We found 17 public water systems that could serve the same population as Ramona (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Madison | Madison | 6,474 | 0 | 33 |
| Big Sioux Community Water System | Egan | 5,337 | 18 | 2 |
| Kingbrook Iii Rural Water System | Arlington | 2,738 | 0 | 0 |
| Gfp 4-3/lake Vermillion Rec. A | Canistota | 650 | 0 | 0 |
| Gfp 4-1/lake Herman Sw Picnic | Madison | 550 | 0 | 0 |
| Gfp 4-1/lake Herman Shop Syst. | County of Lake | 375 | 0 | 0 |
| Chester Sanitary District | Chester, Egan | 363 | 0 | 40 |
| Wentworth | Egan, Wentworth | 171 | 0 | 35 |
| Rutland School | Rutland | 160 | 0 | 0 |
| Marr's Beach | County of Lake | 152 | 0 | 0 |
| Gracevale Colony | County of Lake | 100 | 0 | 0 |
| Shipwreck Inn | County of Lake | 100 | 0 | 0 |
| Gfp 5-c/twin Lakes Recreation Area | County of Lake | 70 | 0 | 0 |
| Winfred Water District Inc | County of Lake | 60 | 0 | 0 |
| Gfp 5-a/lake Herman Sw Picnic | County of Lake | 50 | 0 | 0 |
| Nunda | Nunda | 43 | 0 | 0 |
| Hagg`s Resort | County of Lake | 25 | 0 | 0 |