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
201–225 of 794City of Poplarville
MS0550006 · 3,334 served
Columbus Air Force Base
MS0440018 · 3,300 served
Hub Water Association
MS0460008 · 3,260 served
Reedtown Water Assn
MS0250021 · 3,260 served
Dennis Water Association
MS0710003 · 3,256 served
Hancock County Water & Sewer
MS0230065 · 3,254 served
Old River Water Assn
MS0790005 · 3,234 served
Mooreville-richmond W/a #2
MS0410032 · 3,200 served
Central W/a-house
MS0500005 · 3,186 served
Rawls Springs Utility District
MS0180012 · 3,168 served
City of Lucedale
MS0200004 · 3,164 served
Central Miss Corr Facility
MS0610089 · 3,150 served
Pelucia Rural W/a #2-grav Hill
MS0080003 · 3,142 served
Sw Rankin Water Association #1
MS0610026 · 3,128 served
Charleston Utilities
MS0680002 · 3,100 served
North Tallahatchie W/a
MS0680007 · 3,089 served
Wren W/a
MS0480013 · 3,068 served
Town of Baldwyn
MS0590001 · 3,066 served
Town of Port Gibson
MS0110005 · 3,047 served
H & H Water System, Inc
MS0620003 · 3,036 served
Northeast Copiah Water Assn
MS0150010 · 3,020 served
Moselle Water Association
MS0340009 · 3,002 served
Nicholson Water Association
MS0550041 · 3,001 served
M & M Water Association
MS0340010 · 3,000 served
Alcorn State University
MS0110013 · 3,000 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