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
776–794 of 794Turner Springs Water Assn
MS0360048 · 528 served
South Quitman-s Lambert Utl
MS0600010 · 528 served
Macedonia Water Association
MS0070008 · 528 served
Morrill Road Water Association
MS0530041 · 526 served
Philipp Water Association
MS0680033 · 518 served
Town of Sumner
MS0680011 · 517 served
Siloam W/a #4-pine Bluff
MS0130017 · 515 served
Town of Walnut Grove
MS0400011 · 510 served
Town of Dlo
MS0640003 · 510 served
White Cypress Lakes
MS0230051 · 507 served
Town of Chunky
MS0510002 · 507 served
Montrose Water Association
MS0310008 · 502 served
St Thomas Water Association
MS0250024 · 500 served
Louin Water Works
MS0310007 · 500 served
Town of Meadville
MS0190003 · 500 served
Sw Ms Comm College
MS0570011 · 500 served
Lake Water Works
MS0620008 · 500 served
South Holmes W/a #1
MS0260014 · 500 served
Longview Water Association
MS0530009 · 500 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
City Water Reports
Water Quality Guides
Data source: Utility data from EPA SDWIS. 794 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-22