We found 42 public water systems in St. Helena county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| WWKS DISTRICT 2 OF ST HELENA | County of St. Helena Parish | 4,554 | 0 | 2 |
| Water Works District 2 - Phase 3 | County of St. Helena Parish | 1,671 | 0 | 2 |
| Greensburg Water System | County of St. Helena Parish | 1,340 | 0 | 3 |
| Water Works District 2 - Dennis Mills | County of St. Helena Parish | 1,071 | 0 | 0 |
| Water Works District 2 - Cross Roads | County of St. Helena Parish | 1,017 | 0 | 6 |
| Natalbany Creek Campground | County of St. Helena Parish | 600 | 0 | 0 |
| Darlington Wwks, Assn. | County of St. Helena Parish | 480 | 0 | 0 |
| Woodland High School | County of St. Helena Parish | 300 | 0 | 0 |
| Montpelier Water Supply | County of St. Helena Parish | 290 | 0 | 6 |
| Pine Grove Waterworks Association | County of St. Helena Parish | 280 | 0 | 0 |
| New Zion School | County of St. Helena Parish | 200 | 0 | 0 |
| Fifth Ward Elem School | County of St. Helena Parish | 150 | 0 | 0 |
| Talltimbers Casino | County of St. Helena Parish | 100 | 0 | 0 |
| Frank & Romonas Cafe | County of St. Helena Parish | 100 | 0 | 0 |
| Mr Hugh Gainey | County of St. Helena Parish | 65 | 0 | 0 |
| Cal Maine Foods, Inc | County of St. Helena Parish | 57 | 0 | 0 |
| Bebos Casino | County of St. Helena Parish | 50 | 0 | 0 |
| The Hitching Post Cafe | County of St. Helena Parish | 50 | 0 | 0 |
| Diversion Water - Tranquility Lakes | County of St. Helena Parish | 39 | 0 | 0 |
| Amerchol | County of St. Helena Parish | 36 | 0 | 0 |
| Country Boy Lounge | County of St. Helena Parish | 26 | 0 | 0 |
| Jack's Grocery, Inc. | County of St. Helena Parish | 26 | 0 | 0 |
| Blue Light Inn | County of St. Helena Parish | 26 | 0 | 0 |
| Tnt Club Water System | County of St. Helena Parish | 26 | 0 | 0 |
| Tnt Cafe & Lounge | County of St. Helena Parish | 26 | 0 | 0 |
| Watson Slaughter House | County of St. Helena Parish | 26 | 0 | 0 |
| Lee Travis Grocery | County of St. Helena Parish | 26 | 0 | 0 |
| M & M Community Grocery | County of St. Helena Parish | 26 | 0 | 0 |
| Ragon's Grocery | County of St. Helena Parish | 26 | 0 | 0 |
| Liverpool Grocery | County of St. Helena Parish | 26 | 0 | 0 |
| Pipeline Grocery | County of St. Helena Parish | 26 | 0 | 0 |
| J & B Bar | County of St. Helena Parish | 26 | 0 | 0 |
| Jones Slaughter House | County of St. Helena Parish | 26 | 0 | 0 |
| Farm Fresh Foods | County of St. Helena Parish | 26 | 0 | 0 |
| United States Coast Guard | County of St. Helena Parish | 25 | 0 | 0 |
| Transcontental Gas Pipeline 65 | County of St. Helena Parish | 20 | 0 | 0 |
| United Gas Pipeline Pumping St | County of St. Helena Parish | 15 | 0 | 0 |
| Pine Lake Camp Ground-h Graves | County of St. Helena Parish | 15 | 0 | 0 |
| W W Meat Co | County of St. Helena Parish | 8 | 0 | 0 |
| Chipola Grocery & Service Stn | County of St. Helena Parish | 7 | 0 | 0 |
| Durnins Service Station | County of St. Helena Parish | 7 | 0 | 0 |
| Millers Groc & Service Stn | County of St. Helena Parish | 4 | 0 | 0 |