We found 57 public water systems that could serve the same population as Southwest City (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Mc Donald Co Pwsd 1 | County of Mcdonald | 2,481 | 0 | 10 |
| Anderson | Anderson | 1,961 | 0 | 4 |
| Liberty Water - Noel | Noel | 1,832 | 0 | 2 |
| Mc Donald Co Pwsd 2 | County of Mcdonald | 1,300 | 0 | 1 |
| Goodman | Goodman | 1,250 | 0 | 5 |
| Tyson Foods Inc | County of Mcdonald | 1,200 | 0 | 0 |
| Pineville | Pineville | 791 | 0 | 47 |
| Simmons Foods Inc | County of Mcdonald | 700 | 0 | 10 |
| Mc Donald Co Pwsd 3 | County of Mcdonald | 600 | 0 | 57 |
| Lanagan | Lanagan | 420 | 0 | 116 |
| Elk River Floats & Campground | County of Mcdonald | 400 | 0 | 22 |
| Buffalo Creek Baptist Church | Anderson | 400 | 0 | 20 |
| Rocky Comfort Elem School | Rocky Comfort | 230 | 0 | 0 |
| Chicks Phillip 66 & Rest | Chicks Phillip | 200 | 0 | 0 |
| Sundancer Homes Inc. | Sundancer Homes | 140 | 0 | 0 |
| White Rock School | White Rock Sch | 130 | 0 | 0 |
| Rocky Comfort Store & Cafe | Rocky Comfort | 105 | 0 | 0 |
| Longview Cafe | County of Mcdonald | 100 | 0 | 0 |
| Ian's Cove Restaurant | County of Mcdonald | 100 | 0 | 0 |
| Connie's Country Kitchen | Connies Country | 75 | 0 | 0 |
| Ginger Blue Retreat | Ginger Blue Res | 75 | 0 | 0 |
| Sky Blue Water Inc | County of Mcdonald | 75 | 0 | 0 |
| New Style Homes Inc | New Style Homes | 70 | 0 | 0 |
| Mo Ark Apartments | County of Mcdonald | 64 | 0 | 0 |
| Victory Road Church | Anderson | 60 | 0 | 0 |
| Twin Sugar Cafe | Twin Sugar Cafe | 60 | 0 | 0 |
| Simmons Hatchery | County of Mcdonald | 54 | 0 | 0 |
| Legends Restaurant And Bar | County of Mcdonald | 50 | 0 | 0 |
| Eagles Nest Campground | County of Mcdonald | 50 | 0 | 0 |
| Bee Bluff Grocery & Cafe | County of Mcdonald | 50 | 0 | 0 |
| Fletcher's Dariette | Fletcher Dariet | 50 | 0 | 0 |
| Holden Industries | County of Mcdonald | 45 | 0 | 0 |
| Country Market | Coopers Country | 30 | 0 | 0 |
| Shobes Fina | Shobes Fina | 30 | 0 | 0 |
| Longview Grocery & Supply | County of Mcdonald | 30 | 0 | 0 |
| Tarsco Bolted Tank | County of Mcdonald | 30 | 0 | 0 |
| Shady Beach Campground | County of Mcdonald | 28 | 0 | 0 |
| Elk O Vue River Park Mhp | County of Mcdonald | 28 | 0 | 0 |
| Elk River Cottages | Elk River Cotta | 26 | 0 | 0 |
| The Filling Station | County of Mcdonald | 25 | 0 | 0 |
| Dass Liquor | County of Mcdonald | 25 | 0 | 0 |
| Butts Mhp | Butts Mhp | 25 | 0 | 0 |
| Two Sons Campground | County of Mcdonald | 25 | 0 | 0 |
| Mary Deans Restaurant | County of Mcdonald | 25 | 0 | 0 |
| Kings C Store | County of Mcdonald | 25 | 0 | 0 |
| Big Rock Camp | Macks Big Rock | 25 | 0 | 0 |
| Tiff Store | County of Mcdonald | 25 | 0 | 0 |
| Patterson Heights Baptist Church | Anderson | 25 | 0 | 0 |
| Splitlog Baptist Church | Splitlog Baptis | 25 | 0 | 0 |
| T & R Southwestern Cafe | County of Mcdonald | 25 | 0 | 0 |
| New Life Fellowship Church | County of Mcdonald | 25 | 0 | 0 |
| The Mill | County of Mcdonald | 25 | 0 | 0 |
| Spring Lakes Village | County of Mcdonald | 25 | 0 | 0 |
| Maverick Water Llc | Noel | 25 | 0 | 0 |
| Gallery Graphics Inc | County of Mcdonald | 25 | 0 | 0 |
| Indian Summer Rv Park | County of Mcdonald | 25 | 0 | 0 |
| Four Aces | County of Mcdonald | 25 | 0 | 0 |