Arizona Water Quality
765 water systems serving 7,158,542 people. 54,459 total violations on record.
Safety Grade Distribution
A
95
12%
B
44
6%
C
454
59%
D
95
12%
F
77
10%
765
Water Systems
7,158,542
Population Served
54,459
Total Violations
3,962
Health-Based
Most Contaminated Systems
BULLHEAD CITY MOHAVE
36,330 served2390 violations2359 recent
D
BIG PARK WATER COMPANY
7,392 served1312 violations622 recent
F
PUEBLO DEL SOL WATER COMPANY
12,804 served1001 violations405 recent
D
FOOTHILLS WATER AND SEWER LLC
32,425 served715 violations371 recent
C
GILBERT, TOWN OF
247,600 served526 violations344 recent
C
WELLTON TOWN OF
3,000 served591 violations334 recent
F
FLAGSTAFF CITY OF
76,960 served351 violations320 recent
C
GW SANTA CRUZ WATER CO
84,000 served337 violations317 recent
C
DUNCAN TOWN OF
605 served458 violations311 recent
F
APACHE JUNCTION WATER DISTRICT
15,610 served352 violations245 recent
D
Cleanest Water Systems
TEMPE CITY OF
165,000 served17 violations
A
ARIZONA WATER CO - APACHE JUNCTION
62,055 served2 violations
A
ORO VALLEY WATER UTILITY
42,316 served287 violations
A
SURPRISE CITY OF - MOUNTAIN VISTA
40,007 served492 violations
A
EPCOR - SUN CITY
38,016 served7 violations
A
DESERT OASIS
23,963 served20 violations
A
CHEROKEE WATER SYSTEM
18,415 served0 violations
A
SAHUARITA WATER COMPANY
18,178 served5 violations
A
VAIL WATER COMPANY
17,500 served15 violations
A
ARIZONA WATER CO - OVERGAARD
13,797 served4 violations
A
Largest Water Systems in Arizona
| Water System | Grade | Population | Violations |
|---|---|---|---|
| PHOENIX CITY OF | C | 1,695,000 | 8 |
| TUCSON CITY OF | C | 732,906 | 138 |
| MESA CITY OF | C | 466,000 | 111 |
| GILBERT, TOWN OF | C | 247,600 | 526 |
| CHANDLER CITY OF | C | 247,328 | 340 |
| SCOTTSDALE CITY OF | C | 241,361 | 39 |
| GLENDALE CITY OF | C | 234,766 | 51 |
| PEORIA CITY OF | C | 187,676 | 267 |
| TEMPE CITY OF | A | 165,000 | 17 |
| ARIZONA WATER CO - PINAL VALLEY | C | 134,432 | 44 |
| EPCOR - AGUA FRIA | D | 127,718 | 357 |
| CITY OF YUMA | F | 103,264 | 160 |
| QUEEN CREEK TOWN OF | C | 95,502 | 20 |
| EPCOR - SAN TAN | C | 87,435 | 72 |
| GW SANTA CRUZ WATER CO | C | 84,000 | 337 |
| AVONDALE CITY OF | C | 83,001 | 20 |
| FLAGSTAFF CITY OF | C | 76,960 | 351 |
| ARIZONA WATER CO - APACHE JUNCTION | A | 62,055 | 2 |
| TOWN OF PRESCOTT VALLEY | C | 57,048 | 40 |
| LAKE HAVASU CITY OF | C | 54,610 | 30 |
Contaminants in Arizona
Cities in Arizona
PHOENIX(44)TUCSON(115)MESA(2)EL MIRAGE(20)GILBERT(5)CHANDLER(5)SCOTTSDALE(8)PEORIA(4)TEMPE(4)YUMA(20)MARICOPA(39)SAN TAN VALLEY(4)QUEEN CREEK(2)FLAGSTAFF(13)AVONDALE(1)BUCKEYE(14)LITCHFIELD PARK(7)SURPRISE(6)DEWEY(2)SIERRA VISTA(12)LAKE HAVASU CITY(2)PRESCOTT(20)GOODYEAR(2)KINGMAN(7)BULLHEAD CITY(10)ORO VALLEY(3)SAN LUIS(1)SAHUARITA(4)PAYSON(24)FORT MOHAVE(2)COTTONWOOD(9)HOLLYWOOD(4)NOGALES(4)SAFFORD(3)GREEN VALLEY(1)SUN LAKES(2)DOUGLAS(5)CHEROKEE(4)MARANA(6)GRAND CANYON(3)DAVIS-MONTHAN AFB(1)GLENDALE(18)VAIL(7)SHOW LOW(4)FLORENCE(3)ELOY(3)CHOCTAW(4)APACHE JUNCTION(2)DRAGOON(1)DES PERES(29)SOMERTON(1)PINETOP(5)PAGE(2)SEDONA(16)WILLIAMS(6)CAVE CREEK(3)GOLDEN VALLEY(3)WICKENBURG(5)WINSLOW(1)TOLLESON(1)LUKE AFB(1)PINE(4)GLOBE(3)CAMP VERDE(9)ATMORE(1)BENSON(3)HOLBROOK(3)SNOWFLAKE(1)CLARKDALE(3)CHINO VALLEY(7)TAYLOR(3)EAGAR(2)PIMA(3)AJO(4)CAREFREE(1)SAINT JOHNS(1)PRESCOTT VALLEY(3)WILLCOX(1)QUARTZSITE(2)BAGDAD(1)WELLTON(2)MAYER(7)CHANDLER HEIGHTS(1)DOLAN SPRINGS(1)ASH FORK(1)KEARNY(4)LAKESIDE(8)GILA BEND(2)HUMBOLDT(1)MOHAVE VALLEY(3)SPRINGERVILLE(1)PAULDEN(1)HAPPY JACK(1)CONGRESS(1)JOSEPH CITY(1)FOREST LAKES(1)PETRIFIED FOREST(1)LITTLEFIELD(8)MORENCI(1)TOMBSTONE(1)