Prescott Water Quality
Arizona
The tap water in Prescott, Arizona is served by 21 EPA-regulated water systems covering approximately 50,654 people. 56 health-based violations are on record, most recently for 1040 in 2025. Data source: EPA Safe Drinking Water Information System.
Drinking water in Prescott, Arizona is delivered through 21 EPA-regulated community water systems serving an estimated 50,654 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Prescott shows 56 total violations across all 21 systems, of which 56 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 1040, 0700, 5200, 1002, 8000 and 1 others. 3 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Arizona drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| PRESCOTT CITY OF | 42,217 | 1 | Health |
| BLACK CANYON CITY WID | 2,437 | 0 | Clean |
| GRANITE OAKS WATER USERS ASSOCIATION | 1,200 | 0 | Clean |
| PONDEROSA PARK DWID | 602 | 0 | Clean |
| INSCRIPTION CANYON WATER COMPANY | 566 | 0 | Clean |
| YARNELL WATER IMPROVEMENT ASSOCIATION | 515 | 0 | Clean |
| BRADSHAW WATER COMPANY INC | 510 | 0 | Clean |
| INSCRIPTION CANYON WATER COMPANY | 507 | 0 | Clean |
| GROOM CREEK WATER USERS | 458 | 0 | Clean |
| HIGHLAND PINE DWID | 450 | 0 | Clean |
| WHITE HORSE RANCH OWNERS ASSOCIATION | 292 | 49 | Health |
| COPCO LAKE MWC | 181 | 1 | Health |
| QUAIL RIDGE DWID | 179 | 0 | Clean |
| AMERICAN RANCH DWID | 140 | 1 | Health |
| BEVERLY GARDENS TRAILER PARK | 120 | 0 | Clean |
| RANCHO VIDA RV PARK | 57 | 1 | Health |
| LAKESIDE WATER COMPANY | 55 | 1 | Health |
| PINEHURST WATER COMPANY | 54 | 1 | Health |
| GRANITE DELLS WATER COMPANY | 50 | 0 | Clean |
| MANNEKEN APARTMENTS | 34 | 1 | Health |
| JACKSON ACRES DWID | 30 | 0 | Clean |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 1040 | 2025-07-01 |
| 1040 | 2025-04-01 |
| 0700 | 2025-01-03 |
| 1040 | 2025-01-01 |
| 1040 | 2025-01-01 |
| 0700 | 2024-10-31 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 1040 | 2024-10-01 |
| 1040 | 2024-07-01 |
| 1040 | 2024-07-01 |
| 1040 | 2024-07-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-04-01 |
| 1040 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1040 | 2024-01-01 |
| 1040 | 2023-10-01 |
| 1040 | 2023-10-01 |
| 1040 | 2023-10-01 |
| 1040 | 2023-07-01 |
| 1040 | 2023-07-01 |
| 1040 | 2023-07-01 |
| 1040 | 2023-07-01 |
| 1040 | 2023-04-01 |
| 1040 | 2023-04-01 |
| 1002 | 2023-01-01 |
| 1040 | 2023-01-01 |
| 1040 | 2023-01-01 |
| 1040 | 2022-10-01 |
| 1040 | 2022-10-01 |
| 1040 | 2022-07-01 |
| 1040 | 2022-07-01 |
| 1040 | 2022-04-01 |
| 1040 | 2022-04-01 |
| 1040 | 2022-01-01 |
| 1040 | 2021-10-01 |
| 1040 | 2021-04-01 |
| 1040 | 2021-04-01 |
| 1040 | 2020-10-01 |
| 1040 | 2020-07-01 |
| 1040 | 2020-04-01 |
| 1040 | 2020-01-01 |
| 1040 | 2019-10-01 |
| 1040 | 2019-04-01 |
| 1040 | 2018-07-01 |
| 1040 | 2018-04-01 |
| 1040 | 2018-01-01 |
| 1040 | 2017-10-01 |
| 1040 | 2017-07-01 |
TRI Facilities in Prescott
| Facility | Total Releases |
|---|---|
| Nestle Health Science US | 3.9K lbs |
| Sturm Ruger & Co Inc | 720 lbs |
| Martin Marietta Arizona LLC - Yavapai Plant | 420 lbs |
Frequently Asked Questions
Is Prescott, Arizona water safe to drink? ▼
How many water violations does Prescott have? ▼
What contaminants were found in Prescott water? ▼
How many water systems serve Prescott? ▼
Where does Prescott get its drinking water? ▼
Are there pollution sources near Prescott? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.