Safest Drinking Water in Louisiana 2026
Louisiana has 5 public water systems serving 1,568,677 people. The safest system is E Jefferson Ww District 1 in Jefferson with a score of 100/100.
Top 5 Water Systems in Louisiana
| # | Water System | City | Pop. Served | Source | Violations | Score |
|---|---|---|---|---|---|---|
| 1 | E Jefferson Ww District 1 | Jefferson | 275,163 | Surface water | 0 | A (100) |
| 2 | Lafayette Utilities Water System | Lafayette | 169,389 | Ground water | 0 | A (100) |
| 3 | Baton Rouge Water Company | Baton Rouge | 596,844 | Ground water | 0 | A (97) |
| 4 | New Orleans Carrollton Water Works | New Orleans | 334,903 | Surface water | 2 | F (57) |
| 5 | Shreveport Water System | Shreveport | 192,378 | Surface water | 76 | F (10) |
Water quality data for Louisiana is sourced from the EPA Safe Drinking Water Information System (SDWIS), which tracks compliance for all public water systems.
Frequently Asked Questions
E Jefferson Ww District 1 in Jefferson has the highest Water Safety Score in Louisiana at 100/100 (Grade A), serving 275,163 people.
Louisiana has 5 public water systems serving 1,568,677 people. The average Water Safety Score is 73/100.
The Water Safety Score (0-100) is based on health violations (40%), contaminant exceedances (30%), enforcement history (20%), and monitoring violations (10%). Higher scores mean cleaner, safer water.
Water Safety Score: health violations (40%), contaminant exceedances (30%), enforcement history (20%), monitoring violations (10%).