| City of TucsonTucson | 0 | 341 | 140,797 | 0.1% | 732,906 |
| Desert Shores RV MHPTucson | 0 | 24 | 102 | 19% | 220 |
| Mt Lemmon DwidMount Lemmon | 0 | 19 | 4 | 5.5% | 290 |
| GW Ocotillo Water - Valley View AcresRyan Field | 0 | 1 | 63 | 0.5% | 458 |
| Samalayuca Improvement AssocTucson | 0 | 1 | 29 | 1.9% | 150 |
| Metropolitan DwidTucson | 0 | 0 | 5,497 | 0% | 45,570 |
| Community WC of Green ValleyGreen Valley | 0 | 0 | 4,021 | 0% | 22,085 |
| Ray Water Company INCTucson | 0 | 0 | 935 | 0% | 4,495 |
| Marana Dwid - DerringerMarana | 0 | 0 | 696 | 0% | 1,950 |
| Arizona Water Co - AjoAjo | 0 | 0 | 607 | 0% | 2,100 |
| Trails West MHPTucson | 0 | 0 | 449 | 0% | 500 |
| GW Ocotillo Water - Rancho del Sol LindoSilverbell | 0 | 0 | 402 | 0% | 2,782 |
| Marana Municipal - MaranaMarana | 0 | 0 | 398 | 0% | 15,162 |
| Tucson Water Corona de TucsonTucson | 0 | 0 | 366 | 0% | 10,217 |
| Lakewood Estates Water CompanyTucson | 0 | 0 | 260 | 0% | 905 |
| Marana Dwid - CulverMarana | 0 | 0 | 255 | 0% | 709 |
| Cactus Country RV ResortTucson | 0 | 0 | 241 | 0% | 420 |
| Far Horizons MHPTucson | 0 | 0 | 180 | 0% | 258 |
| CS Los Cerros Water Company INCCatalina | 0 | 0 | 179 | 0% | 2,613 |
| GW Ocotillo Water - CatalinaCatalina | 0 | 0 | 174 | 0% | 1,102 |
| Spanish Trail Water CompanyTucson | 0 | 0 | 173 | 0% | 3,822 |
| Arivaca Townsite Water CoopArivaca | 0 | 0 | 165 | 0% | 150 |
| Metropolitan Dwid - Diablo VillageTucson | 0 | 0 | 151 | 0% | 5,542 |
| GW Ocotillo Water - Diamond BellTucson | 0 | 0 | 140 | 0% | 649 |
| Casitas de CastilianTucson | 0 | 0 | 123 | 0% | 167 |
| Catalina VillageTucson | 0 | 0 | 107 | 0% | 107 |
| Rio Vista Mobile Home ParkTucson | 0 | 0 | 104 | 0% | 217 |
| Metropolitan Dwid - E&t SystemTucson | 0 | 0 | 102 | 0% | 880 |
| Mission Palms ApartmentsTucson | 0 | 0 | 97 | 0% | 720 |
| Crossroads Park MHPTucson | 0 | 0 | 93 | 0% | 100 |
| Valle Verde del NorteGreen Valley | 0 | 0 | 78 | 0% | 300 |
| Voyager Water CompanyTucson | 0 | 0 | 76 | 0% | 3,121 |
| Lazy C Water ServiceTucson | 0 | 0 | 69 | 0% | 359 |
| Thim Utility CompanyThree Points | 0 | 0 | 67 | 0% | 310 |
| Halcyon Acres Water Users AssociationTucson | 0 | 0 | 63 | 0% | 215 |
| Rillito Water Users AssocRillito | 0 | 0 | 57 | 0% | 165 |
| Orchard Valley Mobile Home ParkCatalina | 0 | 0 | 52 | 0% | 130 |
| Thim Utility Company 2Tucson | 0 | 0 | 51 | 0% | 445 |
| GW Ocotillo Water - Silverbell WestTucson | 0 | 0 | 48 | 0% | 231 |
| Rancho del Conejo Comm Water CoopAvra Valley | 0 | 0 | 45 | 0% | 900 |
