Water Quality: Black Diamond, WA
6 water systems • 3,152 people served
No Health ViolationsWater Quality Summary
Black Diamond is served by 6 public water systems with a combined service population of 3,152 people, and has 136 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. Black Diamond's violation count is 16% below the national average for Washington.
Water Systems Serving Black Diamond
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| BLACK DIAMOND WATER DEPT | WA5307220 | Groundwater | 2,420 | 6 |
| WESTERN RANCHETTES INC. | WA5395123 | Groundwater | 250 | 22 |
| SOUTH AUBURN WATER ASSOCIATION | WA5381400 | Groundwater | 212 | 32 |
| MARIANI WATER SYSTEM INC | WA5351675 | Groundwater | 138 | 3 |
| Creekside Apartments | WA5345164 | Groundwater | 100 | 73 |
| SAWYERWOOD WATER SYSTEM | WA5376462 | Groundwater | 32 | 0 |
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.