We found 38 public water systems that could serve the same population as Montgomery County Speedway (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Monroe Co Pwsd 2 | Paris | 6,677 | 0 | 5 |
| Montgomery Co Pwsd 1 | Counties of Montgomery, Warren | 4,500 | 0 | 17 |
| Montgomery City | Montgomery City | 2,712 | 0 | 11 |
| Wellsville | Wellsville | 1,270 | 0 | 90 |
| Montgomery Co R-ii High School | County of Montgomery | 780 | 0 | 0 |
| New Florence | New Florence | 769 | 0 | 12 |
| Jonesburg | Jonesburg | 768 | 0 | 4 |
| Bellflower | Bellflower | 413 | 0 | 19 |
| High Hill | High Hill | 300 | 0 | 5 |
| Montgomery Co Pwsd 1 Jonesburg | County of Montgomery | 300 | 0 | 5 |
| J D Streett 170 | Hermann | 200 | 0 | 10 |
| Graham Cave State Park Campground | County of Montgomery | 200 | 0 | 8 |
| Rhineland | Rhineland | 170 | 0 | 40 |
| Middletown | Middletown | 167 | 0 | 81 |
| Gosen's Tavern | County of Montgomery | 100 | 0 | 0 |
| Mineola Westbound Rest Area | County of Montgomery | 100 | 0 | 0 |
| Mineola Eastbound Rest Area | County of Montgomery | 100 | 0 | 0 |
| Endless Summer Winery | County of Montgomery | 100 | 0 | 0 |
| Runway Estates Water Assn | County of Montgomery | 80 | 0 | 0 |
| Subway | County of Montgomery | 75 | 0 | 0 |
| Loutre Shore Country Club | County of Montgomery | 50 | 0 | 0 |
| Kan Do Kampground & Rv Park | County of Montgomery | 40 | 0 | 0 |
| New Florence Wood Products | County of Montgomery | 40 | 0 | 0 |
| Loutre Market | Hermann | 30 | 0 | 0 |
| Roy L Utilities | County of Montgomery | 30 | 0 | 0 |
| Graham Cave State Park Office | County of Montgomery | 25 | 0 | 0 |
| Country Lane Health Care, | Country Lane Hc | 25 | 0 | 0 |
| Steamboat Junction | County of Montgomery | 25 | 0 | 0 |
| Ken's Mobil Service | Kens Movil Serv | 25 | 0 | 0 |
| Dales Fina | Dales Fina | 25 | 0 | 0 |
| Liberty Baptist Church | Liberty Baptist | 25 | 0 | 0 |
| Hopewell Baptist Church | Hopewell Baptis | 25 | 0 | 0 |
| Loop Assn 130 | County of Montgomery | 25 | 0 | 0 |
| Lazy Day Campground | County of Montgomery | 25 | 0 | 0 |
| Danville Sinclair | County of Montgomery | 25 | 0 | 0 |
| Ranch Roy L | Ranch Roy L | 20 | 0 | 0 |
| Montgomery Co Pwsd 1 Montgomery City | County of Montgomery | 20 | 0 | 0 |
| Loutre Food Market | Loutre Food Mkt | 0 | 0 | 0 |