| TOWN OF PRESCOTT VALLEY | 57,048 | 396 | Detected |
| PRESCOTT CITY OF | 42,217 | 616 | Detected |
| COTTONWOOD MUNICIPAL WATER CW1 | 11,023 | 367 | Detected |
| BIG PARK WATER COMPANY | 7,392 | 2,033 | Detected |
| TOWN OF CAMP VERDE UTILITIES | 5,013 | 89 | Detected |
| CLARKDALE MUNICIPAL WATER SYSTEM | 4,920 | 114 | Detected |
| COTTONWOOD MUNICIPAL WATER VV6 | 4,509 | 590 | Detected |
| CORDES LAKES WATER COMPANY | 4,257 | 107 | — |
| ARIZONA WATER CO - RIMROCK | 3,423 | 205 | Detected |
| FREEPORT MCMORAN BAGDAD TOWN | 3,200 | 134 | — |
| COTTONWOOD MUNICIPAL WATER VV2 | 2,893 | 437 | — |
| WICKENBURG RANCH ESTATES | 2,877 | 36 | — |
| CHINO VALLEY TOWN OF | 2,742 | 280 | — |
| MONTEZUMA CASTLE NATIONAL MONUMENT | 2,500 | 25 | — |
| BLACK CANYON CITY WID | 2,437 | 218 | — |
| CHINO MEADOWS II | 2,350 | 154 | — |
| ASH FORK WATER SERVICE | 2,250 | 120 | — |
| COTTONWOOD MUNICIPAL WATER VSF1 | 2,194 | 85 | — |
| DIAMOND VALLEY WATER DISTRICT | 2,000 | 120 | — |
| ADOT MCGUIREVILLE REST AREA | 2,000 | 62 | — |
| ABRA WATER COMPANY | 1,932 | 170 | — |
| CONGRESS DWID | 1,870 | 88 | — |
| CAMP VERDE SCHOOL DIST 28 | 1,810 | 121 | — |
| AWC - VALLEY VISTA | 1,776 | 52 | — |
| OAK CREEK WATER DISTRICT | 1,507 | 431 | — |
| COTTONWOOD MUNICIPAL WATER VV3 | 1,458 | 295 | — |
| MAYER DWID | 1,400 | 330 | — |
| MINGUS UNION HIGH SCHOOL | 1,200 | 452 | — |
| GRANITE OAKS WATER USERS ASSOCIATION | 1,200 | 137 | — |
| BRADSHAW MOUNTAIN VIEW WATER | 1,127 | 158 | — |
| ADOT SUNSET POINT REST AREA | 1,008 | 57 | — |
| CHINO VALLEY HIGH SCHOOL | 960 | 97 | Detected |
| WALDEN MEADOWS COMM COOP | 880 | 37 | — |
| VERDE LAKES WATER - DINKY CREEK | 875 | 190 | — |
| VERDE LAKES WATER - BIG VALLEY | 870 | 203 | — |
| HUMBOLDT WATER SYSTEM | 825 | 239 | — |
| CHINO VALLEY SCHOOL - DEL RIO | 800 | 84 | Detected |
| COTTONWOOD MUNICIPAL WATER VV 1 | 785 | 252 | — |
| YAVAPAI WATER COMPANY | 728 | 186 | — |
| CS PEEPLES VALLEY WATER COMPANY | 658 | 221 | — |
| CS OAK CREEK PUBLIC SERVICE LLC | 650 | 231 | — |
| VIEW MOTEL | 625 | 39 | — |
| PONDEROSA PARK DWID | 602 | 83 | Detected |
| MINGUS WEST WATER SYSTEM | 602 | 29 | — |
| APPALOOSA WATER COMPANY | 600 | 94 | — |
| IMMACULATE CONCEPTION CHURCH | 600 | 19 | — |
| INSCRIPTION CANYON WATER COMPANY | 566 | 76 | — |
| COLDWATER CANYON 1 | 541 | 216 | — |
| YARNELL WATER IMPROVEMENT ASSOCIATION | 515 | 157 | — |
| BRADSHAW WATER COMPANY INC | 510 | 88 | — |