SUNNYSIDE CITY OF
Washington — Community Water System — PWSID: WA5385400
System Information
| PWSID | WA5385400 |
| System Name | SUNNYSIDE CITY OF |
| 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 | Sunnyside |
| ZIP Code | 98944 |
| Address | 818 E Edison |
| Organization | SUNNYSIDE CITY OF |
| Phone | — |
Population & Service
| Population Served | 17,194 |
| Service Connections | 5,456 |
Drinking Water Violations (48)
This water system has 48 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, 2025 | — | Other | No | No | — | — | — | Resolved | Sep 25, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.080 mg/L | — | Archived | Dec 31, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.060 mg/L | — | Archived | Dec 31, 2025 | — | |
| Feb 1, 2024 | Feb 29, 2024 | MON | No | No | — | — | — | Resolved | Feb 29, 2024 | — | |
| Jan 1, 2023 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Jan 1, 2017 | Dec 31, 2017 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2017 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Oct 1, 2014 | Dec 31, 2014 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.04 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, 2022 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.4 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, 2022 | MR | No | Yes | — | 0.0002 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | — | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.003 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.001 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | — | 0.0004 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Oct 1, 2007 | Dec 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Dec 31, 2007 | — | |
| Jul 1, 2007 | Sep 30, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Sep 30, 2007 | — | |
| Jul 1, 2007 | Sep 30, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Sep 30, 2007 | — | |
| Jul 1, 2007 | Sep 30, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Sep 30, 2007 | — | |
| Jul 1, 2007 | Sep 30, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Sep 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Apr 1, 2007 | Jun 30, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Jun 30, 2007 | — | |
| Jan 1, 2007 | Mar 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Mar 31, 2007 | — | |
| Jan 1, 2007 | Mar 31, 2007 | MR | No | Yes | — | 0.02 mg/L | — | Resolved | Mar 31, 2007 | — | |
| Jan 1, 1999 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Oct 1, 1997 | Oct 31, 1997 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1997 | — | |
| Oct 1, 1997 | Oct 31, 1997 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1997 | — | |
| Oct 1, 1997 | Oct 31, 1997 | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 1997 | — | |
| Sep 1, 1995 | Sep 30, 1995 | MCL | Yes | No | — | 5% of samples | — | Archived | Sep 30, 1995 | — | |
| Oct 1, 1979 | Oct 31, 1979 | MR | No | No | — | 15 pCi/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.