HOPLAND PUBLIC UTILITY DISTRICT
California — Community Water System — PWSID: CA2310010
System Information
| PWSID | CA2310010 |
| System Name | HOPLAND PUBLIC UTILITY DISTRICT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 25, 1983 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | UKIAH |
| ZIP Code | 95482 |
| Address | 151 Laws Avenue |
| Organization | WALKER, JARED |
| Phone | 707-462-2666 |
Population & Service
| Population Served | 1,076 |
| Service Connections | 347 |
Drinking Water Violations (25)
This water system has 25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2008 | Sep 30, 2008 | Other | No | No | — | — | — | Resolved | Sep 30, 2008 | Miscellaneous Other Rules | |
| Sep 1, 2008 | Sep 30, 2008 | Other | No | No | — | — | — | Resolved | Sep 30, 2008 | Miscellaneous Other Rules | |
| Jan 1, 2007 | Dec 31, 2007 | Other | No | No | — | — | — | Resolved | Dec 31, 2007 | Miscellaneous Other Rules | |
| Jan 1, 2007 | Dec 31, 2007 | Other | No | No | — | — | — | Resolved | Dec 31, 2007 | Miscellaneous Other Rules | |
| Oct 1, 2005 | Oct 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2005 | Total Coliform Rule |
| Oct 1, 2005 | Oct 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2005 | Total Coliform Rule |
| Jan 1, 2005 | Dec 31, 2005 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2005 | Dec 31, 2005 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2005 | Dec 31, 2005 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2005 | Dec 31, 2005 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Nov 19, 2004 | Dec 9, 2004 | Other | No | No | — | — | — | Resolved | Dec 9, 2004 | Miscellaneous Other Rules | |
| Nov 1, 2004 | Nov 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2004 | Total Coliform Rule |
| Nov 1, 2004 | Nov 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2004 | Total Coliform Rule |
| Nov 1, 2004 | — | Public Notice | Other | No | No | — | — | — | Resolved | Dec 9, 2004 | Public Notice Rule and Revised PN Rule |
| Nov 1, 2004 | — | Public Notice | Other | No | No | — | — | — | Resolved | Dec 9, 2004 | Public Notice Rule and Revised PN Rule |
| Sep 1, 2004 | Sep 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2004 | Total Coliform Rule |
| Sep 1, 2004 | Sep 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2004 | Total Coliform Rule |
| Oct 1, 2001 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 13, 2013 | Lead and Copper Rule |
| Oct 1, 2001 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 13, 2013 | Lead and Copper Rule |
| Jul 1, 2001 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 19, 2015 | Consumer Confidence Rule |
| Jul 1, 2001 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 19, 2015 | Consumer Confidence Rule |
| Jun 1, 2001 | Jun 30, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2001 | Total Coliform Rule |
| Jun 1, 2001 | Jun 30, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2001 | Total Coliform Rule |
| Dec 1, 2000 | Dec 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2000 | Total Coliform Rule |
| Aug 1, 1988 | Aug 31, 1988 | Other | No | No | — | — | — | Archived | Aug 31, 1988 | Miscellaneous Other Rules |
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.