City of Hattiesburg
Hattiesburg, Mississippi · PWSID: MS0180008
Hattiesburg Water Quality Summary
City of Hattiesburg supplies drinking water to about 43,449 people in Hattiesburg, Mississippi, and draws from ground water (wells or aquifers), which is naturally filtered but can carry minerals and contaminants from the surrounding geology. On the IsWaterSafe scale it earns a good Water Safety Score of 80 out of 100 (Grade B), a composite of its EPA SDWIS violation and contaminant record.
EPA SDWIS shows no health-based or monitoring violations on record for City of Hattiesburg, though 16 enforcement actions are logged in its history.
Across the 4 substances sampled, none exceeded its EPA limit. Combined Radium sits highest relative to its ceiling, detected at 2.5 pCi/L against an MCL of 5 pCi/L (sampled April 2018) — within the legal limit.
The most pressing open issue is a health-based violation involving Combined Filter Effluent, beginning October 2016 and still open in EPA records.
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Detected Contaminants
| Contaminant | Detected Level | MCL (Limit) | Status | Sample Date |
|---|---|---|---|---|
| Combined Radium | 2.5 pCi/L | 5 pCi/L | Within Limit | Apr 1, 2018 |
| Combined Filter Effluent | 0.5 NTU | 1 NTU | Within Limit | Oct 1, 2016 |
| Total Trihalomethanes | 40 ppb | 80 ppb | Within Limit | Oct 1, 2022 |
| Haloacetic Acids (HAA5) | 30 ppb | 60 ppb | Within Limit | Oct 1, 2022 |
Violation History
Frequently Asked Questions
City of Hattiesburg has a Water Safety Score of B (80/100). The system serves 43,449 people and has 0 health violations on record. Check the contaminant table above for specific detected substances.
City of Hattiesburg has 0 contaminant exceedances above EPA health guidelines. See the full contaminant detection table above for all tested substances and their levels relative to legal limits and health guidelines.
The Water Safety Score (0-100, grades A through F) is based on contaminant levels relative to legal limits, health guideline exceedances, violation history, and enforcement actions. Higher scores indicate fewer concerns.
If your water system has violations, request the Consumer Confidence Report from your utility, consider getting an independent water test from a certified lab, and look into certified water filters for specific contaminants of concern. For lead, run cold water for 30 seconds before drinking.
Water quality data sourced from EPA's Safe Drinking Water Information System (SDWIS). Safety scores are calculated based on contaminant levels, violations, and enforcement history. This is not a substitute for your utility's official Consumer Confidence Report.
Source: EPA Ground Water and Drinking Water, 2026.