310003 · 1,800 served
Fcwa-south Meadville
MS0190009 · 1,794 served
Multi-mart Water Association
MS0200005 · 1,785 served
Chalybeate Water Assn
MS0700003 · 1,782 served
Westover Water Association, Inc
MS0360016 · 1,771 served
Mud Creek Water Association #1
MS0580021 · 1,764 served
Town of Pelahatchie
MS0610018 · 1,761 served
Thorn Water Association
MS0090024 · 1,756 served
Town of Marion
MS0380101 · 1,751 served
Reform Water Association
MS0100007 · 1,742 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