We found 23 public water systems that could serve the same population as Tri-state Implement (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Rock Rapids Municipal Water Works | Rock Rapids | 2,574 | 0 | 2 |
| Lyon-sioux Rws-doon | Doon | 1,640 | 0 | 4 |
| Lyon-sioux Rws-big Sioux | Rock Rapids | 1,390 | 0 | 13 |
| Lyon-sioux Rws-rock Rapids | Rock Rapids | 1,115 | 0 | 1 |
| George Water Supply | George | 1,088 | 0 | 24 |
| Larchwood Water Supply | Larchwood | 866 | 0 | 15 |
| Inwood Water Supply | Inwood | 814 | 0 | 6 |
| Doon Water Supply | Doon | 577 | 0 | 59 |
| Lyon-sioux Rws-boyden | Rock Rapids | 565 | 0 | 14 |
| Little Rock Water Supply | Little Rock | 461 | 0 | 1 |
| Lester Water Supply | Lester | 295 | 0 | 10 |
| First Baptist Church | County of Lyon | 200 | 0 | 0 |
| ZOAR PRESBYTERIAN CHURCH | County of Lyon | 200 | 0 | 0 |
| Alvord Municipal Water Supply | Alvord | 196 | 0 | 37 |
| Our Savior Lutheran Church | County of Lyon | 190 | 0 | 0 |
| Novartis Animal Health Us Inc | Larchwood | 157 | 0 | 0 |
| Two Brothers Supper Club | County of Lyon | 75 | 0 | 0 |
| Rock Rapids Gun Club | County of Lyon | 62 | 0 | 0 |
| Champlin Petroleum Terminal | County of Lyon | 50 | 0 | 0 |
| Otter Valley Country Club | County of Lyon | 33 | 0 | 0 |
| Bethel Reformed Church | County of Lyon | 30 | 0 | 0 |
| Rock River Golf & Country Club | County of Lyon | 30 | 0 | 0 |
| Midwest Reformed Church Camp | County of Lyon | 25 | 0 | 0 |