SOUTHGATE WATER COMPANY
Washington — Community Water System — PWSID: WA5356344
System Information
| PWSID | WA5356344 |
| System Name | SOUTHGATE WATER COMPANY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Nov 26, 1996 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Pasco |
| ZIP Code | 99302 |
| Address | PO Box 4766 |
| Organization | SOUTHGATE WATER COMPANY |
| Phone | — |
Population & Service
| Population Served | 175 |
| Service Connections | 83 |
Drinking Water Violations (79)
This water system has 79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.7 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.6 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.007 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.002 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.2 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2020 | Dec 31, 2025 | MR | No | Yes | — | 0.075 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jul 1, 2016 | — | Other | No | No | — | — | — | Resolved | Oct 26, 2016 | — | |
| Jan 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.00005 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Dec 1, 2006 | Dec 31, 2006 | MR | No | No | — | 5% of samples | — | Archived | Dec 31, 2006 | — | |
| Jan 1, 2006 | Jan 31, 2006 | MR | No | No | — | 5% of samples | — | Archived | Jan 31, 2006 | — | |
| Apr 1, 2005 | Apr 30, 2005 | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 2005 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2005 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Dec 31, 2004 | — | |
| Jan 1, 2002 | Dec 31, 2004 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Dec 31, 2004 | — |
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.