JOHNSTON RIDGE OBSERVATORY
Washington — Transient Non-Community — PWSID: WA53FS021
System Information
| PWSID | WA53FS021 |
| System Name | JOHNSTON RIDGE OBSERVATORY |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jun 5, 1997 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Amboy |
| ZIP Code | 98601 |
| Address | 42218 NE Yale Bridge Rd. |
| Organization | JOHNSTON RIDGE OBSERVATORY |
| Phone | — |
Population & Service
| Population Served | 2,506 |
| Service Connections | 4 |
Drinking Water Violations (15)
This water system has 15 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2022 | Jul 31, 2022 | MON | No | No | — | — | — | Resolved | Jul 31, 2022 | — | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | No | — | — | — | Resolved | Jul 31, 2022 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Aug 1, 2021 | Aug 31, 2021 | MON | No | No | — | — | — | Resolved | Aug 31, 2021 | — | |
| Aug 1, 2021 | Aug 31, 2021 | MON | No | No | — | — | — | Resolved | Aug 31, 2021 | — | |
| Jul 1, 2021 | Jul 31, 2021 | MON | No | No | — | — | — | Resolved | Jul 31, 2021 | — | |
| Jul 1, 2021 | Jul 31, 2021 | MON | No | No | — | — | — | Resolved | Jul 31, 2021 | — | |
| Jun 1, 2021 | Jun 30, 2021 | MON | No | No | — | — | — | Resolved | Jun 30, 2021 | — | |
| Jun 1, 2021 | Jun 30, 2021 | MON | No | No | — | — | — | Resolved | Jun 30, 2021 | — | |
| May 1, 2021 | May 31, 2021 | MON | No | No | — | — | — | Resolved | May 31, 2021 | — | |
| May 1, 2021 | May 31, 2021 | MON | No | No | — | — | — | Resolved | May 31, 2021 | — | |
| Aug 1, 2020 | Aug 31, 2020 | MON | No | No | — | — | — | Resolved | Aug 31, 2020 | — | |
| Aug 1, 2020 | Aug 31, 2020 | MON | No | No | — | — | — | Resolved | Aug 31, 2020 | — | |
| Sep 1, 2018 | Sep 30, 2018 | MON | No | No | — | — | — | Resolved | Sep 30, 2018 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.