We found 77 public water systems that could serve the same population as Largo Water Department (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Pinellas County Utilities | Clearwater | 426,877 | 37 | 2 |
| St Petersburg, City Of | Odessa | 300,075 | 40 | 0 |
| Clearwater Water System | Clearwater | 110,000 | 80 | 6 |
| Pinellas Park Water Dept | Pinellas Park | 48,939 | 37 | 1 |
| Dunedin Water System | Dunedin | 40,093 | 9 | 4 |
| Tarpon Springs Water System | Tarpon Springs | 30,415 | 103 | 11 |
| Safety Harbor Water Dept | Safety Harbor | 16,473 | 38 | 5 |
| Oldsmar Water System | Oldsmar | 14,731 | 7 | 2 |
| Gulfport Water System | Gulfport | 12,600 | 37 | 4 |
| Belleair Water Plant | Belleair | 5,299 | 0 | 16 |
| Innisbrook Resort And Golf Club | Palm Harbor | 1,400 | 0 | 5 |
| Lake Tarpon Mobile Home Villag | Palm Harbor | 1,285 | 0 | 9 |
| Belleview Biltmore Hotel | County of Pinellas | 800 | 0 | 0 |
| Echelon At The Reserve Wtp | County of Pinellas | 502 | 0 | 0 |
| Countryside Christian Center | County of Pinellas | 500 | 0 | 0 |
| Tarpon Springs Country Club | County of Pinellas | 500 | 0 | 0 |
| Dunedin Assembly Of God | Dunedin | 400 | 0 | 0 |
| Southern Comfort Mhp | Clearwater | 368 | 0 | 17 |
| Berea Baptist Church | County of Pinellas | 300 | 0 | 0 |
| Unioon St United Meth Ch | County of Pinellas | 300 | 0 | 0 |
| Boulevard Estates | Clearwater | 297 | 0 | 0 |
| South Gate Home Owners, Inc. | Clearwater | 275 | 0 | 0 |
| Alcove Mobile Home Park | County of Pinellas | 256 | 0 | 0 |
| Joyland | County of Pinellas | 250 | 0 | 0 |
| Suncoast Bible Church | County of Pinellas | 250 | 0 | 0 |
| Lake Tarpon Church Of Christ | County of Pinellas | 200 | 0 | 0 |
| Skylark Mobile Home Park | County of Pinellas | 168 | 0 | 0 |
| Calvary Assembly Of God | County of Pinellas | 150 | 0 | 0 |
| Camp Soule(boy Scouts Of Amer) | Clearwater | 150 | 0 | 0 |
| Dan Able | County of Pinellas | 150 | 0 | 0 |
| September Cocktail Lounge | County of Pinellas | 150 | 0 | 0 |
| Stauffer Chemical Co | Tarpon Springs | 130 | 0 | 0 |
| Camp Calusa | County of Pinellas | 120 | 0 | 0 |
| Greenleaf Forest Apts | County of Pinellas | 110 | 0 | 0 |
| Reorg Church Latter Day Saints | County of Pinellas | 100 | 0 | 0 |
| John M Weeks Inc. | County of Pinellas | 100 | 0 | 0 |
| St Alfred's Episcopal Church | Dunedin | 100 | 0 | 0 |
| Hudson Oil Comp | Pinellas Park | 100 | 0 | 0 |
| Sail Harbor Marina | County of Pinellas | 100 | 0 | 0 |
| Skip's Lounge | Skips Lounge | 75 | 0 | 0 |
| Evangelical Free Church | Evangelical Fre | 75 | 0 | 0 |
| Town And Country Preschool | County of Pinellas | 60 | 0 | 0 |
| National Pools Of Largo | Clearwater | 60 | 0 | 0 |
| National Cahs Register Corp | Clearwater | 60 | 0 | 0 |
| Church Of God | Palm Harbor | 50 | 0 | 0 |
| Hillside Tp | County of Pinellas | 50 | 0 | 0 |
| Sanitary Dash | County of Pinellas | 50 | 0 | 0 |
| Moonglow Trailer Park | County of Pinellas | 46 | 0 | 0 |
| Rainbow Motel | County of Pinellas | 40 | 0 | 0 |
| Pinellas Concrete Products Inc | Tarpon Springs | 40 | 0 | 0 |
| Sun Groves | County of Pinellas | 33 | 0 | 0 |
| Humphries Groves | County of Pinellas | 33 | 0 | 0 |
| Metco Development Corp | Clwr | 32 | 0 | 0 |
| Engraving Design Inc | County of Pinellas | 30 | 0 | 0 |
| Watergate Motel | County of Pinellas | 30 | 0 | 0 |
| Mike Sakelson Auto Service Inc | K | 30 | 0 | 0 |
| International Broadcasters Inc | Seminole | 30 | 0 | 0 |
| Knight's Dental Studio | County of Pinellas | 30 | 0 | 0 |
| Mary Shannon Restaurant | County of Pinellas | 30 | 0 | 0 |
| Mike Phillips & Chuck Gurr | Tarpon Springs | 25 | 0 | 0 |
| Dr R E Clark | County of Pinellas | 25 | 0 | 0 |
| Come And Get It | Largo | 25 | 0 | 0 |
| Richard Bible | County of Pinellas | 25 | 0 | 0 |
| Primo Sandwiches | County of Pinellas | 25 | 0 | 0 |
| Karl & Emmy Ruebel | Tarpon Springs | 25 | 0 | 0 |
| Everybody's Tabernacle | Clearwater | 25 | 0 | 0 |
| Singleton's Shrimp Boat | County of Pinellas | 25 | 0 | 0 |
| Grace Presbyteran Church | County of Pinellas | 25 | 0 | 0 |
| Buster's Garage | Palm Harbor | 25 | 0 | 0 |
| General Telephone Company | Tarpon Springs | 25 | 0 | 0 |
| Humphries Groves Inc | Safety Harbor | 25 | 0 | 0 |
| Marco Motel Court | County of Pinellas | 25 | 0 | 0 |
| Sailport Marina | County of Pinellas | 25 | 0 | 0 |
| Dr Jo Anne Whitaker | County of Pinellas | 25 | 0 | 0 |
| Countryside Chapel | County of Pinellas | 25 | 0 | 0 |
| Wall Springs Motel | County of Pinellas | 18 | 0 | 0 |
| Component General | Pinellas Park | 10 | 0 | 0 |