We found 73 public water systems that could serve the same population as Calhoun Knights Columbus #4417 (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Calhoun County Rwd | County of Calhoun | 3,810 | 0 | 6 |
| Hardin | Hardin | 1,000 | 0 | 19 |
| Kampsville | Kampsville | 400 | 0 | 5 |
| Batchtown | Batchtown | 290 | 0 | 14 |
| Brussels | Brussels | 245 | 0 | 31 |
| Illinois Riverdock Restaurant | County of Calhoun | 100 | 0 | 0 |
| Michael Tavern | County of Calhoun | 100 | 0 | 0 |
| The Ice Cream Place | County of Calhoun | 100 | 0 | 0 |
| Kinders Resturant | County of Calhoun | 100 | 0 | 0 |
| Riverfront Cafe | County of Calhoun | 70 | 0 | 0 |
| Kc South County | County of Calhoun | 70 | 0 | 0 |
| Clendenny Store | County of Calhoun | 60 | 0 | 0 |
| The Palace | County of Calhoun | 60 | 0 | 0 |
| Riverfront Cafe | County of Calhoun | 60 | 0 | 0 |
| Mc Kay's Tavern | County of Calhoun | 50 | 0 | 0 |
| Club Calhoun | County of Calhoun | 50 | 0 | 0 |
| Knights Of St Columbus Hall | County of Calhoun | 25 | 0 | 0 |
| Summit Grove Presbyterian Chur | County of Calhoun | 25 | 0 | 0 |
| Summit Grove Church Of Nazaren | County of Calhoun | 25 | 0 | 0 |
| Waldren Bldg | County of Calhoun | 25 | 0 | 0 |
| Hillcrest Holiness Assn | County of Calhoun | 25 | 0 | 0 |
| St Michaels Roman Catholic Chu | County of Calhoun | 25 | 0 | 0 |
| St Agnes Roman Catholic Church | County of Calhoun | 25 | 0 | 0 |
| Church Of Christ In Mozier | County of Calhoun | 25 | 0 | 0 |
| Christian Church Of Mozier | County of Calhoun | 25 | 0 | 0 |
| Belleview Methodist Church | County of Calhoun | 25 | 0 | 0 |
| Indian Creek Church Of Christ | County of Calhoun | 25 | 0 | 0 |
| Michael Tavern | County of Calhoun | 25 | 0 | 0 |
| James Hodgkinson | County of Calhoun | 25 | 0 | 0 |
| Belleview Community Church | County of Calhoun | 25 | 0 | 0 |
| Wood Duck | County of Calhoun | 25 | 0 | 0 |
| Frontier Campground | County of Calhoun | 25 | 0 | 0 |
| Alton Woodriver Sportsman's Cl | County of Calhoun | 25 | 0 | 0 |
| Hadley Landing # 1 & 2 Access | County of Calhoun | 25 | 0 | 0 |
| Rip Rap Landing Access | County of Calhoun | 25 | 0 | 0 |
| Clendenny Grocery | County of Calhoun | 25 | 0 | 0 |
| Klass Store | County of Calhoun | 25 | 0 | 0 |
| Richter Fish Market Grocery | County of Calhoun | 25 | 0 | 0 |
| The Rite Spot | County of Calhoun | 25 | 0 | 0 |
| Kinders Restaurant | County of Calhoun | 25 | 0 | 0 |
| Lamarshs Drive Inn | County of Calhoun | 25 | 0 | 0 |
| Crossroads Tavern | County of Calhoun | 25 | 0 | 0 |
| Summit Grove Presbyterian Chur | County of Calhoun | 25 | 0 | 0 |
| Alton Woodriver Sportsmans Clb | County of Calhoun | 25 | 0 | 0 |
| Hadley Landing (brussels) | County of Calhoun | 25 | 0 | 0 |
| Klass Store | County of Calhoun | 25 | 0 | 0 |
| Richter Fish Market Grocery | County of Calhoun | 25 | 0 | 0 |
| The Rite Spot | County of Calhoun | 25 | 0 | 0 |
| Rip Rap Landing Access | County of Calhoun | 25 | 0 | 0 |
| Crossroads Tavern | County of Calhoun | 25 | 0 | 0 |
| Klaas Feed Mill | County of Calhoun | 25 | 0 | 0 |
| Lehrs Service Station | County of Calhoun | 25 | 0 | 0 |
| Jersey County Farm Supply | County of Calhoun | 25 | 0 | 0 |
| J & K Products | County of Calhoun | 25 | 0 | 0 |
| Quiller Kawasaki | County of Calhoun | 25 | 0 | 0 |
| St Josephs Roman Catholic Chur | County of Calhoun | 25 | 0 | 0 |
| Indian Creek Church Of Christ | County of Calhoun | 25 | 0 | 0 |
| Waldren Bldg | County of Calhoun | 25 | 0 | 0 |
| St Josephs Roman Catholic Chur | County of Calhoun | 25 | 0 | 0 |
| Summit Grove Church Of Nazaren | County of Calhoun | 25 | 0 | 0 |
| Hillcrest Holiness Assn | County of Calhoun | 25 | 0 | 0 |
| St Michaels Roman Catholic Chu | County of Calhoun | 25 | 0 | 0 |
| St Agnes Roman Catholic Church | County of Calhoun | 25 | 0 | 0 |
| Church Of Christ In Mozier | County of Calhoun | 25 | 0 | 0 |
| Christian Church Of Mozier | County of Calhoun | 25 | 0 | 0 |
| Belleview Methodist Church | County of Calhoun | 25 | 0 | 0 |
| Belleview Community Church | County of Calhoun | 25 | 0 | 0 |
| Lamarshs Drive Inn | County of Calhoun | 25 | 0 | 0 |
| Klaas Feed Mill | County of Calhoun | 25 | 0 | 0 |
| Lehrs Service Station | County of Calhoun | 25 | 0 | 0 |
| Jersey County Farm Supply | County of Calhoun | 25 | 0 | 0 |
| J & K Products | County of Calhoun | 25 | 0 | 0 |
| Quiller Kawasaki | County of Calhoun | 25 | 0 | 0 |