We found 47 public water systems that could serve the same population as Edward Posti (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Weirton Area Water Board | Weirton | 22,694 | 30 | 52 |
| Weirton Steel Corporation | County of Brooke | 8,200 | 0 | 0 |
| Follansbee Hooverson Heights | Follansbee | 4,970 | 0 | 28 |
| Washington Pike Psd | Wellsburg | 3,571 | 0 | 5 |
| Wellsburg, City Of | Wellsburg | 3,468 | 0 | 37 |
| Follansbee Municipal | Follansbee | 2,628 | 0 | 6 |
| Hammond Psd | Windsor Heights | 2,186 | 0 | 22 |
| Beech Bottom Water Dept | Beech Bottom | 610 | 0 | 11 |
| Windsor Power House Coal Co | County of Brooke | 600 | 0 | 0 |
| County of Brooke | 450 | 0 | 0 | |
| Cross Creek Psd | County of Brooke | 270 | 0 | 0 |
| Brooke County Psd | Colliers | 240 | 0 | 16 |
| Greenbriar Water Corporation | County of Brooke | 183 | 0 | 0 |
| County of Brooke | 150 | 0 | 0 | |
| Silver Metal-teco | County of Brooke | 140 | 0 | 0 |
| Wheeling Steel | County of Brooke | 130 | 0 | 0 |
| Rg Steel Llc | Beech Bottom | 120 | 0 | 0 |
| Daileys Trailer Court | Colliers | 111 | 0 | 0 |
| Colliers Elementary School | Colliers | 110 | 0 | 0 |
| Globe Refractories | County of Brooke | 100 | 0 | 0 |
| Alan Swanson | County of Brooke | 100 | 0 | 0 |
| Brooke Mhp | County of Brooke | 85 | 0 | 0 |
| Eagle Manufacturing Company | County of Brooke | 80 | 0 | 0 |
| George Simaks | County of Brooke | 75 | 0 | 0 |
| Milford Woods | County of Brooke | 60 | 0 | 0 |
| Stillson Mhp | County of Brooke | 60 | 0 | 0 |
| Constantine Evangelinas | County of Brooke | 60 | 0 | 0 |
| Smith Oil | Wellsburg | 60 | 0 | 0 |
| Sue Rutherford | County of Brooke | 50 | 0 | 0 |
| Robert Trice | County of Brooke | 40 | 0 | 0 |
| Patricia Granoto | County of Brooke | 40 | 0 | 0 |
| Donna Bishopriggs | County of Brooke | 40 | 0 | 0 |
| John Rasz | County of Brooke | 40 | 0 | 0 |
| United Methodist Church | County of Brooke | 40 | 0 | 0 |
| Carver Transportation Facility | Wellsburg | 30 | 0 | 0 |
| Art Lewis | County of Brooke | 30 | 0 | 0 |
| Mom And Pops Quick Stop | Colliers | 25 | 0 | 0 |
| Driftwood Cafe | Beech Bottom | 25 | 0 | 0 |
| Christine Berchtold | County of Brooke | 25 | 0 | 0 |
| Rockdale Metal Products Corp | County of Brooke | 25 | 0 | 0 |
| Welshhans Grocery | Colliers | 25 | 0 | 0 |
| W J Leon | County of Brooke | 25 | 0 | 0 |
| John Bernardini | County of Brooke | 25 | 0 | 0 |
| Midtown Motel | County of Brooke | 25 | 0 | 0 |
| Hal Brunty | County of Brooke | 25 | 0 | 0 |
| German Beer Gardens | Bethany | 25 | 0 | 0 |
| Brooke Co Suburban Water | Wellsburg | 0 | 0 | 0 |