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
526–550 of 794Lily Rose W/a #2
MS0330009 · 1,275 served
Robinwood Forest Utility Inc
MS0240212 · 1,275 served
Big Black W/a-camden
MS0450004 · 1,272 served
North Covington W/a-north
MS0160004 · 1,259 served
Homestead Water Association
MS0620005 · 1,251 served
Quincy Water Association #2
MS0480016 · 1,246 served
Copiah W/a - Bayou Pierre #1
MS0150001 · 1,246 served
Kossuth W/a #2-bethlehem
MS0020008 · 1,245 served
West Holmes Water Association
MS0260027 · 1,245 served
Mud Creek Water Association #4
MS0730026 · 1,243 served
North Lee W/a #4-macedonia
MS0410035 · 1,238 served
East Chickasaw W/a #2
MS0090012 · 1,238 served
Shady Grove Water Association
MS0700021 · 1,233 served
South Lowndes W/a
MS0440097 · 1,230 served
Central Yazoo #4-benton
MS0820031 · 1,225 served
Possumneck-carmack W/a
MS0040008 · 1,214 served
Gaines-trace Water Association
MS0480017 · 1,214 served
Town of Centreville
MS0790003 · 1,207 served
Sutter Water Service-magnolia Springs
MS0240271 · 1,201 served
Tillatoba Water Association
MS0810009 · 1,200 served
Eastside Water Association
MS0250004 · 1,200 served
Town of Bassfield
MS0330001 · 1,199 served
Nw Kemper W/a #2- Cleveland
MS0350007 · 1,196 served
Blue Cane, Cowart & Tippo W/a.
MS0680037 · 1,191 served
Mcnair-stampley W/a #2
MS0320010 · 1,188 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