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City of Daly City

Published drinking-water records and contacts for City of Daly City. System CA4110013. Review sources and dates; not a real-time water assessment.

System ID
CA4110013
State or territory
CA
Published population served
104901
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.

Read the provider’s annual water quality report

Report link listed: 2026-10-05. This is not the report’s sampling date.

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/L2023-12-05MacDonald / 4110013815
4:2 FTS< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
6:2 FTS< 0.005 µg/L0.005 µg/L2023-12-05MacDonald / 4110013815
8:2 FTS< 0.005 µg/L0.005 µg/L2023-12-05MacDonald / 4110013815
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2023-12-05MacDonald / 4110013815
ADONA< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
HFPO-DA< 0.005 µg/L0.005 µg/L2023-12-05MacDonald / 4110013815
NEtFOSAA< 0.005 µg/L0.005 µg/L2023-11-01MacDonald / 4110013815
NFDHA< 0.02 µg/L0.02 µg/L2023-12-05MacDonald / 4110013815
NMeFOSAA< 0.006 µg/L0.006 µg/L2023-11-01Citrus Pump Station / 4110013811
PFBA< 0.005 µg/L0.005 µg/L2023-12-05MacDonald / 4110013815
PFBS< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFDA< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFDoA< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFEESA< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFHpA< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFHpS< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFHxA< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFHxS< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFMBA< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFMPA< 0.004 µg/L0.004 µg/L2023-12-05MacDonald / 4110013815
PFNA< 0.004 µg/L0.004 µg/L2023-12-05MacDonald / 4110013815
PFOA< 0.004 µg/L0.004 µg/L2023-12-05MacDonald / 4110013815
PFOS< 0.004 µg/L0.004 µg/L2023-12-05MacDonald / 4110013815
PFPeA< 0.003 µg/L0.003 µg/L2023-12-05MacDonald / 4110013815
PFPeS< 0.004 µg/L0.004 µg/L2023-12-05MacDonald / 4110013815
PFTA< 0.008 µg/L0.008 µg/L2023-11-01Park Plaza Turnout / 4110013814
PFTrDA< 0.007 µg/L0.007 µg/L2023-11-01Citrus Pump Station / 4110013811
PFUnA< 0.002 µg/L0.002 µg/L2023-12-05MacDonald / 4110013815
lithium< 9 µg/L9 µg/L2023-11-01Westlake Pump Station / 4110013812

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) 0.0071 mg/L2020-01-01 – 2022-12-312026Q3
Lead (PB90) 0 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0 mg/L2016-01-01 – 2018-12-312026Q3
Lead (PB90) 0 mg/L2013-01-01 – 2015-12-312026Q3
Lead (PB90) 0 mg/L2010-01-01 – 2012-12-312026Q3
Lead (PB90) 0 mg/L2005-01-01 – 2007-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
NITRATE2.7 MG/L2026-07-08CITRUS PUMP STATION - BLENDED - TREATED / California DDW laboratory results
NITRATE< 0.400000000 MG/L2026-07-08WESTLAKE PUMP STATION - BLENDED-TREATED / California DDW laboratory results
TTHM50.34 UG/L2026-07-03DBPR Sample / California DDW laboratory results
BROMODICHLOROMETHANE1.30 UG/L2026-07-03DBPR Sample / California DDW laboratory results
TTHM52.18 UG/L2026-07-03DBPR Sample / California DDW laboratory results
BROMODICHLOROMETHANE4.78 UG/L2026-07-03DBPR Sample / California DDW laboratory results
CHLOROFORM50.24 UG/L2026-07-03DBPR Sample / California DDW laboratory results
BROMODICHLOROMETHANE1.29 UG/L2026-07-03DBPR Sample / California DDW laboratory results
DIBROMOCHLOROMETHANE2.46 UG/L2026-07-03DBPR Sample / California DDW laboratory results
TTHM16.42 UG/L2026-07-03DBPR Sample / California DDW laboratory results
DIBROMOCHLOROMETHANE< 1.000000000 UG/L2026-07-03DBPR Sample / California DDW laboratory results
CHLOROFORM50.41 UG/L2026-07-03DBPR 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)

Cosgrove, Joshua: 650-991-8206

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