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
376–400 of 794Grenada Co W/s-mondy Rd/elliot
MS0220007 · 1,964 served
Taylor Water Association
MS0360014 · 1,962 served
Town of Hatley
MS0480008 · 1,962 served
City of Horn Lake - Twin Lakes
MS0170025 · 1,948 served
Town of Decatur
MS0510004 · 1,945 served
Highpoint Water Association #1
MS0800011 · 1,940 served
Central Yazoo #3 Mechanicsbrg
MS0820030 · 1,927 served
Sun Creek Water Inc-pheba
MS0130003 · 1,923 served
Brooklyn Water Association
MS0180014 · 1,901 served
City of Raleigh
MS0650008 · 1,901 served
Town of Sunflower
MS0670012 · 1,900 served
Bcm Water Association
MS0470106 · 1,898 served
City of Lumberton
MS0370005 · 1,896 served
Town of Wesson
MS0150011 · 1,891 served
Town of Prentiss
MS0330008 · 1,882 served
Sunflower Utility Assc Inc
MS0660022 · 1,880 served
Homewood Water Association
MS0620006 · 1,877 served
Acl Water Association #2
MS0610041 · 1,861 served
Tri-county W/a #1-jasper
MS0310014 · 1,861 served
Tri-county W/a #3-summerland
MS0310024 · 1,853 served
Saucier Utilities
MS0240011 · 1,853 served
Town of Golden Water Dept
MS0710005 · 1,848 served
Town of Plantersville
MS0410011 · 1,845 served
Taylorsville W/a #1
MS0610028 · 1,845 served
Blue Springs W/a
MS0730002 · 1,840 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