An independent public resourceEnglish Español
PublicWater Watch

Gswc - Claremont

Published drinking-water records and contacts for Gswc - Claremont. System CA1910024. Review sources and dates; not a real-time water assessment.

System ID
CA1910024
State or territory
CA
Published population served
39730
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/L2024-11-25Harrison Well 2 / 1910024806
4:2 FTS< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
6:2 FTS< 0.005 µg/L0.005 µg/L2024-11-25Harrison Well 2 / 1910024806
8:2 FTS< 0.005 µg/L0.005 µg/L2024-11-25Harrison Well 2 / 1910024806
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-11-25Harrison Well 2 / 1910024806
ADONA< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
HFPO-DA< 0.005 µg/L0.005 µg/L2024-11-25Harrison Well 2 / 1910024806
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-11-25Harrison Well 2 / 1910024806
NFDHA< 0.02 µg/L0.02 µg/L2024-11-25Harrison Well 2 / 1910024806
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-11-25Harrison Well 2 / 1910024806
PFBA< 0.005 µg/L0.005 µg/L2024-11-25Harrison Well 2 / 1910024806
PFBS< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFDA< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFDoA< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFEESA< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFHpA< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFHpS< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFHxA< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFHxS< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFMBA< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFMPA< 0.004 µg/L0.004 µg/L2024-11-25Harrison Well 2 / 1910024806
PFNA< 0.004 µg/L0.004 µg/L2024-11-25Harrison Well 2 / 1910024806
PFOA< 0.004 µg/L0.004 µg/L2024-11-25Harrison Well 2 / 1910024806
PFOS< 0.004 µg/L0.004 µg/L2024-11-25Harrison Well 2 / 1910024806
PFPeA< 0.003 µg/L0.003 µg/L2024-11-25Harrison Well 2 / 1910024806
PFPeS< 0.004 µg/L0.004 µg/L2024-11-25Harrison Well 2 / 1910024806
PFTA< 0.008 µg/L0.008 µg/L2024-11-25Harrison Well 2 / 1910024806
PFTrDA< 0.007 µg/L0.007 µg/L2024-11-25Harrison Well 2 / 1910024806
PFUnA< 0.002 µg/L0.002 µg/L2024-11-25Harrison Well 2 / 1910024806
lithium< 9 µg/L9 µg/L2024-11-25Harrison Well 2 / 1910024806

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) 0.0056 mg/L2024-01-01 – 2026-12-312026Q3
Lead (PB90) 0.0057 mg/L2025-07-01 – 2025-12-312026Q3
Lead (PB90) 0.0036 mg/L2025-01-01 – 2025-06-302026Q3
Lead (PB90) 0 mg/L2021-01-01 – 2023-12-312026Q3
Lead (PB90) 0.0033 mg/L2018-01-01 – 2020-12-312026Q3
Lead (PB90) 0.0017 mg/L2015-01-01 – 2017-12-312026Q3
Lead (PB90) 0.002 mg/L2012-01-01 – 2014-12-312026Q3
Lead (PB90) 0.005 mg/L2009-01-01 – 2011-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
NITRATE3.3 MG/L2026-07-13INDIAN HILL BLENDING RESERVOIR - TREATED / California DDW laboratory results
NITRATE4.4 MG/L2026-07-13INDIAN HILL WELL 03 / California DDW laboratory results
NITRATE0.36 MG/L2026-07-13TVMWD CONNECTION PM4 @ INDIAN HILL-TRTD / California DDW laboratory results
NITRATE8.7 MG/L2026-07-13INDIAN HILL WELL 04 / California DDW laboratory results
CHROMIUM7.0 UG/L2026-07-08DEL MONTE WELL 02 / California DDW laboratory results
CHROMIUM4.3 UG/L2026-07-08DEL MONTE - A1 EFF PORT - TREATED / California DDW laboratory results
CHROMIUM, HEX2.3 UG/L2026-07-08DEL MONTE - A2 EFF - TREATED / California DDW laboratory results
CHROMIUM, HEX7.1 UG/L2026-07-08DEL MONTE WELL 02 / California DDW laboratory results
CHROMIUM2.3 UG/L2026-07-08DEL MONTE - A2 EFF - TREATED / California DDW laboratory results
CHROMIUM, HEX4.5 UG/L2026-07-08DEL MONTE - A1 EFF PORT - TREATED / California DDW laboratory results
PERFLUOROOCTANE SULFONIC ACID 6:2 FTS< 2.000000000 NG/L2026-07-06INDIAN HILL BLENDING RESERVOIR - TREATED / California DDW laboratory results
HFPO-DA< 2.000000000 NG/L2026-07-06INDIAN HILL BLENDING RESERVOIR - TREATED / 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

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

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)

Zakhari, George: 760-515-8322

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