Coconino County Water Quality
Arizona
According to EPA SDWIS, Coconino County, Arizona hosts 45 community water systems covering about 150,366 people. The same extract lists 219 health-based violation records across 30 systems. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Coconino County, Arizona hosts 45 EPA-regulated community water systems delivering drinking water to approximately 150,366 people. Each system is catalogued in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which mandates monitoring for dozens of regulated contaminants, public notification when standards are exceeded, and the issuance of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 219 violation records across these active community systems, with 30 systems carrying at least one record. The extract excludes monitoring and reporting violations. The county contains 17 incorporated places where these systems deliver service.
A historical health-based registry row does not establish water delivered today or describe current compliance. For current conditions, request the utility's most recent Consumer Confidence Report or contact the Arizona drinking water program. Figures shown here reflect only the health-based subset fetched from federal EPA SDWIS.
What water systems serve Coconino County?
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| FLAGSTAFF CITY OF | 79,796 | 1 | Health |
| GRAND CANYON NATIONAL PARK | 16,590 | 13 | Health |
| DONEY PARK WATER | 8,996 | 2 | Health |
| PAGE CITY OF | 7,420 | 3 | Health |
| GOLDEN SHORES WATER COMPANY | 3,970 | 4 | Health |
| KACHINA VILLAGE DWID | 3,500 | 2 | Health |
| WILLIAMS CITY OF | 3,145 | 21 | Health |
| ASH FORK WATER SERVICE | 2,250 | 2 | Health |
| Tuba City Boarding School BIA | 2,040 | 0 | Clean |
| BLUE RIDGE DWID | 1,920 | 0 | Clean |
| FOREST LAKES WATER IMPROVEMENT DISTRICT | 1,746 | 1 | Health |
| Upper Moenkopi | 1,740 | 0 | Clean |
| FOREST HIGHLANDS WATER COMPANY | 1,668 | 0 | Clean |
| Hotevilla Village | 1,601 | 1 | Health |
| PONDEROSA UTILITY CORP | 1,585 | 6 | Health |
| SUNRISE VISTA UTILITIES | 1,500 | 0 | Clean |
| BEARIZONA | 1,423 | 1 | Health |
| FREDONIA TOWN OF | 1,327 | 0 | Clean |
| CAMERON TRADING POST | 1,270 | 15 | Health |
| Bacavi Village | 943 | 0 | Clean |
| Havasupai Village | 885 | 2 | Health |
| GLEN CANYON NRA WAHWEAP | 579 | 2 | Health |
| ESCAPEES AT NORTH RANCH | 500 | 0 | Clean |
| Lower Moencopi - Spring Source | 465 | 17 | Health |
| GRAND CANYON JUNCTION HYDRO | 430 | 0 | Clean |
| Kaibab Village | 407 | 12 | Health |
| Kaibeto (Upper) Boarding School BIA | 400 | 0 | Clean |
| Tonalea (Red Lake) Day School BIA | 300 | 0 | Clean |
| MOUNTAIN DELL WATER INC | 250 | 2 | Health |
| PAINTED DESERT DEMO PROJECT STAR SCHOOL | 250 | 1 | Health |
| Leupp Contract Boarding School BIA | 250 | 0 | Clean |
| GREEN VALLEY MHP | 190 | 60 | Health |
| Navajo Mountain Community Boarding School BIA | 163 | 6 | Health |
| TALL PINES ESTATES WATER | 156 | 4 | Health |
| LAKE MARY COUNTRY STORE | 130 | 2 | Health |
| Moccasin Domestic Water Improvement District | 96 | 0 | Clean |
| HECKETHORN WATER COMPANY | 90 | 2 | Health |
| Six Mile and Steamboat Village | 88 | 2 | Health |
| USFS KNF TUSAYAN ADMIN | 80 | 7 | Health |
| MAJESTIC VIEW WATER IMPROVEMENT DISTRICT | 70 | 17 | Health |
| SAGE VALLEY MHP | 55 | 7 | Health |
| A1 RANCH DWID | 45 | 0 | Clean |
| LOCKETT ESTATES | 30 | 3 | Health |
| JACOB LAKE LODGE | 27 | 1 | Health |
| HUC Regional Water System | 0 | 0 | Clean |
Cities in Coconino County
How does Coconino County compare in Arizona?
Of the 15 Arizona counties with at least one community water system on file, Coconino County ranks #7 by number of systems (45).
Either side of it: Pinal County (74), Gila County (47), Navajo County (45), Mohave County (39)
What are Coconino County's health-based records for?
Coconino County's health-based violation records carry 8 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results, and a historical record does not establish present water quality.
| Contaminant | Records | Systems |
|---|---|---|
| Arsenic | 64 | 4 |
| Groundwater Rule | 59 | 15 |
| Tthm | 27 | 5 |
| Revised Total Coliform Rule | 24 | 9 |
| Lead and Copper Rule Revisions | 16 | 11 |
| Interim Enhanced Surface Water Treatment Rule | 12 | 1 |
| Carbon, Total | 8 | 1 |
| Lead and Copper Rule | 5 | 2 |
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
Figures here are the current EPA SDWIS extract joined to the 45 community water systems whose service area falls in Coconino County, ranked against the 15 Arizona counties with at least one system on file. Data current as of 2026-08-25. Editorial standards, methodology, report an error.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
Read our methodology - how this data is sourced, computed, and verified.