Public water system record
Castle Rock Municipal Water
Serves Castle Rock, Cowlitz County, WA · 4,367 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for Castle Rock Municipal Water in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Castle Rock Municipal Water draws water from 6 wells and 1 surface water intake (6 of them for emergency, seasonal or other part-time use).
- Record on file since 1979, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 1,017 service lines.
Check whether Castle Rock Municipal Water serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
Full record since 1979
EPA's records for Castle Rock Municipal Water go back to 1979. Before October 19, 2016 they list 2 health-based violations (2 archived by EPA without a recorded fix) and 41 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1990s | 1 | 0 |
| 2000s | 1 | 40 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Surface Water Treatment Rule, began April 2006, Archived.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2006 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 1994 | Archived |
Where the water comes from
Castle Rock Municipal Water draws water from 6 wells and 1 surface water intake (6 of them for emergency, seasonal or other part-time use). 1 other community water system buys water from Castle Rock Municipal Water.
Community systems that buy water from it
- Toutle Community Regional Water Kelso, WA
Annual water quality report
Castle Rock Municipal Water must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Washington.
Certified drinking water labs by state EPA guidance for private wells