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Signal Hill - City, Water Dept.

Published drinking-water records and contacts for Signal Hill - City, Water Dept.. System CA1910149. Review sources and dates; not a real-time water assessment.

System ID
CA1910149
State or territory
CA
Published population served
11848
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/L2024-07-24MWD Connection / 1910149007
4:2 FTS< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
6:2 FTS< 0.005 µg/L0.005 µg/L2024-07-24MWD Connection / 1910149007
8:2 FTS< 0.005 µg/L0.005 µg/L2024-07-24MWD Connection / 1910149007
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-07-24MWD Connection / 1910149007
ADONA< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
HFPO-DA< 0.005 µg/L0.005 µg/L2024-07-24MWD Connection / 1910149007
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-07-24MWD Connection / 1910149007
NFDHA< 0.02 µg/L0.02 µg/L2024-07-24MWD Connection / 1910149007
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-07-24MWD Connection / 1910149007
PFBA< 0.005 µg/L0.005 µg/L2024-07-24MWD Connection / 1910149007
PFBS< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFDA< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFDoA< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFEESA< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFHpA< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFHpS< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFHxA< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFHxS< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFMBA< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFMPA< 0.004 µg/L0.004 µg/L2024-07-24MWD Connection / 1910149007
PFNA< 0.004 µg/L0.004 µg/L2024-07-24MWD Connection / 1910149007
PFOA< 0.004 µg/L0.004 µg/L2024-07-24MWD Connection / 1910149007
PFOS< 0.004 µg/L0.004 µg/L2024-07-24MWD Connection / 1910149007
PFPeA< 0.003 µg/L0.003 µg/L2024-07-24MWD Connection / 1910149007
PFPeS< 0.004 µg/L0.004 µg/L2024-07-24MWD Connection / 1910149007
PFTA< 0.008 µg/L0.008 µg/L2024-07-24MWD Connection / 1910149007
PFTrDA< 0.007 µg/L0.007 µg/L2024-07-24MWD Connection / 1910149007
PFUnA< 0.002 µg/L0.002 µg/L2024-07-24MWD Connection / 1910149007
lithium42 µg/L9 µg/L2024-07-24MWD Connection / 1910149007

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) 0.0029 mg/L2024-01-01 – 2026-12-312026Q3
Lead (PB90) 0.0066 mg/L2021-01-01 – 2023-12-312026Q3
Lead (PB90) 0.0041 mg/L2020-01-01 – 2022-12-312026Q3
Lead (PB90) 0.0036 mg/L2017-01-01 – 2019-12-312026Q3
Lead (PB90) 0.0058 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0.0079 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0 mg/L2008-01-01 – 2010-12-312026Q3
Lead (PB90) 0.008 mg/L2005-01-01 – 2007-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
BENZENE0.58 UG/L2026-06-25WELL 09 / California DDW laboratory results
BENZENE2.2 UG/L2026-05-21WELL 09 / California DDW laboratory results
NITRATE< 0.400000000 MG/L2026-04-17WELL 10 / California DDW laboratory results
CONDUCTIVITY @ 25 C UMHOS/CM450 UMHO/CM2026-04-17WELL 10 / California DDW laboratory results
1,2,3-TRICHLOROPROPANE< 0.005000000 UG/L2026-04-17WELL 09 / California DDW laboratory results
LEAD< 5.000000000 UG/L2026-04-17WELL 10 / California DDW laboratory results
PERFLUORONONANOIC ACID (PFNA)< 1.800000000 NG/L2026-04-17WELL 09 / California DDW laboratory results
HFPO-DA< 1.800000000 NG/L2026-04-17WELL 09 / California DDW laboratory results
MERCURY< 1.000000000 UG/L2026-04-17WELL 10 / California DDW laboratory results
1,2-DICHLOROETHANE< 0.500000000 UG/L2026-04-17WELL 10 / California DDW laboratory results
O-DICHLOROBENZENE< 0.500000000 UG/L2026-04-17WELL 10 / California DDW laboratory results
1,1-DICHLOROETHYLENE< 0.500000000 UG/L2026-04-17WELL 10 / 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

8 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
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)2025-04-01 – 2025-04-30ResolvedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)2025-03-01 – 2025-03-31ResolvedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)2025-02-01 – 2025-02-28ResolvedYes2026Q3
Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R2023-10-01 – —ResolvedNo2026Q3
Consumer Confidence Rule / Consumer Confidence Report Complete Failure to Report2023-07-01 – —ResolvedNo2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)2022-05-01 – 2022-05-31ResolvedYes2026Q3
Surface Water Treatment Rule / Treatment Technique (SWTR and GWR)2022-03-01 – 2022-03-31ResolvedYes2026Q3
Miscellaneous Other Rules / Notification, Public1989-02-01 – 1989-02-28ArchivedNo2026Q3

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)

Luna, Gabino: 562-989-7300

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