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Castroville Community Services District

Published drinking-water records and contacts for Castroville Community Services District. System CA2710005. Review sources and dates; not a real-time water assessment.

System ID
CA2710005
State or territory
CA
Published population served
7515
System type (source code)
CWS

Published records and dates

Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.

Published testing results

Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.

“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example

EPA UCMR 5 — most recent imported sample per substance
SubstancePublished resultReporting limitSample dateSampling location
11Cl-PF3OUdS< 0.005 µg/L0.005 µg/L2025-11-03Site # 4 / WELL4
4:2 FTS< 0.003 µg/L0.003 µg/L2025-11-03Site # 2 / TANK2
6:2 FTS< 0.005 µg/L0.005 µg/L2025-11-03Site # 2 / TANK2
8:2 FTS< 0.005 µg/L0.005 µg/L2025-11-03Site # 2 / TANK2
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-11-03Site # 4 / WELL4
ADONA< 0.003 µg/L0.003 µg/L2025-11-03Site # 2 / TANK2
HFPO-DA< 0.005 µg/L0.005 µg/L2025-11-03Site # 4 / WELL4
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-11-03Site # 4 / WELL4
NFDHA< 0.02 µg/L0.02 µg/L2025-11-03Site # 4 / WELL4
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-11-03Site # 2 / TANK2
PFBA< 0.005 µg/L0.005 µg/L2025-11-03Site # 4 / WELL4
PFBS< 0.003 µg/L0.003 µg/L2025-11-03Site # 2 / TANK2
PFDA< 0.003 µg/L0.003 µg/L2025-11-03Site # 4 / WELL4
PFDoA< 0.003 µg/L0.003 µg/L2025-11-03Site # 4 / WELL4
PFEESA< 0.003 µg/L0.003 µg/L2025-11-03Site # 4 / WELL4
PFHpA< 0.003 µg/L0.003 µg/L2025-11-03Site # 4 / WELL4
PFHpS< 0.003 µg/L0.003 µg/L2025-11-03Site # 4 / WELL4
PFHxA< 0.003 µg/L0.003 µg/L2025-11-03Site # 4 / WELL4
PFHxS< 0.003 µg/L0.003 µg/L2025-11-03Site # 2 / TANK2
PFMBA< 0.003 µg/L0.003 µg/L2025-11-03Site # 2 / TANK2
PFMPA< 0.004 µg/L0.004 µg/L2025-11-03Site # 2 / TANK2
PFNA< 0.004 µg/L0.004 µg/L2025-11-03Site # 2 / TANK2
PFOA< 0.004 µg/L0.004 µg/L2025-11-03Site # 2 / TANK2
PFOS< 0.004 µg/L0.004 µg/L2025-11-03Site # 2 / TANK2
PFPeA< 0.003 µg/L0.003 µg/L2025-11-03Site # 4 / WELL4
PFPeS< 0.004 µg/L0.004 µg/L2025-11-03Site # 4 / WELL4
PFTA< 0.008 µg/L0.008 µg/L2025-11-03Site # 4 / WELL4
PFTrDA< 0.007 µg/L0.007 µg/L2025-11-03Site # 4 / WELL4
PFUnA< 0.002 µg/L0.002 µg/L2025-11-03Site # 2 / TANK2
lithium24.9 µg/L9 µg/L2025-11-03Site # 2 / TANK2

Download all EPA UCMR 5 records (CSV)

Lead and copper: 90th-percentile summaries

These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile

Eight most recent imported monitoring summaries
SubstancePublished 90th percentileMonitoring periodSource quarter
Lead (PB90) 0 mg/L2023-01-01 – 2025-12-312026Q3
Lead (PB90) 0 mg/L2020-01-01 – 2022-12-312026Q3
Lead (PB90) 0.0014 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0 mg/L2008-01-01 – 2010-12-312026Q3
Lead (PB90) 0 mg/L2007-01-01 – 2009-12-312026Q3
Lead (PB90) 0 mg/L2004-01-01 – 2006-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
ARSENIC19.4 UG/L2026-06-08WELL 05 - RAW / California DDW laboratory results
ARSENIC1.3 UG/L2026-06-08WELL 05 -AS WTP & CHLORINATION / California DDW laboratory results
ARSENIC< 1.000000000 UG/L2026-05-29WELL 05 -AS WTP & CHLORINATION / California DDW laboratory results
ARSENIC26.6 UG/L2026-05-29WELL 05 - RAW / California DDW laboratory results
ARSENIC3.5 UG/L2026-04-01WELL 02 - RAW / California DDW laboratory results
ARSENIC21.7 UG/L2026-04-01WELL 05 - RAW / California DDW laboratory results
ARSENIC12.3 UG/L2026-04-01WELL 05 -AS WTP & CHLORINATION / California DDW laboratory results
ARSENIC18.1 UG/L2026-03-05WELL 05 - RAW / California DDW laboratory results
ARSENIC10.4 UG/L2026-03-05WELL 05 -AS WTP & CHLORINATION / California DDW laboratory results
1,2,3-TRICHLOROPROPANE< 0.005000000 UG/L2026-01-12WELL 02 - RAW / California DDW laboratory results
RADIUM-226< 0.410000000 PCI/L2026-01-12WELL 02 - RAW / California DDW laboratory results
COMBINED RADIUM (-226 & -228)< 0.761000000 PCI/L2026-01-12WELL 02 - RAW / California DDW laboratory results

State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.

Download state records with source notes (CSV)

Published compliance history

3 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.

Twenty most recent imported compliance records
Rule / recordPeriodRecorded statusHealth-based (EPA classification)Source quarter
Arsenic Rule / Monitoring, Regular2026-02-01 – 2026-02-28ArchivedNo2026Q3
Stage 2 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP)2024-01-01 – 2024-12-31ArchivedNo2026Q3
Miscellaneous Other Rules / Notification, Public1988-01-01 – 1988-01-31ArchivedNo2026Q3

Source dates and refresh checks

A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.

Administrative contact (EPA filing)

Derbin, James: 831-633-2560

An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.

Official state resources · How to read these records