We found 17 public water systems that could serve the same population as North Sioux City (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| South Lincoln Rural Water System | Beresford, Worthing | 4,404 | 0 | 29 |
| Clay Rural Water System | Wakonda | 4,395 | 0 | 5 |
| Dakota Dunes Cid | Dakota Dunes | 2,750 | 0 | 3 |
| Beresford | Beresford | 2,005 | 0 | 2 |
| Elk Point | Elk Point | 1,963 | 0 | 41 |
| North Sioux City - Mccook Lake Syste | County of Union | 1,300 | 0 | 0 |
| Clay Rws/south Union | Wakonda | 965 | 0 | 157 |
| Alcester | Alcester | 885 | 0 | 6 |
| Jefferson | Jefferson | 547 | 0 | 37 |
| Sodrac Park | County of Union | 240 | 0 | 0 |
| Riv-r-land Water Company | County of Union | 175 | 0 | 0 |
| Kamp Dakota, Jefferson | County of Union | 150 | 0 | 0 |
| Hoffman Trailer Court | County of Union | 120 | 0 | 0 |
| Sandy Mead Housing Development | County of Union | 70 | 0 | 0 |
| Hoffman Trailer Court | County of Union | 50 | 0 | 0 |
| Barnes Trailer Court | County of Union | 36 | 0 | 0 |
| Mckay Trailer Court | County of Union | 25 | 0 | 0 |