CASTLE AIRPORT
California — Community Water System — PWSID: CA2410700
System Information
| PWSID | CA2410700 |
| System Name | CASTLE AIRPORT |
| 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 | Mar 31, 1980 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | MERCED |
| ZIP Code | 95340 |
| Address | 2222 M Street |
| Organization | MIMMS, MARK |
| Phone | 209-385-7686 |
Population & Service
| Population Served | 1,650 |
| Service Connections | 134 |
Drinking Water Violations (14)
This water system has 14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 17, 2024 | — | LEAD AND COPPER RULE REVISIONS | RPT | No | No | — | — | — | Unaddressed | — | Lead and Copper Rule Revisions |
| Oct 17, 2024 | — | LEAD AND COPPER RULE REVISIONS | TT | Yes | No | — | — | — | Unaddressed | — | Lead and Copper Rule Revisions |
| Oct 1, 2021 | Oct 31, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2021 | Revised Total Coliform Rule |
| Oct 1, 2021 | Oct 31, 2021 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Oct 31, 2021 | Revised Total Coliform Rule |
| Jan 1, 2021 | Dec 31, 2021 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Nov 1, 2017 | Nov 30, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Nov 30, 2017 | Revised Total Coliform Rule |
| Nov 1, 2017 | Nov 30, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Nov 30, 2017 | Revised Total Coliform Rule |
| Jan 1, 1994 | Jan 31, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 1994 | Total Coliform Rule |
| Mar 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1993 | Total Coliform Rule |
| Mar 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1993 | Total Coliform Rule |
| Dec 1, 1989 | Dec 31, 1989 | Other | No | No | — | — | — | Archived | Dec 31, 1989 | 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.