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Navajo Nation Water Quality
170 public water systems serving 167,275 people.
Water Systems
170
Total Violations
29,535
Violation Rate
100%
PFAS Detection
100%
13 of 13 tested
Largest Water Systems
Farmington Rural-Shiprock-Beclabito NTUA
Ft Defiance, NN · 15,233 served
Fort Defiance-Window Rock-St Michaels NTUA
Ft Defiance, NN · 12,869 served
Chinle-Many Farms-Del Muerto NTUA
Ft Defiance, NN · 8,458 served
Tuba City NTUA
Fort Defiance, NN · 6,276 served
Pinon-District 4 NTUA
Ft Defiance, NN · 5,195 served
Dilkon-Indian Wells-Greasewood-White Cone NTUA
Fort Defiance, NN · 4,986 served
Mariano Lake-Pinedale-Church Rock NTUA
Ft Defiance, NN · 4,562 served
Crownpoint-Littlewater-Three Mile Point NTUA
Ft Defiance, NN · 3,950 served
Ganado-Burnside-Cornfield-Steamboat NTUA
Ft Defiance, NN · 3,947 served
Kayenta NTUA
Ft Defiance, NN · 3,844 served
Leupp-Birdsprings-Tolani Lake NTUA
Ft Defiance, NN · 2,100 served
Bread Springs-Chichiltah NTUA
Ft Defiance, NN · 2,066 served
Tuba City Boarding School BIA
Tuba City, NN · 2,040 served
Sweetwater NTUA
Ft Defiance, NN · 2,014 served
Sanostee-Tocito NTUA
Ft Defiance, NN · 1,953 served
New Lands NTUA
Ft Defiance, NN · 1,905 served
Twin Lakes NTUA
Ft Defiance, NN · 1,833 served
Tohatchi-Mexican Springs-Twin Lakes NTUA
Ft Defiance, NN · 1,669 served
Lukachukai NTUA
Ft Defiance, NN · 1,659 served
Defiance NTUA
Ft Defiance, NN · 1,659 served
Most Violations
#1 St Michael Indian School St Michaels
1,202 #2 White Post Mission NTUA Ft Defiance
1,145 #3 Alamo-Alamo Community Alamo
899 #4 Canoncito Canoncito
898 #5 Red Mesa Public Schools Teec Nos Pos
857 #6 Alamo-Alamo Springs Alamo
820 #7 Round Rock Elementary School Teec Nos Pos
801 #8 Pinehill Community and School Tonalea
726 #9 Ramah-Mountain View RNUA Pinehill
666 #10 Tohatchi Public School Tohatchi
663 #11 Alamo-Chavez Springs Alamo
599 #12 Monument Valley Mission - Hospital Monument Valley
578 #13 Ramah-Sunset Valley RNUA Pinehill
553 #14 Ramah-Ramah Rural RNUA Pinehill
538 #15 Gouldings Trading Post and Lodge Monument Valley
432 Counties in Navajo Nation
County NN001
51 systems · 55,505 served
· 9,921 violations
County NN031
29 systems · 27,501 served
· 3,615 violations
County NN017
27 systems · 26,234 served
· 4,391 violations
County NN045
19 systems · 25,958 served
· 2,250 violations
County NN005
22 systems · 20,758 served
· 1,970 violations
County NN037
13 systems · 6,907 served
· 2,385 violations
County NN006
4 systems · 1,681 served
· 2,483 violations
County NN053
4 systems · 1,623 served
· 2,428 violations
County NN043
1 systems · 1,108 served
· 92 violations