Biloxi, MS: 18 Violations — 80/100 (2026)
6 ZIP codes · 8 water systems · Updated 2026-06-03
In current tracking cycles, Biloxi records above-average water quality outcomes for MS; compliance history over recent years shows few departures from federal standards and no systemic failures across its water systems.
How Biloxi Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Biloxi, MS
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of water safety grades across Biloxi.
Biloxi Water: The Quick Version
- Your city's water systems recorded 18 violations in the past 5 years.
- Average lead level: 0.001 mg/L.
- Estimated remediation: $2,100 per household.
- CDC health risk index: 14.22 — above typical levels.
Water Systems Serving Biloxi
With 3 utilities splitting service in Biloxi, MS, water accountability is distributed across 8 systems on the federal record.
Overview
We track water quality and home safety data for 6 ZIP codes in Biloxi, Mississippi, covering 8 community water systems serving approximately 65,470 people.
6 of 6 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Biloxi: B (80/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Biloxi water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0010 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 6 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 21 | 6 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 39530 | C | 3 | 0 | City of Biloxi |
| 39531 | B | 3 | 0 | City of Biloxi |
| 39532 | C | 3 | 0 | City of Biloxi |
| 39533 | B | 3 | 0 | City of Biloxi |
| 39534 | A | 3 | 0 | City of Biloxi |
| 39535 | A | 3 | 0 | City of Biloxi |
All ZIP Codes in Biloxi
- 39530 [C] — 3 violations
- 39531 [B] — 3 violations
- 39532 [C] — 3 violations
- 39533 [B] — 3 violations
- 39534 [A] — 3 violations
- 39535 [A] — 3 violations
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Biloxi
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Biloxi
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Biloxi: Remediation Cost in Perspective
Remediation costs in Biloxi represent a moderate share of typical home values — worth budgeting for carefully, though within reach for most homeowners who plan ahead.
Remediation costs are moderate relative to home values in Biloxi. The estimated $1,480–$3,220 range is manageable for most homeowners but still worth budgeting for. Home values are 52% above the Mississippi average.
Protecting Children from Lead in Biloxi
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Biloxi appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Biloxi
The National Flood Insurance Program builds its dataset one claim at a time — each filed claim represents a property where flood damage was severe enough to trigger an insurance payout. For Biloxi, that dataset has accumulated 4736 such events across the program's multi-decade history. 67% of ZIP codes here carry official FEMA flood zone designations, reflecting federal assessments of where flood risk is concentrated. Together, those data points describe a community with a documented, substantial flood exposure — the kind that shapes not just property risk but also the periodic reliability of water supply infrastructure. When flood events reach that scale, treatment systems face peak-load contamination stress, private wells become vulnerable to surface water intrusion, and the distribution network can experience backflow conditions that allow untreated water to re-enter the system.
Biloxi has a significant flood history with 4,736 FEMA flood insurance claims on record, averaging $74,298 per claim. With 67% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,100</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Biloxi, MS