UNION GAP WATER
Washington — Community Water System — PWSID: WA5390250
System Information
| PWSID | WA5390250 |
| System Name | UNION GAP WATER |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Union Gap |
| ZIP Code | 98903 |
| Address | PO BOX 3008 |
| Organization | UNION GAP WATER |
| Phone | — |
Population & Service
| Population Served | 6,433 |
| Service Connections | 1,981 |
Drinking Water Violations (26)
This water system has 26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 1, 2017 | Dec 31, 2017 | MON | No | Yes | — | — | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.04 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2010 | — | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2010 | — | |
| Oct 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jul 1, 2006 | Sep 30, 2006 | MR | No | Yes | — | 0.02 mg/L | — | Archived | Sep 30, 2006 | — | |
| Feb 1, 2005 | Feb 28, 2005 | MCL | Yes | No | — | 5% of samples | — | Archived | Feb 28, 2005 | — | |
| Nov 1, 2004 | Nov 30, 2004 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 2004 | — | |
| Jul 1, 1999 | Jul 31, 1999 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1999 | — | |
| Jul 1, 1999 | Jul 31, 1999 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1999 | — | |
| Jul 1, 1999 | Jul 31, 1999 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1999 | — | |
| Jan 1, 1999 | Jan 1, 2000 | MR | No | No | — | TT | — | Resolved | Jan 1, 2000 | — | |
| Sep 1, 1996 | Sep 30, 1996 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1996 | — | |
| Jun 1, 1996 | Jun 30, 1996 | MCL | Yes | No | — | 5% of samples | — | Archived | Jun 30, 1996 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 2 mg/L | — | Archived | Oct 31, 1979 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 0.002 mg/L | — | Archived | Oct 31, 1979 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 0.05 mg/L | — | Archived | Oct 31, 1979 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 0.1 mg/L | — | Archived | Oct 31, 1979 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 15 pCi/L | — | Archived | Oct 31, 1979 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 0.005 mg/L | — | Archived | Oct 31, 1979 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 0.010 mg/L | — | Archived | Oct 31, 1979 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 10 mg/L | — | Archived | Oct 31, 1979 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 4.0 mg/L | — | Archived | Oct 31, 1979 | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.