EPCOR - WILLOW VALLEY/KING STREET
PWSID: AZ0408040 · El Mirage, AZ · Serves 3,408 people
EPCOR - WILLOW VALLEY/KING STREET has 1 health-based violation out of 1 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
EPCOR - WILLOW VALLEY/KING STREET (PWSID AZ0408040) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 3,408 people in El Mirage, AZ, and is subject to primacy enforcement by the Arizona drinking-water program.
The system's federal compliance record contains 1 total violation, with 1 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Contaminant 1009. Recorded violations span 2025–2025.
A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Arizona state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- AZ0408040
- System Type
- CWS
- Water Source
- Groundwater
- Location
- El Mirage, AZ
- Population Served
- 3,408
- Health Violations
- Yes (1)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Contaminant 1009 | 1 | 1 |
Violation History (1)
| Contaminant | Health | Date |
|---|---|---|
| Contaminant 1009 | Yes | Apr 1, 2025 |
Frequently Asked Questions
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How many people does EPCOR - WILLOW VALLEY/KING STREET serve?
What violations does EPCOR - WILLOW VALLEY/KING STREET have?
What contaminants have been found in EPCOR - WILLOW VALLEY/KING STREET water?
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About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.