EPCOR - WILLOW VALLEY/KING STREET
PWSID: AZ0408040 · El Mirage, AZ · Serves 3,408 people
According to EPA Safe Drinking Water Information System (SDWIS), EPCOR - WILLOW VALLEY/KING STREET (PWSID AZ0408040) in El Mirage, AZ is listed as a CWS water system covering about 3,408 people. The same extract lists 2 health-based violation records spanning 2025-2025. Those 2 health-based rows for EPCOR - WILLOW VALLEY/KING STREET cover contaminants such as Chlorite; they remain historical EPA registry entries, not a current compliance or drinkability score.
EPCOR - WILLOW VALLEY/KING STREET has 2 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including Chlorite. Recorded violations span 2025–2025. Day-to-day primacy enforcement for this system runs through the Arizona drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current 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 (2)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Chlorite | 2 | 2 |
Frequently Asked Questions
What does EPA SDWIS list for EPCOR - WILLOW VALLEY/KING STREET?
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?
Compare beyond Arizona
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest EPCOR - WILLOW VALLEY/KING STREET on cumulative violation count (2) and EPA-reported population served (3,408). Violation-count peers include SAINT REGIS MOHAWK TRIBE, REDBY/RED LAKE, Kickapoo Traditional Tribe. Population peers include BELOIT, CITY OF, MILAN COMMUNITY WATER SYSTEM, MCINTOSH COUNTY-CRESCENT COMMUNITY WS.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
EPCOR - WILLOW VALLEY/KING STREET (AZ0408040) is drawn from EPA SDWIS. Nearby county systems in this extract include GILBERT, TOWN OF; SCOTTSDALE CITY OF; GLENDALE CITY OF; PEORIA CITY OF. Health-based rows (2 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.