Thorp Arco AM/PM
Washington — Transient Non-Community — PWSID: WA53AC250
System Information
| PWSID | WA53AC250 |
| System Name | Thorp Arco AM/PM |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 6, 2009 |
| Last Reported | Dec 11, 2025 |
Location & Contact
| State | Washington |
| City | Moses Lake |
| ZIP Code | 98837 |
| Address | PO Box 5160 |
| Organization | Thorp Arco AM/PM |
| Phone | — |
Population & Service
| Population Served | 500 |
| Service Connections | 1 |
Drinking Water Violations (9)
This water system has 9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 1, 2020 | Jun 30, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jun 30, 2020 | Revised Total Coliform Rule |
| Jan 1, 2020 | Dec 31, 2020 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2020 | Nitrate Rule |
| Feb 1, 2019 | Feb 28, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Feb 28, 2019 | Revised Total Coliform Rule |
| Oct 1, 2018 | Oct 31, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2018 | Revised Total Coliform Rule |
| Jan 1, 2018 | Dec 31, 2018 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2018 | Nitrate Rule |
| Oct 1, 2017 | Oct 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2017 | Revised Total Coliform Rule |
| Sep 1, 2012 | Sep 30, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | Total Coliform Rule |
| Nov 1, 2011 | Nov 30, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2011 | Total Coliform Rule |
| Jan 1, 2010 | Dec 31, 2010 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2010 | Nitrate Rule |
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.