Water Quality: Mossyrock, WA
4 water systems • 2,386 people served
Some ConcernsWater Quality Summary
Mossyrock is served by 4 public water systems with a combined service population of 2,386 people, and has 34 EPA Safe Drinking Water Act violations on record. Critically, 1 of those are health-based violation, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Mossyrock's violation count is 79% below the national average for Washington. Contaminants associated with violations include Disinfection Byproducts.
Contaminants Found
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Water Systems Serving Mossyrock
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MOSSYROCK PUBLIC UTILITY CITY OF | WA5356350 | Groundwater | 1,553 | 12 |
| Lewis Co Water Sewer Dist #6 | WA5344240 | Groundwater | 740 | 11 |
| Cowlitz Indian Tribal Housing | WA5325244 | Groundwater | 52 | 6 |
| LAKEVIEW TERRACE | WA5345365 | Groundwater | 41 | 5 |
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.