We found 61 public water systems in Marshall county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Marshall-polk Rural Water System | Warren | 3,295 | 0 | 3 |
| Warren | Warren | 1,567 | 0 | 13 |
| Kittson-marshall Rural Water System | Donaldson | 952 | 0 | 5 |
| Stephen | Stephen | 659 | 0 | 7 |
| Argyle | Argyle | 642 | 0 | 2 |
| Newfolden | Newfolden | 374 | 0 | 1 |
| Alvarado | Alvarado | 366 | 0 | 1 |
| Oslo | Oslo | 310 | 0 | 2 |
| Middle River | Middle River | 304 | 0 | 3 |
| Grygla | Grygla | 222 | 0 | 5 |
| Viking | Viking | 105 | 0 | 0 |
| Silver Creek Lutheran Church | County of Marshall | 100 | 0 | 0 |
| Florian Park | County of Marshall | 100 | 0 | 0 |
| Assumption Church Of Florian | County of Marshall | 100 | 0 | 0 |
| Salem Lutheran Church | County of Marshall | 80 | 0 | 0 |
| Holt | Holt | 80 | 0 | 0 |
| Strandquist | Strandquist | 71 | 0 | 0 |
| Big Woods Lutheran Church | County of Marshall | 50 | 0 | 0 |
| Old Mill State Park | County of Marshall | 50 | 0 | 0 |
| United Lutheran Church | County of Marshall | 50 | 0 | 0 |
| Vega Immanuel Lutheran Church | County of Marshall | 50 | 0 | 0 |
| New Life Community Church | County of Marshall | 25 | 0 | 0 |
| Grygla Trailer Court | County of Marshall | 25 | 0 | 0 |
| Viking Elevator Inc | County of Marshall | 25 | 0 | 0 |
| East Acres Mobile Home Park | County of Marshall | 25 | 0 | 0 |
| Davidson Const - Readymix | County of Marshall | 25 | 0 | 0 |
| Holt Community Center | County of Marshall | 25 | 0 | 0 |
| Bethania Free Lutheran Church | County of Marshall | 25 | 0 | 0 |
| Damman Service Station | County of Marshall | 25 | 0 | 0 |
| Immanuel Lutheran Church | County of Marshall | 25 | 0 | 0 |
| Kollin's Trailer Court | County of Marshall | 25 | 0 | 0 |
| Middle River Mobile Home Park | County of Marshall | 25 | 0 | 0 |
| St Germain Trailer Court | County of Marshall | 25 | 0 | 0 |
| Valley Court | County of Marshall | 25 | 0 | 0 |
| Wagon Wheel Trailer Court | County of Marshall | 25 | 0 | 0 |
| Warren Trailer Coach Park | County of Marshall | 25 | 0 | 0 |
| Wayne's Trailer Park | County of Marshall | 25 | 0 | 0 |
| Thief Lake Wildlife Management Area | County of Marshall | 25 | 0 | 0 |
| Agassiz National Wildlife Refuge | County of Marshall | 25 | 0 | 0 |
| Rainbow Club | County of Marshall | 25 | 0 | 0 |
| Our Saviors Lutheran Church | County of Marshall | 25 | 0 | 0 |
| Grygla Coop Creamery | County of Marshall | 25 | 0 | 0 |
| Old Mill St Pk-well No 1 | County of Marshall | 25 | 0 | 0 |
| School Building | County of Marshall | 25 | 0 | 0 |
| Falls Concrete Supply Inc | County of Marshall | 25 | 0 | 0 |
| Peters Trailer Court | County of Marshall | 25 | 0 | 0 |
| Natures Way 7th Day Sch | County of Marshall | 25 | 0 | 0 |
| Meadowbrook Ballroom | County of Marshall | 25 | 0 | 0 |
| Grygla Truck Station | County of Marshall | 25 | 0 | 0 |
| St Aloysius Catholic Church | County of Marshall | 25 | 0 | 0 |
| Kings Service | County of Marshall | 25 | 0 | 0 |
| Us Post Office | County of Marshall | 25 | 0 | 0 |
| Viking Elementary School | County of Marshall | 25 | 0 | 0 |
| Viking Covenant Church | County of Marshall | 25 | 0 | 0 |
| ZION LUTHERAN CHURCH | County of Marshall | 25 | 0 | 0 |
| Gary | County of Marshall | 25 | 0 | 0 |
| Jeannes Grocery | County of Marshall | 25 | 0 | 0 |
| Old Mill St Pk-well No 2 | County of Marshall | 25 | 0 | 0 |
| Alma Lutheran Church | County of Marshall | 25 | 0 | 0 |
| Gatzke Senior Center And Post Office | County of Marshall | 25 | 0 | 0 |
| Lilac Ridge Trailer Park | County of Marshall | 14 | 0 | 0 |