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
51–75 of 794Pearl River Central W/a
MS0550005 · 11,830 served
Prvwsd-pelahatchie Bay
MS0610036 · 11,790 served
Culkin Water Dist
MS0750002 · 11,730 served
City of Ripley
MS0700008 · 11,351 served
North Lauderdale W/a, Inc
MS0380006 · 10,544 served
City of Pass Christian
MS0240009 · 10,436 served
Booneville Water Dept.
MS0590004 · 9,995 served
City of Fulton
MS0290003 · 9,929 served
City of Yazoo City
MS0820014 · 9,913 served
City of Biloxi-north
MS0240084 · 9,858 served
Magees Creek W/a-north
MS0740076 · 9,792 served
City of Holly Springs
MS0470002 · 9,779 served
City of Kosciusko
MS0040004 · 9,646 served
City of Petal
MS0180011 · 9,509 served
City of Indianola
MS0670006 · 9,464 served
City of Pontotoc
MS0580006 · 9,398 served
Lewisburg Water Association
MS0170011 · 9,390 served
City of Amory
MS0480002 · 9,350 served
Walls Water Assn- Lake Forest
MS0170043 · 9,298 served
City of Bay St Louis
MS0230001 · 9,284 served
City of New Albany
MS0730006 · 8,900 served
Cmu - Lake Caroline
MS0450034 · 8,511 served
City of Senatobia
MS0690005 · 8,354 served
Adams Co W/a #2-south
MS0010009 · 8,097 served
Adams Co W/a #4-kaiser Lake
MS0010015 · 8,078 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