Olympia, WA · Pierce County
MOUNTAIN VALLEY WATER SYSTEM Water System
Consumer Confidence Report status
MOUNTAIN VALLEY WATER SYSTEM must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for MOUNTAIN VALLEY WATER SYSTEM.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Washington’s official records. Always confirm current status with Washington before making decisions based on this information.
System facts
- System ID (PWSID)
- WA5373560
- System type
- Community Water System
- Population served
- 126
- Service connections
- 42
- Ownership
- privately owned
- Water source
- groundwater (wells)
MOUNTAIN VALLEY WATER SYSTEM is one of 3,227 community water systems in Washington in the 500 or fewer people size category, serving 126 people from groundwater.
As of August 1, 2026, its federal record holds 3 entries between 2000 and 2025, all of which EPA lists as closed.
Of the 3, 2 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Consumer Confidence Rule, inorganic chemicals, and the Total Coliform Rules.
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2025 – October 16, 2025
ResolvedMonitoring, Regular
—Nitrate
January 1, 2007 – December 31, 2007
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
October 1, 2000 – October 31, 2000
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2025 – October 16, 2025 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| January 1, 2007 – December 31, 2007 | Monitoring, Regular | Nitrate | — | Resolved |
| October 1, 2000 – October 31, 2000 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- October 16, 2025State Compliance achieved1 linked violation
Common questions
Is MOUNTAIN VALLEY WATER SYSTEM required to publish a Consumer Confidence Report?
- Yes. MOUNTAIN VALLEY WATER SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is MOUNTAIN VALLEY WATER SYSTEM’s next Consumer Confidence Report due?
- MOUNTAIN VALLEY WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MOUNTAIN VALLEY WATER SYSTEM have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MOUNTAIN VALLEY WATER SYSTEM.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
MOUNTAIN VALLEY WATER SYSTEM
Phone not on record
Olympia, WA 98501