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Water quality report

Ft Defiance, AZ
water quality

Drinking water across Ft Defiance’s community water systems, from EPA public records.

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100
Excellent
City-wide average score

83

Systems serving this city

2

With PFAS detected (UCMR5)

0

Above an EPA PFAS limit

0

Unresolved health violations

Across all community water systems EPA records map to Ft Defiance. PFAS figures are from EPA UCMR5 (2023–25) monitoring; not every system was sampled.

Community water systems serving Ft Defiance

Farmington Rural-Shiprock-Beclabito NTUA~15,233 people served 100› Fort Defiance-Window Rock-St Michaels NTUA~12,869 people served 100› Chinle-Many Farms-Del Muerto NTUA~8,458 people served 100› Pinon-District 4 NTUA~5,195 people served 100› Mariano Lake-Pinedale-Church Rock NTUA~4,562 people served 100› Crownpoint-Littlewater-Three Mile Point NTUA~3,950 people served 100› Ganado-Burnside-Cornfield-Steamboat NTUA~3,947 people served 98› Kayenta NTUA~3,844 people served 100› Leupp-Birdsprings-Tolani Lake NTUA~2,100 people served 100› Bread Springs-Chichiltah NTUA~2,066 people served 100› Sweetwater NTUA~2,014 people served 100› Sanostee-Tocito NTUA~1,953 people served 100› New Lands NTUA~1,905 people served 100› Twin Lakes NTUA~1,833 people served 100› Tohatchi-Mexican Springs-Twin Lakes NTUA~1,669 people served 100› Lukachukai NTUA~1,659 people served 100› Defiance NTUA~1,659 people served 100› Red Rock NTUA~1,652 people served 100› Thoreau West-John Willie Camp-Baca NTUA~1,611 people served 100› Kaibeto NTUA~1,590 people served 100› Aneth NTUA~1,481 people served 100› Inscription House-Navajo Mountain NTUA~1,368 people served 100› Cottonwood-Tselani NTUA~1,334 people served 100› Chilchinbeto NTUA~1,276 people served 100› Oljato NTUA~1,276 people served 100› Tsaile-Dine College NTUA~1,190 people served 100› Naschitti-Bisola NTUA~1,173 people served 100› Shonto Junction NTUA~1,146 people served 100› Tonalea-Red Lake NTUA~1,146 people served 100› Carson-Huerfano NTUA~1,142 people served 100› LeChee NTUA~1,115 people served 100› Ojo Encino North NTUA~1,108 people served 100› Jeddito NTUA~1,105 people served 100› Dennehotso NTUA~1,040 people served 100› Rock Point NTUA~1,029 people served 100› Houck-Querino Canyon NTUA~1,023 people served 100› Red Mesa NTUA~1,023 people served 100› Hard Rock NTUA~982 people served 100› Klagetoh NTUA~971 people served 100› Casamero Lake-Smith Lake NTUA~906 people served 100› Toadlena NTUA~903 people served 100› Round Rock NTUA~876 people served 100› Tsa Yah Toh NTUA~865 people served 100› Nazlini NTUA~862 people served 100› Narbona Pass NTUA~862 people served 100› Sawmill NTUA~838 people served 100› Iyanbito NTUA~797 people served 100› Kinlichee NTUA~787 people served 100› Nageezi NTUA~763 people served 100› Red Valley North NTUA~756 people served 100› Teec Nos Pos NTUA~752 people served 100› Standing Rock NTUA~739 people served 100› Cove NTUA~728 people served 100› Crystal NTUA~715 people served 100› Coyote Canyon-Bass Lake NTUA~622 people served 100› Newcomb NTUA~602 people served 100› White Rock-Lake Valley NTUA~492 people served 100› Dzilth-Na-O-Dith-Hle NTUA~462 people served 100› Rough Rock NTUA~455 people served 100› Montezuma Creek NTUA~424 people served 100›

Ft Defiance water FAQ

How is Ft Defiance's water quality scored?

PurityRadar computes a 0–100 score from public EPA records for the community water systems serving Ft Defiance. The city-wide figure shown is the average of those systems.

Where does the data come from?

EPA SDWIS — the federal Safe Drinking Water Information System — covering active community water systems and their health-based violations. Every figure traces back to that public record.

Is this a substitute for testing my tap?

No. System-level data can't account for your home's own plumbing (lead service lines, fixtures). For health decisions, test your tap with a certified lab and confirm with your utility.

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