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PublicWater Watch

City of San Bruno

Published drinking-water records and contacts for City of San Bruno. System CA4110023. Review sources and dates; not a real-time water assessment.

System ID
CA4110023
State or territory
CA
Published population served
42631
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/L2025-07-08SFWD Intertie / 4110023006
4:2 FTS< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
6:2 FTS< 0.005 µg/L0.005 µg/L2025-07-08SFWD Intertie / 4110023006
8:2 FTS< 0.005 µg/L0.005 µg/L2025-07-08SFWD Intertie / 4110023006
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-07-08SFWD Intertie / 4110023006
ADONA< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
HFPO-DA< 0.005 µg/L0.005 µg/L2025-07-08SFWD Intertie / 4110023006
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-07-08SFWD Intertie / 4110023006
NFDHA< 0.02 µg/L0.02 µg/L2025-07-08SFWD Intertie / 4110023006
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-07-08SFWD Intertie / 4110023006
PFBA< 0.005 µg/L0.005 µg/L2025-07-08SFWD Intertie / 4110023006
PFBS< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFDA< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFDoA< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFEESA< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFHpA< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFHpS< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFHxA< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFHxS< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFMBA< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFMPA< 0.004 µg/L0.004 µg/L2025-07-08SFWD Intertie / 4110023006
PFNA< 0.004 µg/L0.004 µg/L2025-07-08SFWD Intertie / 4110023006
PFOA< 0.004 µg/L0.004 µg/L2025-07-08SFWD Intertie / 4110023006
PFOS< 0.004 µg/L0.004 µg/L2025-07-08SFWD Intertie / 4110023006
PFPeA< 0.003 µg/L0.003 µg/L2025-07-08SFWD Intertie / 4110023006
PFPeS< 0.004 µg/L0.004 µg/L2025-07-08SFWD Intertie / 4110023006
PFTA< 0.008 µg/L0.008 µg/L2025-07-08SFWD Intertie / 4110023006
PFTrDA< 0.007 µg/L0.007 µg/L2025-07-08SFWD Intertie / 4110023006
PFUnA< 0.002 µg/L0.002 µg/L2025-07-08SFWD Intertie / 4110023006
lithium< 9 µg/L9 µg/L2025-07-08SFWD Intertie / 4110023006

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 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0.0024 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0.0032 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0.0018 mg/L2008-01-01 – 2010-12-312026Q3
Lead (PB90) 0.0022 mg/L2005-01-01 – 2007-12-312026Q3
Lead (PB90) 0.0019 mg/L2004-01-01 – 2004-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
TDS480 MG/L2026-06-02WELL 16 - FOREST LANE PARK / California DDW laboratory results
MANGANESE< 20.000000000 UG/L2026-06-02WELL 20 - TREATED (MN) / California DDW laboratory results
MANGANESE< 20.000000000 UG/L2026-06-02WELL 16 - TREATED / California DDW laboratory results
TDS460 MG/L2026-06-02WELL 16 - TREATED / California DDW laboratory results
TOTAL HALOACETIC ACIDS (HAA5)39.7 UG/L2026-05-12DBPR Sample / California DDW laboratory results
DIBROMOCHLOROMETHANE< 1.000000000 UG/L2026-05-12DBPR Sample / California DDW laboratory results
MONOBROMOACETIC ACID< 1.000000000 UG/L2026-05-12DBPR Sample / California DDW laboratory results
TOTAL HALOACETIC ACIDS (HAA5)34.3 UG/L2026-05-12DBPR Sample / California DDW laboratory results
DICHLOROACETIC ACID20.0 UG/L2026-05-12DBPR Sample / California DDW laboratory results
CHLOROFORM50.81 UG/L2026-05-12DBPR Sample / California DDW laboratory results
BROMODICHLOROMETHANE2.28 UG/L2026-05-12DBPR Sample / California DDW laboratory results
CHLOROFORM36.44 UG/L2026-05-12DBPR Sample / 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)

Lee, Matthew: 650-616-7075

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