THE DALLES, CITY OF
Oregon — Community Water System — PWSID: OR4100869
System Information
| PWSID | OR4100869 |
| System Name | THE DALLES, CITY OF |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 12, 1979 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Oregon |
| City | THE DALLES |
| ZIP Code | 97058 |
| Address | 6780 RESERVOIR RD |
| Organization | THE DALLES, CITY OF |
| Phone | 541-298-2248 |
Population & Service
| Population Served | 13,010 |
| Service Connections | 5,408 |
Drinking Water Violations (28)
This water system has 28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.060 mg/L | — | Archived | Dec 31, 2025 | — | |
| Oct 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 15 pCi/L | — | Archived | Dec 31, 2025 | — | |
| Oct 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 0.080 mg/L | — | Archived | Dec 31, 2025 | — | |
| Oct 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 30 ug/L | — | Archived | Dec 31, 2025 | — | |
| Oct 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 5 pCi/L | — | Archived | Dec 31, 2025 | — | |
| Jul 1, 2023 | Jul 31, 2023 | MR | No | Yes | — | — | — | Resolved | Jul 31, 2023 | — | |
| Jul 1, 2023 | Jul 31, 2023 | MR | No | Yes | — | — | — | Resolved | Jul 31, 2023 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Jan 5, 2024 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Sep 7, 2023 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Sep 7, 2023 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Sep 7, 2023 | — | |
| Jul 1, 2023 | Jul 31, 2023 | MR | No | Yes | — | — | — | Resolved | Jul 31, 2023 | — | |
| Jul 1, 2023 | — | MR | No | No | — | TT | — | Resolved | Sep 7, 2023 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Mar 31, 2019 | — | |
| Jan 1, 2019 | Mar 31, 2019 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Mar 31, 2019 | — | |
| Oct 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Oct 1, 2018 | Dec 31, 2018 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2018 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Mar 1, 2009 | Mar 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2009 | — | |
| Mar 1, 2009 | Mar 31, 2009 | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2009 | — | |
| Feb 1, 2005 | Feb 28, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2005 | — | |
| Feb 1, 2005 | Feb 28, 2005 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2005 | — | |
| Oct 1, 2002 | Oct 31, 2002 | MR | No | Yes | — | — | — | Resolved | Oct 31, 2002 | — | |
| Apr 1, 2002 | Apr 30, 2002 | MR | No | Yes | — | — | — | Resolved | Apr 30, 2002 | — | |
| Jun 1, 1976 | May 31, 1980 | MR | No | No | — | 5 pCi/L | — | Archived | May 31, 1980 | — | |
| Jun 1, 1976 | May 31, 1980 | MR | No | No | — | 15 pCi/L | — | Archived | May 31, 1980 | — | |
| — | — | — | 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.