MERCED, CA · Merced County
CASTLE AIRPORT Water System
Consumer Confidence Report status
CASTLE AIRPORT must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show 1 open health-based violation for CASTLE AIRPORT, alongside 1 other open item.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA2410700
- System type
- Community Water System
- Population served
- 1,650
- Service connections
- 134
- Ownership
- local government
- Water source
- groundwater (wells)
CASTLE AIRPORT is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 1,650 people from groundwater.
As of August 1, 2026, its federal record holds 9 entries between 1989 and 2024, of which 1 health-based item remains open, alongside 1 other open entry.
Of the 9, 5 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Total Coliform Rules, the Lead and Copper Rule, and the Stage 2 Disinfectants and Disinfection Byproducts Rule.
Violation history
LSL Inventory
Health-basedLEAD AND COPPER RULE REVISIONS
October 17, 2024
UnaddressedLSL Reporting
—LEAD AND COPPER RULE REVISIONS
October 17, 2024
UnaddressedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
October 1, 2021 – October 31, 2021
ResolvedMonitoring and Reporting (DBP)
—TTHM
January 1, 2021 – December 31, 2021
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2021 – December 31, 2021
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
November 1, 2017 – November 30, 2017
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
January 1, 1994 – January 31, 1994
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
March 1, 1993 – April 30, 1993
ResolvedNotification, Public
—No contaminant on record
December 1, 1989 – December 31, 1989
Archived
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 17, 2024 | LSL Inventory | LEAD AND COPPER RULE REVISIONS | Health-based | Unaddressed |
| October 17, 2024 | LSL Reporting | LEAD AND COPPER RULE REVISIONS | — | Unaddressed |
| October 1, 2021 – October 31, 2021 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| January 1, 2021 – December 31, 2021 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| January 1, 2021 – December 31, 2021 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| November 1, 2017 – November 30, 2017 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| January 1, 1994 – January 31, 1994 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| March 1, 1993 – April 30, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| December 1, 1989 – December 31, 1989 | Notification, Public | — | — | Archived |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- August 16, 2022State Compliance achieved2 linked violations
- March 24, 2022State Administrative/Compliance Order without penalty issued2 linked violations
- January 31, 2022State Compliance achieved1 linked violation
- January 10, 2022State Administrative/Compliance Order without penalty issued1 linked violation
- January 25, 2019State Compliance achieved1 linked violation
- October 11, 2018State Compliance achieved1 linked violation
- February 9, 2018State Formal Notice of Violation issued1 linked violation
- April 26, 1993State Formal Notice of Violation issued1 linked violation
Common questions
Is CASTLE AIRPORT required to publish a Consumer Confidence Report?
- Yes. CASTLE AIRPORT is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CASTLE AIRPORT’s next Consumer Confidence Report due?
- CASTLE AIRPORT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CASTLE AIRPORT have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show 1 open health-based violation for CASTLE AIRPORT, alongside 1 other open item.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
SPADE, TAMRA
209-385-7686
MERCED, CA 95340