HERITAGE RANCH CSD
California — Community Water System — PWSID: CA4010012
System Information
| PWSID | CA4010012 |
| System Name | HERITAGE RANCH CSD |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | PASO ROBLES |
| ZIP Code | 93446 |
| Address | 4870 Heritage Road |
| Organization | DUFFIELD, SCOTT |
| Phone | 805-227-6230 |
Population & Service
| Population Served | 2,956 |
| Service Connections | 1,963 |
Drinking Water Violations (38)
This water system has 38 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, 2024 | Mar 31, 2024 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2024 | — | |
| Jan 1, 2024 | Mar 31, 2024 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2024 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MCL | Yes | No | .067 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2023 | — | |
| Oct 1, 2023 | Dec 31, 2023 | MCL | Yes | No | .067 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2023 | — | |
| Jul 1, 2023 | Sep 30, 2023 | MCL | Yes | No | .076 MG/L | 0.060 mg/L | .06 | Resolved | Sep 30, 2023 | — | |
| Jul 1, 2023 | Sep 30, 2023 | MCL | Yes | No | .076 MG/L | 0.060 mg/L | .06 | Resolved | Sep 30, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .082 MG/L | 0.060 mg/L | .06 | Resolved | Jun 30, 2023 | — | |
| Apr 1, 2023 | Jun 30, 2023 | MCL | Yes | No | .082 MG/L | 0.060 mg/L | .06 | Resolved | Jun 30, 2023 | — | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .097 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2023 | — | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .097 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2023 | — | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2023 | — | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Mar 31, 2023 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .086 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .113 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .113 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2022 | — | |
| Oct 1, 2022 | Dec 31, 2022 | MCL | Yes | No | .086 MG/L | 0.080 mg/L | .08 | Resolved | Dec 31, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .093 MG/L | 0.060 mg/L | .06 | Resolved | Sep 30, 2022 | — | |
| Jul 1, 2022 | Sep 30, 2022 | MCL | Yes | No | .093 MG/L | 0.060 mg/L | .06 | Resolved | Sep 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .083 MG/L | 0.060 mg/L | .06 | Resolved | Jun 30, 2022 | — | |
| Apr 1, 2022 | Jun 30, 2022 | MCL | Yes | No | .083 MG/L | 0.060 mg/L | .06 | Resolved | Jun 30, 2022 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .074 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2020 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MCL | Yes | No | .074 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .079 MG/L | 0.060 mg/L | .06 | Resolved | Sep 30, 2020 | — | |
| Jul 1, 2020 | Sep 30, 2020 | MCL | Yes | No | .079 MG/L | 0.060 mg/L | .06 | Resolved | Sep 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .078 MG/L | 0.060 mg/L | .06 | Resolved | Jun 30, 2020 | — | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .078 MG/L | 0.060 mg/L | .06 | Resolved | Jun 30, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .0701 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .0701 MG/L | 0.060 mg/L | .06 | Resolved | Mar 31, 2020 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .067 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .067 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2019 | — | |
| Jan 1, 2012 | Jan 31, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | — | |
| Jan 1, 2012 | Jan 31, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2012 | — | |
| Oct 1, 2010 | Dec 31, 2010 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2010 | — | |
| Oct 1, 2010 | Dec 31, 2010 | MCL | Yes | No | .062 MG/L | 0.060 mg/L | .06 | Resolved | Dec 31, 2010 | — | |
| Apr 1, 1995 | Apr 30, 1995 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 1995 | — | |
| Apr 1, 1995 | Apr 30, 1995 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 1995 | — | |
| Jul 1, 1993 | Jul 31, 1993 | TT | Yes | No | — | — | — | Resolved | May 29, 1991 | — | |
| Jul 1, 1993 | Jul 31, 1993 | TT | Yes | No | — | — | — | Resolved | May 29, 1991 | — |
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.