We found 61 public water systems in Harrison county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Clarksburg Water Board | Clarksburg | 18,179 | 28 | 22 |
| Bridgeport City Of | Bridgeport | 9,636 | 0 | 6 |
| Shinnston Water Works | County of Harrison | 6,200 | 0 | 0 |
| Shinnston City Of | Shinnston | 4,910 | 0 | 59 |
| Greater Harrison Psd Lost Creek Mt Clare | West Milford | 3,398 | 0 | 11 |
| Shortline Psd | Wallace | 2,703 | 0 | 20 |
| Sun Valley Psd | Reynoldsville | 2,698 | 0 | 5 |
| Greater Harrison Psd Valley Of Good Hope | West Milford | 2,505 | 0 | 13 |
| Stonewood City Of | Stonewood | 2,171 | 0 | 27 |
| Greater Harrison Psd - Quiet Dell | Nutter Fort | 1,938 | 0 | 12 |
| Enlarged Hepzibah Psd | Hepzibah | 1,926 | 0 | 20 |
| Nutter Fort Town Of | Nutter Fort | 1,779 | 0 | 17 |
| Salem Water Board | Salem | 1,735 | 0 | 115 |
| Lumberport Town Of | Lumberport | 1,646 | 0 | 231 |
| Anmoore Town Of | Anmoore | 970 | 0 | 85 |
| Summit Park Psd | Clarksburg | 927 | 0 | 4 |
| Coons Run Psd | Adamsville, Francis | 820 | 0 | 36 |
| West Milford Water Works | West Milford | 661 | 0 | 27 |
| Liberty Water Co-op | County of Harrison | 600 | 0 | 0 |
| Country Club Additions Psd | County of Harrison | 500 | 0 | 0 |
| Clarksburg Water Board | County of Harrison | 500 | 0 | 0 |
| Arlington-glen Falls Water | County of Harrison | 435 | 0 | 0 |
| East View Psd 194 | Clarksburg | 368 | 0 | 14 |
| Mt Clare Road Psd | County of Harrison | 275 | 0 | 0 |
| Monongah Water - Gypsy System | County of Harrison | 200 | 0 | 0 |
| Monongah Water-owings Willard | County of Harrison | 200 | 0 | 0 |
| Shinnston - Saltwell Road | Saltwell | 196 | 0 | 34 |
| Parkview Water Fund | County of Harrison | 160 | 0 | 0 |
| East View Psd 172 | Clarksburg | 160 | 0 | 16 |
| Lake Floyd Club Inc | Bristol | 150 | 0 | 0 |
| Monongahelia Power Co | County of Harrison | 150 | 0 | 0 |
| Clarksburg Water Board | County of Harrison | 111 | 0 | 0 |
| Clarksburg Water Board | County of Harrison | 111 | 0 | 0 |
| Gore Water Assoc | County of Harrison | 105 | 0 | 0 |
| John Rutski | County of Harrison | 100 | 0 | 0 |
| Bridgeport Country Club Inc | County of Harrison | 100 | 0 | 0 |
| Margaret Harbert | County of Harrison | 100 | 0 | 0 |
| Larry Branson | County of Harrison | 90 | 0 | 0 |
| Miracle Meadows School | Salem | 55 | 0 | 0 |
| Monongah Water Works | County of Harrison | 51 | 0 | 0 |
| Sun Valley Psd - Junkin Avenue | Reynoldsville | 51 | 0 | 0 |
| Gore Recreational Association | County of Harrison | 50 | 0 | 0 |
| Loretta J Davis | County of Harrison | 50 | 0 | 0 |
| Nixon Mhp | County of Harrison | 48 | 0 | 0 |
| Grafton Coal Company | County of Harrison | 45 | 0 | 0 |
| Mrs Bland Conrad | County of Harrison | 30 | 0 | 0 |
| Consolidated Gas Supply Corp | County of Harrison | 30 | 0 | 0 |
| Hedges Motel | County of Harrison | 28 | 0 | 0 |
| Lake Floyd Golf Club | Bristol | 25 | 0 | 0 |
| Betty Jones | County of Harrison | 25 | 0 | 0 |
| Pauline Hildreth | County of Harrison | 25 | 0 | 0 |
| Consolidated Gas Supply Corp | County of Harrison | 25 | 0 | 0 |
| Century Mine 101 | County of Harrison | 25 | 0 | 0 |
| Miracle Meadows School | County of Harrison | 25 | 0 | 0 |
| Miracle Meadows School Inc | County of Harrison | 25 | 0 | 0 |
| Prospect Hall | County of Harrison | 25 | 0 | 0 |
| Consolidated Gas Supply Corp | County of Harrison | 25 | 0 | 0 |
| Don Davis | County of Harrison | 20 | 0 | 0 |
| Don Davis | County of Harrison | 20 | 0 | 0 |
| Wilderness Park | Wolf Summit | 0 | 0 | 0 |
| Shortline Psd | County of Harrison | 0 | 0 | 0 |