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American Valley Csd

Published drinking-water records and contacts for American Valley Csd. System CA3210004. Review sources and dates; not a real-time water assessment.

System ID
CA3210004
State or territory
CA
Published population served
3778
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/L2024-11-06Well 1 / 14
4:2 FTS< 0.003 µg/L0.003 µg/L2024-11-06Bellamy Well / 2
6:2 FTS< 0.005 µg/L0.005 µg/L2024-11-06Well 9 / 19
8:2 FTS< 0.005 µg/L0.005 µg/L2024-11-06Bellamy Well / 2
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-11-06Well 4 / 16
ADONA< 0.003 µg/L0.003 µg/L2024-11-06Well 7 / 17
HFPO-DA< 0.005 µg/L0.005 µg/L2024-11-06Well 9 / 19
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-11-06Well 9 / 19
NFDHA< 0.02 µg/L0.02 µg/L2024-11-06Bellamy Well / 2
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-11-06High School Well / 4
PFBA< 0.005 µg/L0.005 µg/L2024-11-06Well 1 / 14
PFBS< 0.003 µg/L0.003 µg/L2024-11-06Boyle Well / 13
PFDA< 0.003 µg/L0.003 µg/L2024-11-06Bellamy Well / 2
PFDoA< 0.003 µg/L0.003 µg/L2024-11-06Boyle Well / 13
PFEESA< 0.003 µg/L0.003 µg/L2024-11-06Well 7 / 17
PFHpA< 0.003 µg/L0.003 µg/L2024-11-06Well 1 / 14
PFHpS< 0.003 µg/L0.003 µg/L2024-11-06Boyle Well / 13
PFHxA< 0.003 µg/L0.003 µg/L2024-11-06Well 8 / 18
PFHxS< 0.003 µg/L0.003 µg/L2024-11-06Well 8 / 18
PFMBA< 0.003 µg/L0.003 µg/L2024-11-06Bellamy Well / 2
PFMPA< 0.004 µg/L0.004 µg/L2024-11-06Claremont Springs / 1
PFNA< 0.004 µg/L0.004 µg/L2024-11-06Bellamy Well / 2
PFOA< 0.004 µg/L0.004 µg/L2024-11-06Claremont Springs / 1
PFOS< 0.004 µg/L0.004 µg/L2024-11-06Well 7 / 17
PFPeA< 0.003 µg/L0.003 µg/L2024-11-06Well 1 / 14
PFPeS< 0.004 µg/L0.004 µg/L2024-11-06Well 9 / 19
PFTA< 0.008 µg/L0.008 µg/L2024-11-06Well 9 / 19
PFTrDA< 0.007 µg/L0.007 µg/L2024-11-06Well 4 / 16
PFUnA< 0.002 µg/L0.002 µg/L2024-11-06Well 1 / 14
lithium< 9 µg/L9 µg/L2024-11-06High School Well / 4

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) 0.0003 mg/L2024-01-01 – 2026-12-312026Q3
Lead (PB90) 0.0011 mg/L2021-01-01 – 2023-12-312026Q3
Lead (PB90) 0 mg/L2018-01-01 – 2020-12-312026Q3
Lead (PB90) 0.0019 mg/L2015-01-01 – 2017-12-312026Q3
Lead (PB90) 0.0028 mg/L2012-01-01 – 2014-12-312026Q3
Lead (PB90) 0.0048 mg/L2009-01-01 – 2011-12-312026Q3
Lead (PB90) 0.005 mg/L2006-01-01 – 2008-12-312026Q3
Lead (PB90) 0.00713 mg/L2005-01-01 – 2007-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
ODOR< 1.000000000 TON2026-06-02HIGH SCHOOL WELL / California DDW laboratory results
1,2-DICHLOROPROPANE< 0.500000000 UG/L2026-05-19WELL 02 - BELLAMY / California DDW laboratory results
IRON< 50.000000000 UG/L2026-05-19WELL 08 / California DDW laboratory results
TOLUENE< 0.500000000 UG/L2026-05-19WELL 02 - BELLAMY / California DDW laboratory results
XYLENES, TOTAL< 0.500000000 UG/L2026-05-19WELL 02 - BELLAMY / California DDW laboratory results
METHYL TERT-BUTYL ETHER< 0.500000000 UG/L2026-05-19WELL 02 - BELLAMY / California DDW laboratory results
1,2,4-TRICHLOROBENZENE< 0.500000000 UG/L2026-05-19WELL 02 - BELLAMY / California DDW laboratory results
ETHYLBENZENE< 0.500000000 UG/L2026-05-19WELL 02 - BELLAMY / California DDW laboratory results
O-XYLENE< 0.500000000 UG/L2026-05-19WELL 02 - BELLAMY / California DDW laboratory results
NITRATE< 0.100000000 MG/L2026-05-19CLAREMONT SPRINGS / California DDW laboratory results
1,3-DICHLOROPROPENE< 0.500000000 UG/L2026-05-19WELL 02 - BELLAMY / California DDW laboratory results
NITRITE< 0.100000000 MG/L2026-05-19WELL 08 / 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
Lead and Copper Rule Revisions / Notification, Known or Potential LSL2025-07-02 – —UnaddressedNo2026Q3
Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR)2019-09-01 – 2019-09-30ResolvedYes2026Q3
Revised Total Coliform Rule / Maximum Contaminant Level Violation, E. coli (RTCR)2019-06-01 – 2019-06-30ResolvedYes2026Q3

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)

Nunn, Katie: 530-283-0836

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