San Carlos Water Quality
Arizona
According to EPA SDWIS, San Carlos, Arizona is served by 8 community water systems covering about 14,377 people. The same extract lists 139 health-based violation records, most recently coded 0700 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in San Carlos, Arizona is delivered through 8 EPA-regulated community water systems serving an estimated 14,377 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.
PlainEnviro's health-based SDWIS extract shows 139 violation records across the 8 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 5 distinct EPA contaminant codes: Groundwater Rule, Revised Total Coliform Rule, Surface Water Treatment Rule, Arsenic, Coliform (TCR).
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. 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 |
|---|---|---|---|
| SCUA Upper Seven Mile | 8,478 | 72 | Health |
| SCUA Bylas | 3,160 | 34 | Health |
| SCUA Lower Peridot | 702 | 13 | Health |
| SCUA Beverly Hills | 612 | 5 | Health |
| SCUA Cutter | 574 | 0 | Clean |
| SCUA Lower Peridot Bush | 342 | 9 | Health |
| SCUA Upper Peridot | 275 | 6 | Health |
| SCUA Skill Center | 234 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| SCUA Beverly Hills | Groundwater Rule | 2025-12-01 |
| SCUA Beverly Hills | Groundwater Rule | 2025-11-28 |
| SCUA Upper Peridot | Groundwater Rule | 2025-11-28 |
| SCUA Upper Peridot | Groundwater Rule | 2025-11-28 |
| SCUA Upper Peridot | Groundwater Rule | 2025-11-28 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2025-11-28 |
| SCUA Upper Seven Mile | Groundwater Rule | 2025-11-28 |
| SCUA Upper Seven Mile | Groundwater Rule | 2025-11-28 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2025-11-01 |
| SCUA Upper Seven Mile | Groundwater Rule | 2025-11-01 |
| SCUA Upper Seven Mile | Groundwater Rule | 2025-11-01 |
| SCUA Upper Seven Mile | Groundwater Rule | 2025-11-01 |
| SCUA Beverly Hills | Groundwater Rule | 2025-10-24 |
| SCUA Upper Seven Mile | Groundwater Rule | 2025-10-24 |
| SCUA Lower Peridot | Groundwater Rule | 2025-10-24 |
| SCUA Lower Peridot | Groundwater Rule | 2025-10-24 |
| SCUA Lower Peridot | Groundwater Rule | 2025-10-24 |
| SCUA Lower Peridot | Groundwater Rule | 2025-10-24 |
| SCUA Upper Seven Mile | Groundwater Rule | 2025-10-10 |
| SCUA Bylas | Groundwater Rule | 2025-10-10 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2025-07-31 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2025-07-31 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2025-07-31 |
| SCUA Bylas | Surface Water Treatment Rule | 2025-05-28 |
| SCUA Bylas | Revised Total Coliform Rule | 2024-08-01 |
| SCUA Bylas | Revised Total Coliform Rule | 2024-08-01 |
| SCUA Bylas | Revised Total Coliform Rule | 2024-08-01 |
| SCUA Lower Peridot | Revised Total Coliform Rule | 2024-01-27 |
| SCUA Beverly Hills | Groundwater Rule | 2024-01-19 |
| SCUA Beverly Hills | Groundwater Rule | 2024-01-19 |
| SCUA Upper Peridot | Groundwater Rule | 2024-01-19 |
| SCUA Upper Peridot | Groundwater Rule | 2024-01-19 |
| SCUA Upper Peridot | Groundwater Rule | 2024-01-19 |
| SCUA Lower Peridot | Groundwater Rule | 2024-01-19 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2023-07-01 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2023-07-01 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2023-07-01 |
| SCUA Lower Peridot | Revised Total Coliform Rule | 2023-07-01 |
| SCUA Lower Peridot | Revised Total Coliform Rule | 2023-07-01 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2023-06-30 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2023-06-30 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2023-06-30 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2023-06-30 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2023-06-30 |
| SCUA Lower Peridot Bush | Groundwater Rule | 2023-06-30 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2023-06-01 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2023-06-01 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2023-06-01 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2023-06-01 |
| SCUA Upper Seven Mile | Revised Total Coliform Rule | 2023-05-13 |
What are San Carlos's health-based records for?
San Carlos's health-based violation records carry 5 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.
| Contaminant | Records | Systems |
|---|---|---|
| Groundwater Rule | 56 | 6 |
| Revised Total Coliform Rule | 54 | 3 |
| Arsenic | 26 | 1 |
| Coliform (TCR) | 2 | 1 |
| Surface Water Treatment Rule | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in San Carlos, Arizona? ▼
How many water violations does San Carlos have in this EPA extract? ▼
What contaminants were found in San Carlos water? ▼
How many water systems serve San Carlos? ▼
Where does San Carlos get its drinking water? ▼
How does San Carlos compare in Arizona?
Of the 191 Arizona places with at least one community water system on file, San Carlos ranks #24 by number of systems (8).
Either side of it: Litchfield Park (8), Littlefield (8), Chino Valley (7), Kingman (7)
About This Data
Figures here are the current EPA SDWIS extract joined to the 8 community water systems whose service area lists San Carlos, ranked against the 191 Arizona places with at least one system on file. Data current as of 2026-08-25.
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.
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.
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.