Is Biloxi, MS tap water safe?

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

No federal limits exceeded in EPA data for West Jackson County Utility District.

7 public water systems serve parts of Biloxi. The largest, West Jackson County Utility District, serves 28,544 people. Your water bill names your system.

Largest system

West Jackson County Utility District

28,544 people · Groundwater · EPA ID MS0300156

PFAS	Highest average	Limit	Status
PFOA Not detected	–	4 ppt	Not detected
PFOS Not detected	–	4 ppt	Not detected
PFHxS Not detected	–	10 ppt	Not detected
PFNA Not detected	–	10 ppt	Not detected
HFPO-DA (GenX) Not detected	–	10 ppt	Not detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 2.6 ppb at the 90th percentile (Dec 2024, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Across Mississippi, 5 of 235 water systems EPA tested had PFAS above a 2024 federal limit, and 10 systems were above the lead action level in results from the last five years. Mississippi results.

Biloxi homes and lead pipes

39%

of homes built before 1980 (Mississippi 42%, US 50%)

built before 1950 (Mississippi 7%)

50%

of households rent (Mississippi 30%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Biloxi city (tables B25034, B25003). Estimates for small places have a margin of error.

Which system serves your ZIP code

Based on the ZIP codes each system reported serving. Boundaries don't follow ZIP lines exactly, so your water bill is the final word.

System	ZIP codes in Biloxi
City of Biloxi 23,310 people	39530, 39531
West Jackson County Utility District 28,544 people	39532
Keesler Air Force Base Water System 8,006 people	39534

Other water systems serving Biloxi

City of Biloxi
23,310 people · Groundwater · Mississippi · lists this city
Lithium above screening level
City of Biloxi-North
9,858 people · Groundwater · Mississippi · lists this city
No PFAS above limits
Keesler Air Force Base Water System
8,006 people · Groundwater · Mississippi · reported ZIPs here
PFOS detectedAlso: Lithium above screening level
City of Biloxi-French
4,968 people · Groundwater · Mississippi · lists this city
No PFAS above limits
Echcpud-Tradition Subdivision
557 people · Purchased groundwater · Mississippi · lists this city
Not in EPA's PFAS sampleAlso: 1 health-based violation since 2016
Knollwood Water System
87 people · Purchased groundwater · Mississippi · reported ZIPs here
Not in EPA's PFAS sample

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Gulfport 8 mi City of Gulfport	City of Gulfport	None above limits	1.5 ppb
Hattiesburg 65 mi City of Hattiesburg	City of Hattiesburg	None above limits	10.4 ppb
Meridian 136 mi City of Meridian	City of Meridian	None above limits	0 ppb
Brandon 142 mi City of Brandon	City of Brandon	None above limits	1.6 ppb
Pearl 145 mi City of Pearl	City of Pearl	None above limits	1.2 ppb
Jackson 151 mi City of Jackson	City of Jackson	None above limits	3.2 ppb

Questions

Is Biloxi tap water safe to drink?

West Jackson County Utility District has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Biloxi, MS?

7 public water systems serve parts of Biloxi. The largest is West Jackson County Utility District (28,544 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Biloxi tap water have PFAS?

None detected above EPA's reporting limits. West Jackson County Utility District had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.

Do Biloxi homes have lead pipes?

Census estimates put 39% of Biloxi homes as built before 1980 (Mississippi: 42%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. West Jackson County Utility District's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

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