County · Arizona
Apache County, Arizona: drinking water records
This overview covers 29 ZIP codes and 63 community water systems in Apache County. It also stands in for 8 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Fort Defiance-Window Rock-St Michaels Ntua NN0403000 | 12,869 | 420 | 0 | 4 | 1.6 ppb |
| Chinle-Many Farms-Del Muerto Ntua NN0400174 | 8,458 | 60 | 0 | 0 | 1 ppb |
| Eagar Town of AZ0401004 | 4,590 | 360 | 1 | 0 | 1.2 ppb |
| Ganado-Burnside-Cornfield-Steamboat Ntua NN0403001 | 3,947 | 180 | 3 | 0 | 2 ppb |
| St Johns City of AZ0401012 | 3,500 | 60 | 0 | 0 | 0 ppb |
| Sweetwater Ntua NN0400399 | 2,014 | 0 | 0 | 10 | 1.5 ppb |
| Springerville Town of AZ0401013 | 1,972 | 0 | 0 | 13 | 11 ppb |
| Cedar Grove Water Company AZ0401049 | 1,564 | 0 | 0 | 2 | 1.4 ppb |
| Many Farms Community School BIA NN0435008 | 1,506 | 0 | 0 | 1 | 1.4 ppb |
| Alpine Dwid AZ0401001 | 1,030 | 0 | 0 | 1 | 0 ppb |
| Ganado Public Schools NN0400289 | 684 | 120 | 0 | 0 | 3.4 ppb |
| Aspc Apache AZ0401056 | 540 | 0 | 0 | 3 | 5.9 ppb |
| Round Rock Elementary School NN0403024 | 396 | 0 | 0 | 1 | 4.2 ppb |
| Sanders School District AZ0401022 | 350 | 0 | 0 | 7 | 1.5 ppb |
| Wheatfields Ntua NN0400812 | 321 | 0 | 0 | 1 | 1.5 ppb |
| Advance MHP CO0101104 | 175 | 0 | 0 | 1 | 0 ppb |
| Vernon Dwid AZ0401019 | 100 | 0 | 0 | 1 | 0 ppb |
| Kinlichee Staff Housing BIA NN0436014 | 80 | 0 | 0 | 1 | 42 ppb |
| Swan Lake Resort NJ0111007 | 70 | 0 | 0 | 2 | 0 ppb |
| Vernon Valley Water System AZ0401054 | 54 | 0 | 0 | 1 | 2 ppb |
| Show Low Crossroads HOA AZ0401372 | 38 | 0 | 0 | 1 | 0.7 ppb |
| New Lands Ntua NN0403102 | 1,905 | 0 | 0 | 0 | 1 ppb |
| Petrified Forest Np AZ0401704 | 1,742 | 0 | 0 | 0 | 0 ppb |
| Lukachukai Ntua NN0403047 | 1,659 | 0 | 0 | 0 | 2 ppb |
| Cottonwood-Tselani Ntua NN0403021 | 1,334 | 0 | 0 | 0 | 1 ppb |
ZIP reports in Apache County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 85927, 86028, 86503, 86506, 86508, 86511, 86556, 87328.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.