EPCOR - WILLOW VALLEY/KING STREET Water Quality Report
Population
3,408
people served
Water Source
🏔️ Ground
wells & aquifers
National Rank
Top 90%
of 49,184 US systems
5-Year Record
⚠️ 17
violations recorded
C
Fair
Safety Grade
17 violations in the past 5 years, including 1 health-based
System Details
- PWSID
- AZ0408040
- Population Served
- 3,408
- Water Source
- Ground Water
- Owner
- Private
- State
- Arizona
- EPA Region
- 9
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 5000 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 7000 | ⚠ Monitoring/Reporting | 6 |
| Contaminant 0999 | ⚠ Monitoring/Reporting | 5 |
| Total Trihalomethanes (TTHMs) | ⚠ Monitoring/Reporting | 3 |
| Haloacetic Acids (HAA5) | ⚠ Monitoring/Reporting | 3 |
| Bromate | ✕ Health-Based | 8 |
Violation History
2025
1
2022
7
2021
9
2020
2
2015
3
2011
1
2009
1
2007
1
2006
1
2004
1
Total violations on record: 28
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
How does this compare?
This systemNational average
Grade C
Avg: B-C
28violations total
100% of national average
National avg: ~28 per system
📍 Average-sized water system.