Hattiesburg, MS: 36 Violations — 65/100 (2026)
6 ZIP codes · 11 water systems · Updated 2026-06-03
In recent monitoring cycles, Hattiesburg tap water shows a mixed record for MS — several systems have documented violations alongside areas with clean compliance histories.
How Hattiesburg Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Hattiesburg, MS
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Hattiesburg's 6 ZIP codes.
Key Facts for Hattiesburg Residents
- Your city's water systems recorded 36 violations in the past 5 years.
- Average lead level: 0.0104 mg/L.
- Estimated remediation: $1,350 per household.
- CDC health risk index: 13.65 — above typical levels.
Hattiesburg's Water Providers
Water supply in Hattiesburg, MS follows a divided structure: 3 utilities account for the largest share of residential service out of 11 total systems, each managing its own distribution network and EPA reporting. Because these systems operate independently, rate decisions and compliance outcomes are determined separately.
Overview
We track water quality and home safety data for 6 ZIP codes in Hattiesburg, Mississippi, covering 11 community water systems serving approximately 87,574 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 Hattiesburg: C (65/100)
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
Hattiesburg water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0104 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 | 35 | 6 |
| Revised Total Coliform Rule | Microbiological | 7 | 6 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 39401 | D | 6 | 0 | City of Petal |
| 39402 | C | 6 | 0 | City of Hattiesburg |
| 39403 | C | 6 | 0 | City of Hattiesburg |
| 39404 | B | 6 | 0 | City of Hattiesburg |
| 39406 | B | 6 | 0 | City of Petal |
| 39407 | B | 6 | 0 | City of Hattiesburg |
All ZIP Codes in Hattiesburg
- 39401 [D] — 6 violations
- 39402 [C] — 6 violations
- 39403 [C] — 6 violations
- 39404 [B] — 6 violations
- 39406 [B] — 6 violations
- 39407 [B] — 6 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.
Hattiesburg Community Health Snapshot
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
What's in Hattiesburg's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Hattiesburg
In Hattiesburg, documented water and safety issues can be addressed without making a meaningful dent in home equity — the financial proportionality here is favorable, and the commitment fits within standard property planning frameworks.
Remediation costs in Hattiesburg are relatively low compared to home values. The $900–$2,000 estimated range is a small fraction of median property value. Home values are 100% above the Mississippi average.
Hattiesburg: Lead Risk & Vulnerable Populations
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 Hattiesburg 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.
Hattiesburg: Flood History & Water Damage Risk
Hattiesburg's NFIP record reflects high flood exposure — 1669 claims spanning a long history of significant events, with 67% of ZIP codes in FEMA-designated zones. High flood frequency increases the probability of water quality disruptions at each point in the supply chain: treatment facilities, transmission infrastructure, and private wells all face elevated stress risk when flooding is a recurring feature rather than a rare exception.
Hattiesburg has a significant flood history with 1,669 FEMA flood insurance claims on record, averaging $10,760 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>$1,350</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.
What You Can Do in Hattiesburg
- Test your water at home. City-level data shows averages — your tap may differ. Lead testing is especially recommended given the area's lead levels.
- Install a certified water filter. Filters rated for Total Trihalomethanes (TTHM) can reduce the most common contaminant found in Hattiesburg's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Hattiesburg, MS