We found 57 public water systems in St. Clair county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Odenville (util Board Of The Town Of) | Odenville | 21,642 | 107 | 54 |
| Pell City Water Works | Pell City | 15,090 | 67 | 21 |
| New London Water & Fire Pro Authority | Cropwell | 5,994 | 0 | 0 |
| Springville Water Works | Springville | 5,973 | 0 | 5 |
| Wattsville Water Authority | Wattsville | 5,067 | 0 | 6 |
| Cook Springs Water Authority | County of St. Clair | 4,191 | 0 | 4 |
| Ashville Water And Sewer | Ashville | 3,984 | 0 | 13 |
| Margaret Water Works | Margaret | 3,924 | 0 | 2 |
| Riverside (town Of) | Riverside | 3,552 | 0 | 4 |
| Ragland (the Ww Board Of The Town Of) | Ragland | 3,249 | 0 | 1 |
| Moody Water Works | County of St. Clair | 2,818 | 0 | 0 |
| Northwest St Clair Water System | Ashville | 2,706 | 0 | 4 |
| Chandler Mtn/greasy Cove Water Authority | Steele | 1,734 | 0 | 1 |
| Argo Water System | County of St. Clair | 1,620 | 0 | 0 |
| Steele Water Works Board | Steele | 1,614 | 0 | 11 |
| Kimberly-clark Corporation | County of St. Clair | 1,492 | 0 | 0 |
| Central Ala Prison | County of St. Clair | 1,100 | 0 | 0 |
| Pinedale Shores Wsfpa | Ashville | 1,050 | 17 | 9 |
| Wolf Creek Water Authority | Riverside | 984 | 0 | 0 |
| The Oaks At St. Claire | County of St. Clair | 576 | 0 | 0 |
| Mays Bend Water Co-operative | County of St. Clair | 495 | 0 | 0 |
| The Village At Moody | County of St. Clair | 408 | 0 | 0 |
| St Clair Shores | County of St. Clair | 300 | 0 | 0 |
| Church Of God Camp Utopia | County of St. Clair | 250 | 0 | 0 |
| Baptist Home For Sr.citizens | Cook Springs | 200 | 0 | 0 |
| General Lee Marina | County of St. Clair | 200 | 0 | 0 |
| Surfside Restaurant | County of St. Clair | 200 | 0 | 0 |
| Camp Winna Taska | County of St. Clair | 175 | 0 | 0 |
| Comm Action & Comm Dev Agency Of N A | County of St. Clair | 125 | 0 | 0 |
| Camp Chula Vista | County of St. Clair | 100 | 0 | 0 |
| Coosa Island Marina | County of St. Clair | 100 | 0 | 0 |
| Rabbit Branch Marina | County of St. Clair | 100 | 0 | 0 |
| Camp Sumatanga | Gallant | 100 | 0 | 0 |
| Bible Methodist Christian Sch. | County of St. Clair | 95 | 0 | 0 |
| Camp Tekawitha | County of St. Clair | 80 | 0 | 0 |
| Shady Oaks Koa | County of St. Clair | 80 | 0 | 0 |
| Branchville Water System | County of St. Clair | 75 | 0 | 0 |
| Fat Mans Bar-b-que | County of St. Clair | 70 | 0 | 0 |
| Happy Jack Restaurant | County of St. Clair | 70 | 0 | 0 |
| Twin Island South Inc | County of St. Clair | 70 | 0 | 0 |
| Le-lo-la Lane Trailer Ct | County of St. Clair | 66 | 0 | 0 |
| Chandler Mt School | County of St. Clair | 66 | 0 | 0 |
| Riff-raff (acres) Of Logan Martin Inc. | County of St. Clair | 60 | 0 | 0 |
| Lees Trailer Court | County of St. Clair | 60 | 0 | 0 |
| Arrowhead Point | County of St. Clair | 50 | 0 | 0 |
| Roes Trailer Court | County of St. Clair | 50 | 0 | 0 |
| Clarence Lee Trailer Court | Cropwell | 50 | 0 | 0 |
| Jack Cline Nursing Home | County of St. Clair | 49 | 0 | 0 |
| Mt Top Restaurant | County of St. Clair | 40 | 0 | 0 |
| Birmingham Presbytery Camp | County of St. Clair | 40 | 0 | 0 |
| Surfside Trailer Park | County of St. Clair | 38 | 0 | 0 |
| Pocomo Park | County of St. Clair | 35 | 0 | 0 |
| Hannah Home & Christian Mission | County of St. Clair | 32 | 0 | 0 |
| Surfside Trailer Ct & Marina | County of St. Clair | 32 | 0 | 0 |
| Williamson Trailer Court | County of St. Clair | 32 | 0 | 0 |
| Sundance Marina | County of St. Clair | 32 | 0 | 0 |
| Coosa Valley Water Supply District | Ashville | 0 | 0 | 0 |