UKIAH, CITY OF
Oregon - Community Water System - PWSID: OR4100913
System Information
| PWSID | OR4100913 |
| System Name | UKIAH, 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 | Mar 12, 1979 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Oregon |
| City | UKIAH |
| ZIP Code | 97880 |
| Address | PO BOX 265 |
| Organization | UKIAH, CITY OF |
| Phone | 541-427-3900 |
Population & Service
| Population Served | 235 |
| Service Connections | 165 |
Drinking Water Violations (178)
This water system has 178 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, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 3, 2023 | - | |
| Aug 1, 2020 | Aug 31, 2020 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2020 | - | |
| Jul 6, 2017 | - | TT | Yes | No | - | - | - | Resolved | Aug 21, 2017 | - | |
| Jun 5, 2017 | - | MR | No | Yes | - | - | - | Resolved | Jun 22, 2017 | - | |
| Jan 5, 2015 | - | Other | No | No | - | - | - | Resolved | Jan 14, 2015 | - | |
| Jan 5, 2015 | - | Other | No | No | - | - | - | Resolved | Jan 14, 2015 | - | |
| Nov 28, 2014 | - | Other | No | No | - | - | - | Resolved | Dec 6, 2014 | - | |
| Oct 30, 2014 | - | MR | No | Yes | - | - | - | Resolved | Feb 21, 2015 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2014 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2014 | - | |
| Oct 1, 2014 | Oct 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Jul 14, 2014 | - | Other | No | No | - | - | - | Resolved | Aug 22, 2014 | - | |
| Jul 10, 2014 | - | MR | No | Yes | - | - | - | Resolved | Aug 8, 2014 | - | |
| Jul 1, 2014 | Jul 31, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2014 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| Jun 1, 2014 | Jun 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| May 1, 2014 | May 31, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2022 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2022 | - | |
| Dec 1, 2013 | Dec 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2013 | - | |
| Nov 11, 2013 | - | Other | No | No | - | - | - | Resolved | Feb 26, 2014 | - | |
| Oct 1, 2013 | Oct 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2013 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2013 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2013 | - | |
| Aug 1, 2013 | Aug 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2013 | - | |
| Apr 1, 2013 | Apr 30, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2013 | - | |
| Jun 1, 2012 | Jun 30, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2012 | - | |
| Jun 1, 2012 | Jun 30, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2012 | - | |
| Apr 1, 2012 | - | MR | No | Yes | - | - | - | Resolved | Jun 5, 2012 | - | |
| Apr 1, 2012 | - | MR | No | Yes | - | - | - | Resolved | Jun 5, 2012 | - | |
| Apr 1, 2012 | - | MR | No | Yes | - | - | - | Resolved | Jun 5, 2012 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2011 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Jul 21, 2011 | - | Other | No | No | - | - | - | Resolved | Jun 9, 2011 | - | |
| Jul 21, 2011 | - | Other | No | No | - | - | - | Resolved | Jun 9, 2011 | - | |
| Jul 1, 2011 | Jul 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2011 | - | |
| Jul 1, 2011 | Jul 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2011 | - |
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.