New Orleans Carrollton Water Works
New Orleans, Louisiana · PWSID: LA1071009
New Orleans Water Quality Summary
New Orleans Carrollton Water Works supplies drinking water to about 334,903 people in New Orleans, Louisiana, and draws from surface water (rivers, lakes, or reservoirs), which requires fuller treatment for runoff, sediment, and microbial risk. On the IsWaterSafe scale it earns a failing Water Safety Score of 57 out of 100 (Grade F), a composite of its EPA SDWIS violation and contaminant record.
EPA records show 2 health-based violations for this system plus 3 monitoring violations. A health-based violation means a contaminant exceeded its legal EPA limit, the most serious category in the Safe Drinking Water Act. The system has 27 enforcement actions on file in response.
Across the single substance sampled, none exceeded its EPA limit. Chlorine sits highest relative to its ceiling, detected at 2 ppm against an MCL of 4 ppm (sampled March 2016) — within the legal limit.
The most recent documented episode is a monitoring violation involving Chlorine, beginning March 2016 and marked resolved June 2016.
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Detected Contaminants
| Contaminant | Detected Level | MCL (Limit) | Status | Sample Date |
|---|---|---|---|---|
| Chlorine | 2 ppm | 4 ppm | Within Limit | Mar 1, 2016 |
Violation History
Frequently Asked Questions
New Orleans Carrollton Water Works has a Water Safety Score of F (57/100). The system serves 334,903 people and has 2 health violations on record. Check the contaminant table above for specific detected substances.
New Orleans Carrollton Water Works 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.