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
326–350 of 794Harmony Water Association #4
MS0120016 · 2,260 served
Ms Valley State University
MS0420003 · 2,250 served
Town of Belmont
MS0710001 · 2,250 served
New Providence Water Assn
MS0400006 · 2,226 served
Town of Ecru
MS0580003 · 2,215 served
East Lowndes W/a #1-lee Stokes
MS0440005 · 2,209 served
Lincoln Rural W/a-zetus
MS0430032 · 2,204 served
Shivers Water Association
MS0640021 · 2,200 served
Harmony Water Association #1
MS0120005 · 2,186 served
Adaton W/a #1-josey Creek
MS0530001 · 2,170 served
South Newton Rural W/a #1
MS0510010 · 2,167 served
Bogue Chitto Water Association
MS0430001 · 2,162 served
Lorman Water Association
MS0320013 · 2,162 served
Wilk-amite W/a #1-south
MS0030007 · 2,149 served
North Panola Water District
MS0540072 · 2,145 served
Town of Mantachie
MS0290005 · 2,138 served
East Pike Water Assn.
MS0570051 · 2,107 served
Magnolia Water Association
MS0660021 · 2,107 served
City of Calhoun City
MS0070004 · 2,101 served
Lawrence County Water Assn
MS0390002 · 2,100 served
City of Marks
MS0600007 · 2,099 served
Rocky Creek Utilities, Inc
MS0200006 · 2,095 served
Russell Utilities Inc
MS0380008 · 2,094 served
Hotophia Water Association
MS0540009 · 2,086 served
Town of Taylorsville
MS0650011 · 2,075 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