7 Louisiana water districts with results read from their own annual water quality report or EPA testing, largest first.
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- Baton Rouge Water Company579,714 people · 16 results
- New Orleans Carrollton Ww334,903 people · 16 results · 1 over a limit
- E Jefferson Ww District 1275,163 people · 24 results
- Shreveport Water System193,488 people · 14 results · 1 over a limit
- Lafayette Utilities Water System169,389 people · 10 results
- W Jefferson Ww District 2140,264 people · 21 results
- City of Denham Springs Water System25,725 people · 11 results