RANCHO CARRILLO MWC
California - Community Water System - PWSID: CA3301535
System Information
| PWSID | CA3301535 |
| System Name | RANCHO CARRILLO MWC |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | RANCHO MISSION VIEJO |
| ZIP Code | 92694 |
| Address | 30767 Gateway Pl #161 |
| Organization | HOPKINS, LUKE |
| Phone | 949-878-1821 |
Population & Service
| Population Served | 210 |
| Service Connections | 75 |
Drinking Water Violations (79)
This water system has 79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 1 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 1 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2017 | Sep 30, 2017 | MCL | Yes | No | 11.1 MG/L | 10 mg/L | - | Resolved | Sep 30, 2017 | - | |
| Jul 1, 2017 | Sep 30, 2017 | MCL | Yes | No | 11.1 MG/L | 10 mg/L | - | Resolved | Sep 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 11.7 MG/L | 10 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MCL | Yes | No | 11.7 MG/L | 10 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 11.7 MG/L | 10 mg/L | 10 | Resolved | Mar 31, 2017 | - | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 11.7 MG/L | 10 mg/L | 10 | Resolved | Mar 31, 2017 | - | |
| Jan 1, 2017 | Mar 31, 2017 | MCL | Yes | No | 11.7 MG/L | 10 mg/L | 10 | Resolved | Mar 31, 2017 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2016 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2016 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2016 | - | |
| 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 | - | |
| Oct 1, 2013 | Oct 31, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2013 | - | |
| Oct 1, 2013 | Oct 31, 2013 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2013 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Resolved | Aug 20, 2013 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Resolved | Aug 20, 2013 | - | |
| Dec 1, 2012 | Dec 31, 2012 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2012 | - | |
| Dec 1, 2012 | Dec 31, 2012 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2012 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | May 9, 2017 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | May 9, 2017 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2005 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2005 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2005 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2005 | - | |
| Oct 1, 2004 | Oct 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2004 | - | |
| Oct 1, 2004 | Oct 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2004 | - | |
| Oct 1, 2004 | Oct 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Nov 9, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Nov 9, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Nov 9, 2004 | - | |
| Jun 1, 2004 | Jun 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2004 | - | |
| Jun 1, 2004 | Jun 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2004 | - | |
| Jun 1, 2004 | Jun 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2004 | - | |
| Aug 1, 2003 | Aug 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2003 | - | |
| Aug 1, 2003 | Aug 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2003 | - | |
| Aug 1, 2003 | Aug 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2003 | - | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2003 | - | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2003 | - | |
| Jul 1, 2003 | Jul 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2003 | - | |
| May 1, 2003 | May 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2003 | - | |
| May 1, 2003 | May 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2003 | - | |
| May 1, 2003 | May 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2003 | - | |
| Nov 1, 2001 | Dec 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Aug 1, 1999 | Sep 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1999 | - | |
| Jun 1, 1999 | Jun 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 1999 | - |
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.