OASIS WATER CORPORATION
Washington — Community Water System — PWSID: WA5319069
System Information
| PWSID | WA5319069 |
| System Name | OASIS WATER CORPORATION |
| 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 | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Pasco |
| ZIP Code | 99302 |
| Address | PO Box 4766 |
| Organization | OASIS WATER CORPORATION |
| Phone | — |
Population & Service
| Population Served | 556 |
| Service Connections | 210 |
Drinking Water Violations (60)
This water system has 60 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, 2016 | — | Other | No | No | — | — | — | Resolved | Oct 26, 2016 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2007 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 2007 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Nov 1, 2005 | Nov 30, 2005 | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 2005 | — | |
| Mar 1, 2005 | Mar 31, 2005 | MR | No | No | — | 5% of samples | — | Archived | Mar 31, 2005 | — | |
| Mar 1, 1997 | Mar 31, 1997 | MR | No | Yes | — | 5% of samples | — | Archived | Mar 31, 1997 | — | |
| Mar 1, 1997 | Mar 31, 1997 | MR | No | Yes | — | 5% of samples | — | Archived | Mar 31, 1997 | — | |
| Oct 1, 1995 | Oct 31, 1995 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1995 | — | |
| Oct 1, 1995 | Oct 31, 1995 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1995 | — | |
| Mar 1, 1995 | Mar 31, 1995 | MCL | Yes | No | — | 5% of samples | — | Archived | Mar 31, 1995 | — | |
| Mar 1, 1995 | Mar 31, 1995 | MCL | Yes | No | — | 5% of samples | — | Archived | Mar 31, 1995 | — | |
| Oct 19, 1994 | Nov 18, 1994 | MR | No | Yes | — | 5% of samples | — | Archived | Nov 18, 1994 | — | |
| Oct 19, 1994 | Nov 18, 1994 | MR | No | Yes | — | 5% of samples | — | Archived | Nov 18, 1994 | — | |
| Oct 1, 1992 | Oct 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1992 | — | |
| Oct 1, 1992 | Oct 31, 1992 | MR | No | No | — | 5% of samples | — | Archived | Oct 31, 1992 | — | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1992 | — | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1992 | — | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1992 | — | |
| Sep 1, 1992 | Sep 30, 1992 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1992 | — | |
| Mar 1, 1992 | Mar 31, 1992 | MR | No | Yes | — | 5% of samples | — | Archived | Mar 31, 1992 | — | |
| Mar 1, 1992 | Mar 31, 1992 | MR | No | Yes | — | 5% of samples | — | Archived | Mar 31, 1992 | — | |
| Nov 1, 1991 | Nov 30, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1991 | — | |
| Nov 1, 1991 | Nov 30, 1991 | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1991 | — | |
| Nov 1, 1991 | Nov 30, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1991 | — | |
| Nov 1, 1991 | Nov 30, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1991 | — | |
| Nov 1, 1991 | Nov 30, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1991 | — | |
| Oct 1, 1991 | Oct 31, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1991 | — | |
| Oct 1, 1991 | Oct 31, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1991 | — | |
| Oct 1, 1991 | Oct 31, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1991 | — | |
| Oct 1, 1991 | Oct 31, 1991 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1991 | — | |
| 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 | — | 2 mg/L | — | Archived | Oct 31, 1979 | — |
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.