MCARTHUR MOBILEHOME PARK
California - Community Water System - PWSID: CA4500084
System Information
| PWSID | CA4500084 |
| System Name | MCARTHUR MOBILEHOME PARK |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Non-Inventory |
| 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 | ORINDA |
| ZIP Code | 94563 |
| Address | 452 MORAGA WAY |
| Organization | PETERSON, ROBERT |
| Phone | 925-254-6189 |
Population & Service
| Population Served | 99 |
| Service Connections | 41 |
Drinking Water Violations (22)
This water system has 22 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2014 | Jun 30, 2014 | MCL | Yes | No | 55.4 MG/L | 10 mg/L | 45 | Resolved | Jun 30, 2014 | - | |
| Apr 1, 2014 | Jun 30, 2014 | MCL | Yes | No | 55.4 MG/L | 10 mg/L | 45 | Resolved | Jun 30, 2014 | - | |
| Apr 1, 2014 | Jun 30, 2014 | MCL | Yes | No | 55.4 MG/L | 10 mg/L | 45 | Resolved | Jun 30, 2014 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | 52.6 MG/L | 10 mg/L | 45 | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | 52.6 MG/L | 10 mg/L | 45 | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | 52.6 MG/L | 10 mg/L | 45 | Resolved | Sep 30, 2013 | - | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | 52.6 MG/L | 10 mg/L | 45 | Resolved | Sep 30, 2013 | - | |
| Nov 1, 2011 | Nov 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2011 | - | |
| Nov 1, 2011 | Nov 30, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 12, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 12, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 12, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 12, 2011 | - | |
| Sep 1, 2011 | Sep 30, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 12, 2011 | - | |
| Jul 1, 1993 | Dec 31, 2003 | MR | No | No | - | TT | - | Resolved | Dec 31, 2003 | - | |
| Jul 1, 1984 | Jul 31, 1984 | Other | No | No | - | - | - | Archived | Jul 31, 1984 | - | |
| Jan 1, 1983 | Jan 31, 1983 | Other | No | No | - | - | - | Archived | Jan 31, 1983 | - | |
| Nov 1, 1982 | Nov 30, 1982 | Other | No | No | - | - | - | Archived | Nov 30, 1982 | - | |
| Oct 1, 1982 | Oct 31, 1982 | Other | No | No | - | - | - | Archived | Oct 31, 1982 | - | |
| Oct 1, 1981 | Sep 30, 1982 | MR | No | Yes | - | 15 pCi/L | - | Archived | Sep 30, 1982 | - | |
| Oct 30, 1980 | Oct 29, 1981 | MR | No | Yes | - | 15 pCi/L | - | Archived | Oct 29, 1981 | - | |
| - | - | - | 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.