We found 61 public water systems in Kay county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Ponca City Mun Water | County of Kay | 27,155 | 40 | 26 |
| Blackwell Municipal Authority | Blackwell | 7,668 | 46 | 37 |
| Tonkawa | County of Kay | 3,299 | 0 | 33 |
| City Of Newkirk | County of Kay | 2,243 | 0 | 30 |
| Kay Co Rwd #1 | County of Kay | 1,765 | 0 | 6 |
| Kay Co Rwd #3 | County of Kay | 1,000 | 0 | 3 |
| Blackwell Rw Corp | County of Kay | 920 | 0 | 22 |
| Kay Co Rwd #5 (dale Water Corp) | County of Kay | 765 | 0 | 10 |
| Oklahoma Water Co | County of Kay | 500 | 0 | 0 |
| Braman | County of Kay | 445 | 0 | 0 |
| Kaw City Water Authority | County of Kay | 372 | 0 | 47 |
| Ponca Tribe Of Oklahoma | County of Kay | 360 | 0 | 74 |
| Big Chief Rv Park And Cabins | County of Kay | 250 | 0 | 8 |
| Braman | County of Kay | 244 | 0 | 15 |
| Kay County Rwd # 4 | County of Kay | 190 | 0 | 24 |
| Tonkawa Tribe Of Indians Of Oklahoma | County of Kay | 150 | 0 | 44 |
| Meadowbrook Village Mhp | County of Kay | 150 | 0 | 9 |
| Narconon Chilocco Center | County of Kay | 135 | 0 | 0 |
| Continental Carbon Co | County of Kay | 126 | 0 | 0 |
| North Country Mhp | County of Kay | 120 | 0 | 0 |
| Big Country Mhp | County of Kay | 120 | 0 | 0 |
| Lakeview Campground And Boat Storage | County of Kay | 108 | 0 | 0 |
| Osage Oaks Tp C/o F.childers | County of Kay | 100 | 0 | 0 |
| Kaw Water Inc | County of Kay | 90 | 0 | 0 |
| Continental Carbon Co | County of Kay | 86 | 0 | 0 |
| East Lake Water Co | County of Kay | 77 | 0 | 0 |
| Trailer Village | County of Kay | 73 | 0 | 0 |
| State Line Tavern | County of Kay | 60 | 0 | 0 |
| Lakeview Water System Inc | County of Kay | 60 | 0 | 0 |
| Ponca City Rv Park | County of Kay | 58 | 0 | 0 |
| Kay County Rwd #2 | County of Kay | 50 | 0 | 0 |
| Wheatheart Truck Stop | County of Kay | 50 | 0 | 0 |
| Phs Indian Health Ctr | County of Kay | 50 | 0 | 0 |
| Stagecoach Restaurant | County of Kay | 50 | 0 | 0 |
| Stollpies Llc | County of Kay | 50 | 0 | 0 |
| Witco | County of Kay | 50 | 0 | 0 |
| Ok Rw Inc | County of Kay | 30 | 0 | 0 |
| Hideaway Rv Park | Tonkawa | 27 | 0 | 0 |
| Pure Water And Equip Sales | County of Kay | 26 | 0 | 0 |
| Quality Water | County of Kay | 26 | 0 | 0 |
| American Legion Childrens Home | County of Kay | 26 | 0 | 0 |
| Webbs | County of Kay | 26 | 0 | 0 |
| Nutrition For Life | County of Kay | 25 | 0 | 0 |
| Coe Coon Creek (kaw) | County of Kay | 25 | 0 | 0 |
| The Hideout (nightclub) | County of Kay | 25 | 0 | 0 |
| Coe Sarge Creek (kaw) | County of Kay | 25 | 0 | 0 |
| Hillside Cottages | County of Kay | 25 | 0 | 0 |
| Loves Country Store #213 | County of Kay | 25 | 0 | 0 |
| Champlin Truck Stop | County of Kay | 25 | 0 | 0 |
| Cardon's | County of Kay | 25 | 0 | 0 |
| Big Spring | County of Kay | 25 | 0 | 0 |
| Scottys Corral | County of Kay | 25 | 0 | 0 |
| Coe Pioneer Park | County of Kay | 25 | 0 | 0 |
| Coe Kaw Overlook | County of Kay | 25 | 0 | 0 |
| Coe Mcfadden Cove (kaw) | County of Kay | 25 | 0 | 0 |
| Coe Project Office (kaw) | County of Kay | 25 | 0 | 0 |
| Coe Washunga Bay (kaw) | County of Kay | 25 | 0 | 0 |
| Valentine's Ii Inc. | County of Kay | 25 | 0 | 0 |
| Coe Bear Creek (kaw) | County of Kay | 25 | 0 | 0 |
| Mccord Senior Citizen Center | County of Kay | 24 | 0 | 0 |
| White Eagle Indian Health | County of Kay | 20 | 0 | 0 |