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
426–450 of 794Lebanon W/a-west
MS0260011 · 1,742 served
Hwy 30 West Water Association
MS0730025 · 1,716 served
Duffee Water Association
MS0510005 · 1,716 served
Town of Noxapater
MS0800006 · 1,713 served
Pope-courtland W/a-north
MS0540069 · 1,713 served
City of Mound Bayou
MS0060013 · 1,711 served
City of Rosedale
MS0060016 · 1,708 served
Center Ridge Water Association
MS0650001 · 1,708 served
Sweet Home Water & Sewer Dist
MS0260015 · 1,695 served
Clara Water Association
MS0770002 · 1,690 served
Hopewell Water Association
MS0360008 · 1,684 served
Beaver Meadow Waterworks Association
MS0310004 · 1,684 served
Lily Rose W/a #1
MS0330005 · 1,675 served
North West Kemper W/a #4
MS0350025 · 1,671 served
Houlka-houston W/a
MS0090004 · 1,668 served
V Lakes Utility District
MS0610038 · 1,661 served
Town of Flora #1
MS0450008 · 1,653 served
Mchenry Utility Assn, Inc
MS0660002 · 1,653 served
Spring Hill Water Assn.
MS0550057 · 1,642 served
Town of Tchula
MS0260016 · 1,642 served
Town of Shaw
MS0060018 · 1,639 served
Highway 98 East Water Assn.
MS0460007 · 1,632 served
Central Yazoo W/a #5
MS0820033 · 1,618 served
Nw Kemper W/a #1-preston
MS0350003 · 1,618 served
Town of Vardaman
MS0070019 · 1,610 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.
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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