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PublicWater Watch

City of Norco

Published drinking-water records and contacts for City of Norco. System CA3310025. Review sources and dates; not a real-time water assessment.

System ID
CA3310025
State or territory
CA
Published population served
25068
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/L2024-06-18MWD Intertie / 3310025014
4:2 FTS< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
6:2 FTS< 0.005 µg/L0.005 µg/L2024-06-18MWD Intertie / 3310025014
8:2 FTS< 0.005 µg/L0.005 µg/L2024-06-18MWD Intertie / 3310025014
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-06-18MWD Intertie / 3310025014
ADONA< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
HFPO-DA< 0.005 µg/L0.005 µg/L2024-06-18MWD Intertie / 3310025014
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-06-18MWD Intertie / 3310025014
NFDHA< 0.02 µg/L0.02 µg/L2024-06-18MWD Intertie / 3310025014
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-06-18MWD Intertie / 3310025014
PFBA< 0.005 µg/L0.005 µg/L2024-06-18MWD Intertie / 3310025014
PFBS< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFDA< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFDoA< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFEESA< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFHpA< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFHpS< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFHxA< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFHxS< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFMBA< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFMPA< 0.004 µg/L0.004 µg/L2024-06-18MWD Intertie / 3310025014
PFNA< 0.004 µg/L0.004 µg/L2024-06-18MWD Intertie / 3310025014
PFOA< 0.004 µg/L0.004 µg/L2024-06-18MWD Intertie / 3310025014
PFOS< 0.004 µg/L0.004 µg/L2024-06-18MWD Intertie / 3310025014
PFPeA< 0.003 µg/L0.003 µg/L2024-06-18MWD Intertie / 3310025014
PFPeS< 0.004 µg/L0.004 µg/L2024-06-18MWD Intertie / 3310025014
PFTA< 0.008 µg/L0.008 µg/L2024-06-18MWD Intertie / 3310025014
PFTrDA< 0.007 µg/L0.007 µg/L2024-06-18MWD Intertie / 3310025014
PFUnA< 0.002 µg/L0.002 µg/L2024-06-18MWD Intertie / 3310025014
lithium35.6 µg/L9 µg/L2024-06-18MWD Intertie / 3310025014

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/L2022-01-01 – 2024-12-312026Q3
Lead (PB90) 0 mg/L2019-01-01 – 2021-12-312026Q3
Lead (PB90) 0 mg/L2016-01-01 – 2018-12-312026Q3
Lead (PB90) 0 mg/L2013-01-01 – 2015-12-312026Q3
Lead (PB90) 0.0053 mg/L2010-01-01 – 2012-12-312026Q3
Lead (PB90) 0 mg/L2007-01-01 – 2009-12-312026Q3
Lead (PB90) 0.01 mg/L2004-01-01 – 2006-12-312026Q3
Lead (PB90) 0.01 mg/L2006-01-01 – 2006-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
MANGANESE280 UG/L2026-06-01WELL 13 / California DDW laboratory results
NITRATE< 0.400000000 MG/L2026-06-01WELL 13 / California DDW laboratory results
ARSENIC24 UG/L2026-06-01WELL 13 / California DDW laboratory results
IRON< 100.000000000 UG/L2026-06-01WELL 13 / California DDW laboratory results
FLUORIDE1.5 MG/L2026-06-01WELL 13 / California DDW laboratory results
MONOBROMOACETIC ACID< 1.000000000 UG/L2026-05-06DBPR Sample / California DDW laboratory results
DIBROMOCHLOROMETHANE2.7 UG/L2026-05-06DBPR Sample / California DDW laboratory results
DICHLOROACETIC ACID< 1.000000000 UG/L2026-05-06DBPR Sample / California DDW laboratory results
FLUORIDE1.4 MG/L2026-05-06WELL 13 / California DDW laboratory results
CHLOROFORM< 1.000000000 UG/L2026-05-06DBPR Sample / California DDW laboratory results
DIBROMOCHLOROMETHANE< 1.000000000 UG/L2026-05-06DBPR Sample / California DDW laboratory results
BROMOFORM2.1 UG/L2026-05-06DBPR 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

49 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
Stage 2 Disinfectants and Disinfection Byproducts Rule / Maximum Contaminant Level Violation, Average2025-07-01 – 2025-09-30ResolvedYes2026Q3
Arsenic Rule / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Nitrate Rule / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Inorganic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3
Synthetic Organic Chemicals / Monitoring, Regular2024-01-01 – 2024-12-31ResolvedNo2026Q3

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)

Nelson, Sam: 951-270-5677

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