Water Quality: Maple Valley, WA
7 water systems • 29,155 people served
No Health ViolationsWater Quality Summary
Maple Valley is served by 7 public water systems with a combined service population of 29,155 people, and has 34 EPA Safe Drinking Water Act violations on record. None of those violations are health-based — the records reflect missed monitoring or reporting deadlines rather than a contaminant exceeding safe levels. Maple Valley's violation count is 79% below the national average for Washington.
Water Systems Serving Maple Valley
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CEDAR RIVER WATER & SEWER DISTRICT | WA5341800 | Surface Water | 28,671 | 0 |
| INDIAN RIDGE WATER ASSOCIATION | WA5335639 | Groundwater | 216 | 9 |
| EDGEHILL WATER ASSN | WA5322400 | Groundwater | 109 | 4 |
| VALLEYBROOK VILLAGE | WA5391080 | Groundwater | 65 | 5 |
| REED RANCH ROAD WATER | WA5311985 | Groundwater | 36 | 11 |
| BILLINGTON | WA5380710 | Groundwater | 34 | 2 |
| 165th Ave Water System | WA5325241 | Groundwater | 24 | 3 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Washington
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.