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PublicWater Watch

City of Los Banos

Published drinking-water records and contacts for City of Los Banos. System CA2410005. Review sources and dates; not a real-time water assessment.

System ID
CA2410005
State or territory
CA
Published population served
47419
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/L2025-03-20Well 10 / 2410005807
4:2 FTS< 0.003 µg/L0.003 µg/L2025-03-20Well 5 / 2410005811
6:2 FTS< 0.005 µg/L0.005 µg/L2025-03-20Well 12 / 2410005801
8:2 FTS< 0.005 µg/L0.005 µg/L2025-03-20Well 14 / 2410005804
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-03-20Well 11 / 2410005806
ADONA< 0.003 µg/L0.003 µg/L2025-03-20Well 1 / 2410005814
HFPO-DA< 0.005 µg/L0.005 µg/L2025-03-20Well 14 / 2410005804
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-03-20Well 14 / 2410005804
NFDHA< 0.02 µg/L0.02 µg/L2025-03-20Well 14 / 2410005804
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-03-20Well 3 / 2410005812
PFBA< 0.005 µg/L0.005 µg/L2025-03-20Well 2 / 2410005813
PFBS< 0.003 µg/L0.003 µg/L2025-03-20Well 10 / 2410005807
PFDA< 0.003 µg/L0.003 µg/L2025-03-20Well 9 / 2410005808
PFDoA< 0.003 µg/L0.003 µg/L2025-03-20Well 7 / 2410005809
PFEESA< 0.003 µg/L0.003 µg/L2025-03-20Well 5 / 2410005811
PFHpA< 0.003 µg/L0.003 µg/L2025-03-20Well 7 / 2410005809
PFHpS< 0.003 µg/L0.003 µg/L2025-03-20Well 11 / 2410005806
PFHxA< 0.003 µg/L0.003 µg/L2025-03-20Well 9 / 2410005808
PFHxS< 0.003 µg/L0.003 µg/L2025-03-20Well 5 / 2410005811
PFMBA< 0.003 µg/L0.003 µg/L2025-03-20Well 11 / 2410005806
PFMPA< 0.004 µg/L0.004 µg/L2025-03-20Well 10 / 2410005807
PFNA< 0.004 µg/L0.004 µg/L2025-03-20Well 9 / 2410005808
PFOA< 0.004 µg/L0.004 µg/L2025-03-20Well 6 / 2410005810
PFOS< 0.004 µg/L0.004 µg/L2025-03-20Well 2 / 2410005813
PFPeA< 0.003 µg/L0.003 µg/L2025-03-20Well 9 / 2410005808
PFPeS< 0.004 µg/L0.004 µg/L2025-03-20Well 6 / 2410005810
PFTA< 0.008 µg/L0.008 µg/L2025-03-20Well 11 / 2410005806
PFTrDA< 0.007 µg/L0.007 µg/L2025-03-20Well 10 / 2410005807
PFUnA< 0.002 µg/L0.002 µg/L2025-03-20Well 13 / 2410005805
lithium15.6 µg/L9 µg/L2025-03-20Well 2 / 2410005813

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/L2024-01-01 – 2026-12-312026Q3
Lead (PB90) 0 mg/L2021-01-01 – 2023-12-312026Q3
Lead (PB90) 0 mg/L2018-01-01 – 2020-12-312026Q3
Lead (PB90) 0 mg/L2015-01-01 – 2017-12-312026Q3
Lead (PB90) 0 mg/L2012-01-01 – 2014-12-312026Q3
Lead (PB90) 0 mg/L2009-01-01 – 2011-12-312026Q3
Lead (PB90) 0.0025 mg/L2006-01-01 – 2008-12-312026Q3
Lead (PB90) 0.0025 mg/L2005-01-01 – 2005-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
PERFLUORO PFEESA< 2.000000000 NG/L2026-07-08WELL 09 / California DDW laboratory results
PERFLUOROPENTANESULFONIC ACID (PFPES)< 2.000000000 NG/L2026-07-08WELL 10 / California DDW laboratory results
NMEFOSAA< 5.000000000 NG/L2026-07-08WELL 01 / California DDW laboratory results
PERFLUOROBUTANE SULFONIC ACID (PFBS)< 2.000000000 NG/L2026-07-08WELL 13 - RAW / California DDW laboratory results
9CL-PF3ONS< 2.000000000 NG/L2026-07-08WELL 07-STBY / California DDW laboratory results
PERFLUOROOCTANE SULFONIC ACID 6:2 FTS< 5.000000000 NG/L2026-07-08WELL 15 / California DDW laboratory results
PERFLUOROPENTANOIC ACID (PFPEA)< 2.000000000 NG/L2026-07-08WELL 14 - RAW / California DDW laboratory results
PERFLUOROTETRADECANOIC ACID (PFTA)< 2.000000000 NG/L2026-07-08WELL 03 / California DDW laboratory results
PERFLUORONONANOIC ACID (PFNA)< 2.000000000 NG/L2026-07-08WELL 15 / California DDW laboratory results
11CL-PF3OUDS< 2.000000000 NG/L2026-07-08WELL 14 - RAW / California DDW laboratory results
PERFLUORO PFMPA< 2.000000000 NG/L2026-07-08WELL 15 / California DDW laboratory results
PERFLUOROBUTANOIC ACID (PFBA)< 2.000000000 NG/L2026-07-08WELL 09 / 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

2 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 / LSL Inventory2024-10-17 – —ResolvedYes2026Q3
Lead and Copper Rule Revisions / LSL Reporting2024-10-17 – —ResolvedNo2026Q3

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)

Via, William: 209-827-2466

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