| Thim Water Company 2Tucson | 0 | 0 | 42 | 0% | 247 |
| Desert Paradise MHP LLCTubac | 0 | 0 | 39 | 0% | 90 |
| Saguaro Water CompanyVail | 0 | 0 | 36 | 0% | 3,243 |
| Thim Utility Company - Well 9Three Points | 0 | 0 | 31 | 0% | 254 |
| Wildflower Water CoopThree Points | 0 | 0 | 30 | 0% | 157 |
| Halcyon Acres 2Tucson | 0 | 0 | 29 | 0% | 144 |
| Sierrita Mountain Water CoopTucson | 0 | 0 | 27 | 0% | 258 |
| Siete Casas Joint VentureTucson | 0 | 0 | 26 | 0% | 25 |
| Wells Fargo Water CompanyTucson | 0 | 0 | 20 | 0% | 86 |
| Rincon Mesa LandownersTucson | 0 | 0 | 20 | 0% | 75 |
| Gator Water CompanyTucson | 0 | 0 | 18 | 0% | 29 |
| Worden Water CompanyThree Points | 0 | 0 | 17 | 0% | 60 |
| La Casita Water Company 3Tucson | 0 | 0 | 16 | 0% | 598 |
| Shae Water CompanyAmado | 0 | 0 | 16 | 0% | 54 |
| Sahuarita Village Water CompanySahuarita | 0 | 0 | 13 | 0% | 93 |
| Thim Utility Company - Rancho VistaTucson | 0 | 0 | 9 | 0% | 105 |
| Pantano Water CoopVail | 0 | 0 | 8 | 0% | 156 |
| La Casita Water Company 2Tucson | 0 | 0 | 6 | 0% | 264 |
| La Casita Water Company 1Tucson | 0 | 0 | 3 | 0% | 171 |
| Rancho Tierra Blanca PoaMarana | 0 | 0 | 3 | 0% | 126 |
| Anway Manville Water CompanyAvra Valley | 0 | 0 | 1 | 0% | 550 |
| Tierra Linda HOA Water CompanyTucson | 0 | 0 | 1 | 0% | 258 |
| Oro Valley Water UtilityOro Valley | 0 | 0 | 0 | 0% | 42,316 |
| Usaf Davis Monthan AFBTucson | 0 | 0 | 0 | 0% | 18,640 |
| Sahuarita Water CompanySahuarita | 0 | 0 | 0 | 0% | 18,178 |
| Vail Water CompanyTucson | 0 | 0 | 0 | 0% | 17,500 |
| Flowing Wells Irrigation DistrictTucson | 0 | 0 | 0 | – | 16,000 |
| Green Valley DwidGreen Valley | 0 | 0 | 0 | 0% | 8,687 |
| Quail Creek Water CompanyGreen Valley | 0 | 0 | 0 | 0% | 6,812 |
| Avra Water Coop INCTucson | 0 | 0 | 0 | 0% | 6,685 |
| Oro Valley Water CountrysideOro Valley | 0 | 0 | 0 | 0% | 6,031 |
| Marana Municipal - Hartman VistasMarana | 0 | 0 | 0 | 0% | 5,408 |
| Marana Municipal - Picture RocksMarana | 0 | 0 | 0 | 0% | 5,270 |
| Marana Municipal - Airline LambertMarana | 0 | 0 | 0 | 0% | 4,948 |
| Adoc TucsonTucson | 0 | 0 | 0 | 0% | 4,500 |
| GW Farmers Water Co - ContinentalGreen Valley | 0 | 0 | 0 | 0% | 4,475 |
| Metropolitan Dwid - HubTucson | 0 | 0 | 0 | 0% | 4,252 |
| GW Farmers Water Co - Santa Rita SpringsSahuarita | 0 | 0 | 0 | 0% | 3,235 |
| GW Saguaro Dist Water Co - Las QuintasGreen Valley | 0 | 0 | 0 | 0% | 3,055 |
| Ajo Improvement CompanyAjo | 0 | 0 | 0 | 0% | 2,654 |