Mississippi tap water quality

1,015 community water systems serving 3.2 million people.

Data: U.S. EPA · How we read the data · How we check it

systems with PFAS above a federal limit

84,633

people served by them

235

systems EPA tested for PFAS

systems above the lead action level

PFAS: EPA's 2023–2025 testing. Lead: results from the last five years. 29 more systems have no recent lead results in EPA's database.

Water systems with PFAS above the federal limit

Based on EPA's UCMR 5 results (2023–2025) compared to the April 2024 limits, the way EPA compares them. Systems have until 2029 to comply. Largest first.

Mississippi PFAS report: chart, rankings and data to download →

Largest water systems in Mississippi

City of Jackson
189,673 people · Surface water · Mississippi
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations
City of Gulfport
75,056 people · Groundwater · Mississippi
Lithium above screening level
City of Southaven
56,000 people · Groundwater · Mississippi
No PFAS above limits
City of Olive Branch
54,025 people · Groundwater · Mississippi
No PFAS above limits
City of Hattiesburg
43,449 people · Groundwater · Mississippi
Lead near 2027 level
City of Tupelo
37,000 people · Purchased surface water · Mississippi
No PFAS above limits
City of Meridian
34,466 people · Groundwater · Mississippi
No PFAS above limits
City of Starkville
32,027 people · Groundwater · Mississippi
Lithium above screening level
City of Brandon
31,852 people · Groundwater · Mississippi
Lithium above screening levelAlso: 1 health-based violation since 2016
City of Flowood
31,574 people · Groundwater · Mississippi
Lithium above screening level
City of Greenville
29,602 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violationsAlso: Lithium above screening level
City of Vicksburg
29,238 people · Groundwater · Mississippi
No PFAS above limits
West Jackson County Utility District
28,544 people · Groundwater · Mississippi
No PFAS above limits
City of Oxford
28,500 people · Groundwater · Mississippi
PFOA above limitAlso: PFOS above limit · PFHxS detected
City of Jackson-Maddox Road
28,098 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violations

Mississippi cities and towns

Most health-based violations since 2016

City of Jackson
189,673 people · Surface water · Mississippi
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations
Truelight Redevelopment Grp #2 Water System
546 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violations
Moore Bayou Water Association #3
378 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violations
South Central Water Association
12,260 people · Groundwater · Mississippi
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations · Lithium above screening level
North Hinds Water Association #2 – Chapel Hill
1,595 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violations
Hiwannee Water Association #2
956 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violations
Town of Doddsville
264 people · Groundwater · Mississippi
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations · Coliform bacteria violation
Coahoma Utility District #2
645 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violations
Traxler Water Association
855 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violations
Town of Edwards
1,980 people · Groundwater · Mississippi
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations
Hiwannee Water Association #1
3,749 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violationsAlso: Lithium above screening level
Town of Coahoma
200 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violations
North Benton Water Association
449 people · Groundwater · Mississippi
Arsenic violations
Cleary Water Sewer & Fire Dept
2,500 people · Groundwater · Mississippi
Total trihalomethanes (TTHM) violations
Hancock County Water & Sewer
3,254 people · Purchased groundwater · Mississippi
Total trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violation

All Mississippi utilities on this site

Every Mississippi system serving 50,000+ people or with PFAS above a federal limit, A to Z. Download all 1,015 systems as CSV.

Questions

Does Mississippi tap water have PFAS?

EPA tested 235 community water systems in Mississippi for 29 PFAS between 2023 and 2025. 7 had at least one regulated PFAS detected, and 5 had an entry-point average above a 2024 federal limit. Those 5 systems serve about 84,633 people (3% of people on community water in Mississippi). Systems have until 2029 to meet the limits.

How many Mississippi water systems have violations?

301 systems in Mississippi had at least one health-based violation since 2016 (733 violations in total). 160 violations are currently listed as unaddressed.

Which Mississippi water systems are over the lead action level?

10 systems had a lead 90th percentile above the 15 ppb action level in their most recent results from the last five years. Another 29 systems have no lead results in EPA's database from the last five years. Lead depends on each home's pipes, so a test of your own tap is the only way to know your level.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.