We found 65 public water systems that could serve the same population as Oldham (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| City Of Arlington | Arlington | 379,370 | 54 | 3 |
| Arlington County | Arlington | 215,000 | 36 | 4 |
| Arlington Water Dept. (mwra) | Arlington | 42,844 | 24 | 5 |
| Arlington Water Dept | Arlington | 14,602 | 56 | 1 |
| Kingbrook I Rural Water System | Arlington | 4,078 | 0 | 3 |
| River Rock Tobacco And Fuel | Arlington | 3,236 | 0 | 5 |
| Kingbrook Ii Rural Water System | Arlington | 2,898 | 0 | 3 |
| Kingbrook Iii Rural Water System | Arlington | 2,738 | 0 | 0 |
| Angel Of The Winds | Arlington | 2,303 | 0 | 231 |
| Arlington | Arlington | 2,230 | 0 | 5 |
| Arlington | Arlington | 1,407 | 0 | 20 |
| Arlington, Village Of | Arlington | 1,350 | 0 | 2 |
| Arlington Water System | Arlington | 1,256 | 0 | 0 |
| Arlington Water Dept | Arlington | 1,250 | 0 | 7 |
| Arlington | Arlington | 915 | 0 | 7 |
| Arlington Waterworks | Arlington | 823 | 37 | 7 |
| ZION EV LUTHERAN CHURCH OF LEEDS | Arlington | 507 | 0 | 3 |
| Arlington, City Of | Arlington | 450 | 0 | 34 |
| Arlington Water Supply | Arlington | 429 | 0 | 1 |
| Mack Molding Company | Arlington | 220 | 0 | 19 |
| Camping On The Battenkill | Arlington | 220 | 0 | 19 |
| Arlington Elementary | Arlington | 200 | 0 | 0 |
| Chaunceys | Arlington | 198 | 0 | 30 |
| Uw Agricultural Research Station Hdqtrs | Arlington | 180 | 0 | 16 |
| Arlington Church | Arlington | 160 | 0 | 5 |
| Arlington | Arlington | 150 | 0 | 25 |
| Oldham | Arlington, Oldham | 133 | 0 | 11 |
| Sinai | Arlington, Sinai | 120 | 0 | 0 |
| Deena Lamp Co Inc | Arlington | 120 | 0 | 0 |
| Spring Lake Colony | Arlington | 120 | 0 | 0 |
| The Arlington | Arlington | 98 | 0 | 0 |
| Arlington Farms Water Company | Arlington | 75 | 0 | 0 |
| Co-op Grill | Arlington | 75 | 0 | 0 |
| West Mountain Inn | Arlington | 74 | 0 | 0 |
| Associated Milk Producers-arlington | Arlington | 70 | 0 | 0 |
| Candlelight Motel | Arlington | 66 | 0 | 0 |
| Sid's Road Runner L L C | Arlington | 60 | 0 | 0 |
| Valhalla Motel | Arlington | 54 | 0 | 0 |
| Arlington Inn/lions Club | Arlington | 50 | 0 | 0 |
| Rockmar Welcome House | Arlington | 50 | 0 | 0 |
| Cutleaf Maples Motel & L | Arlington | 50 | 0 | 0 |
| Arlington Dairy Bar | Arlington | 50 | 0 | 0 |
| Dollar General - Arlington | Arlington | 48 | 0 | 0 |
| Johnson Sales Inc | Arlington | 47 | 0 | 0 |
| Aps Redhawk Water | Arlington | 45 | 0 | 0 |
| Desert Oasis Rv Park | Arlington | 40 | 0 | 0 |
| Arlington Valley Energy Facility | Arlington | 40 | 0 | 0 |
| Lake Poinsett Estates | Arlington | 36 | 0 | 0 |
| Quadra Tek | Arlington | 35 | 0 | 0 |
| Jonathons Table | Arlington | 35 | 0 | 0 |
| Prairie Inn Supper Club | Arlington | 32 | 0 | 0 |
| Stillaguamish Natural Resources | Arlington | 31 | 0 | 0 |
| Thirstys Bar And Grill | Arlington | 29 | 0 | 0 |
| Washington Co District 14 | Arlington | 26 | 0 | 0 |
| Candlelight Motel | Arlington | 25 | 0 | 0 |
| Sunderland Snack Bar | Arlington | 25 | 0 | 0 |
| Washington Co District 14 | Arlington | 25 | 0 | 0 |
| St Paul Lutheran School | Arlington | 25 | 0 | 0 |
| Marshall Nurseries | Arlington | 25 | 0 | 0 |
| Valhalla Motel | Arlington | 25 | 0 | 0 |
| Little Blue River Lake & Trailer Park | Arlington | 25 | 0 | 0 |
| Little Blue River Lake & Trailer Park | Arlington | 25 | 0 | 0 |
| Mills Motor Inn | Arlington | 4 | 0 | 0 |
| Arlington School | Arlington | 0 | 0 | 0 |
| Arlington Outpost | Arlington | 0 | 0 | 0 |