A
91

US Water Score: A

Biloxi, MS 39532

Harrison County · Population served: 28,544 · Data updated July 2026

Service-area evidence: EPA service-area records associate the listed system with this ZIP. Boundaries may still overlap or change.

Water Systems Serving This Area

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WEST JACKSON CO UTILITY DIST
Groundwater · Pop. 28,544
PWSID: MS0300156
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CITY OF BILOXI
Groundwater · Pop. 23,310
PWSID: MS0240001
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CITY OF BILOXI-NORTH
Groundwater · Pop. 9,858
PWSID: MS0240084
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KEESLER AIR FORCE BASE
Groundwater · Pop. 8,006
PWSID: MS0240049
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CITY OF BILOXI-FRENCH
Groundwater · Pop. 4,968
PWSID: MS0240036

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
2.6
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

1 detected 1 above comparison value

UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.

CompoundLevelEPA MCLHealth GuidelineStatus
PFOS7.7 ppt4 ppt4 pptAbove comparison value

Violation History (Last 5 Years)

10Total (5yr)
1Health-Based
8Major

Water Quality Summary

Understanding Your Water in Biloxi

Tap water quality in Biloxi, Mississippi (39532) receives an overall grade of A (Lower record-based concern) with a score of 91 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 21 points above the Mississippi state average of 70. Compared to the national average (75), this area performs significantly better. The area is served by 6 water systems providing water to approximately 28,544 people, using groundwater sources. Testing has found elevated levels of Lead that warrant attention. Notably, 1 PFAS compound exceeds the EPA final MCL value used for comparison — a significant concern given the persistent nature of these chemicals. Over the past 5 years, water systems here have accumulated 10 violations, including 1 health-based violations.

Your Score 91/100 A
vs State 21 pts above Mississippi avg (70)
vs National 16 pts above national avg (75)

What a Grade A Means

A score of 91/100 means public water-system records for Biloxi, MS show relatively few concerns in the US Water Score model. This is an internal score, not an EPA safety rating, and it does not guarantee conditions at any specific tap.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Based on public water-system records, Biloxi, Mississippi receives an internal US Water Score grade of A (Lower record-based concern) with a score of 91/100. This indicates relatively few system-level concerns in our model, but it is not an EPA safety rating and does not guarantee tap conditions inside individual homes.

ZIP code 39532 is served by 6 water systems using groundwater sources, providing water to approximately 28,544 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead was reported at 2.6 ppb in public-system records for Biloxi, Mississippi. This is below the currently applicable EPA action level of 15 ppb, but may be above more protective health guidance; EPA's future LCRI action level is 10 ppb. Household plumbing can materially change tap-level exposure, so consider certified filtration and individual tap testing, especially where children are present.

Yes — 1 PFAS compounds were detected in records associated with water serving Biloxi, Mississippi, and 1 result exceeded the numerical EPA MCL value used for comparison. UCMR5 occurrence results alone are not a regulatory compliance determination. PFAS rules and compliance timelines are evolving; verify current information with the utility and EPA.

Water systems serving Biloxi, Mississippi have received 10 violations in the last 5 years, including 1 health-based violation. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Based on detected contaminants (lead, PFAS), residents in Biloxi, Mississippi should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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