An independent public resourceEnglish Español
PublicWater Watch

Irvine Ranch Water District

Published drinking-water records and contacts for Irvine Ranch Water District. System CA3010092. Review sources and dates; not a real-time water assessment.

System ID
CA3010092
State or territory
CA
Published population served
444800
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/L2025-07-15OPA Well Treatment Effluent / 3010092820
4:2 FTS< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
6:2 FTS< 0.005 µg/L0.005 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
8:2 FTS< 0.005 µg/L0.005 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
ADONA< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
HFPO-DA< 0.005 µg/L0.005 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
NFDHA< 0.02 µg/L0.02 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFBA0.0079 µg/L0.005 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFBS< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFDA< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFDoA< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFEESA< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFHpA< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFHpS< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFHxA< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFHxS< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFMBA< 0.003 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFMPA< 0.004 µg/L0.004 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFNA< 0.004 µg/L0.004 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFOA< 0.004 µg/L0.004 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFOS< 0.004 µg/L0.004 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFPeA0.0038 µg/L0.003 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFPeS< 0.004 µg/L0.004 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFTA< 0.008 µg/L0.008 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFTrDA< 0.007 µg/L0.007 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
PFUnA< 0.002 µg/L0.002 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820
lithium12.4669 µg/L9 µg/L2025-07-15OPA Well Treatment Effluent / 3010092820

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 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0 mg/L2008-01-01 – 2010-12-312026Q3
Lead (PB90) 0 mg/L2005-01-01 – 2007-12-312026Q3
Lead (PB90) 0 mg/L2002-01-01 – 2004-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
COMBINED URANIUM2.4 PCI/L2026-07-08IDP/PTP DESALTER TP-PLANT EFFLUENT / California DDW laboratory results
TURBIDITY0.15 NTU2026-06-30DRWF BLENDING (DRWF TM)-WC SAMPLE PT / California DDW laboratory results
ARSENIC9.53 UG/L2026-06-30WELL 05 / California DDW laboratory results
TEMPERATURE (CENTIGRADE)25.8 C2026-06-30DRWF BLENDING (DRWF TM)-WC SAMPLE PT / California DDW laboratory results
TDS240 MG/L2026-06-30DRWF BLENDING (DRWF TM)-WC SAMPLE PT / California DDW laboratory results
ODOR< 1.000000000 TON2026-06-30DRWF BLENDING (DRWF TM)-WC SAMPLE PT / California DDW laboratory results
1,4-DIOXANE< 1.000000000 UG/L2026-06-30WELL 11 / California DDW laboratory results
MANGANESE< 20.000000000 UG/L2026-06-30WELL 05 / California DDW laboratory results
COLOR< 3.000000000 UNITS2026-06-30WELL 17 / California DDW laboratory results
COLOR5 UNITS2026-06-30WELL 01 / California DDW laboratory results
COLOR13 UNITS2026-06-30WELL 11 / California DDW laboratory results
1,4-DIOXANE< 1.000000000 UG/L2026-06-30DRWF BLENDING (DRWF TM)-WC SAMPLE PT / 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

1 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
Revised Total Coliform Rule / Monitoring, Routine (RTCR)2020-09-01 – 2020-09-30ResolvedNo2026Q3

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)

Rigby, Lori: 949-453-5344

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