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City of Upland

Published drinking-water records and contacts for City of Upland. System CA3610050. Review sources and dates; not a real-time water assessment.

System ID
CA3610050
State or territory
CA
Published population served
78376
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/L2025-01-14Plant 4 / 3610050054
4:2 FTS< 0.003 µg/L0.003 µg/L2025-01-14Cucamonga Valley Water District / 3610050050
6:2 FTS< 0.005 µg/L0.005 µg/L2025-01-14Plant 6 / 3610050049
8:2 FTS< 0.005 µg/L0.005 µg/L2025-01-14Plant 4 / 3610050054
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2025-01-14SAWCO 24th & Campus / 3610050047
ADONA< 0.003 µg/L0.003 µg/L2025-01-14Plant 3 / 3610050053
HFPO-DA< 0.005 µg/L0.005 µg/L2025-01-14Plant 3 / 3610050053
NEtFOSAA< 0.005 µg/L0.005 µg/L2025-01-14Plant 3 / 3610050053
NFDHA< 0.02 µg/L0.02 µg/L2025-01-14Plant 6 / 3610050049
NMeFOSAA< 0.006 µg/L0.006 µg/L2025-01-14SAWCO 24th & Campus / 3610050047
PFBA< 0.005 µg/L0.005 µg/L2025-01-14Cucamonga Valley Water District / 3610050050
PFBS< 0.003 µg/L0.003 µg/L2025-01-14Plant 7 / 3610050052
PFDA< 0.003 µg/L0.003 µg/L2025-01-14Plant 4 / 3610050054
PFDoA< 0.003 µg/L0.003 µg/L2025-01-14Plant 6 / 3610050049
PFEESA< 0.003 µg/L0.003 µg/L2025-01-14Plant 6 / 3610050049
PFHpA< 0.003 µg/L0.003 µg/L2025-01-14Cucamonga Valley Water District / 3610050050
PFHpS< 0.003 µg/L0.003 µg/L2025-01-14Cucamonga Valley Water District / 3610050050
PFHxA< 0.003 µg/L0.003 µg/L2025-01-14Plant 4 / 3610050054
PFHxS< 0.003 µg/L0.003 µg/L2025-01-14Plant 3 / 3610050053
PFMBA< 0.003 µg/L0.003 µg/L2025-01-14Plant 3 / 3610050053
PFMPA< 0.004 µg/L0.004 µg/L2025-01-14Cucamonga Valley Water District / 3610050050
PFNA< 0.004 µg/L0.004 µg/L2025-01-14Plant 4 / 3610050054
PFOA< 0.004 µg/L0.004 µg/L2025-01-14Cucamonga Valley Water District / 3610050050
PFOS< 0.004 µg/L0.004 µg/L2025-01-14Plant 3 / 3610050053
PFPeA< 0.003 µg/L0.003 µg/L2025-01-14Cucamonga Valley Water District / 3610050050
PFPeS< 0.004 µg/L0.004 µg/L2025-01-14Plant 6 / 3610050049
PFTA< 0.008 µg/L0.008 µg/L2025-01-14Plant 3 / 3610050053
PFTrDA< 0.007 µg/L0.007 µg/L2025-01-14Plant 3 / 3610050053
PFUnA< 0.002 µg/L0.002 µg/L2025-01-14Plant 3 / 3610050053
lithium< 9 µg/L9 µg/L2025-01-14Plant 3 / 3610050053

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) 0.0016 mg/L2024-01-01 – 2026-12-312026Q3
Lead (PB90) 0 mg/L2021-01-01 – 2023-12-312026Q3
Lead (PB90) 0.0016 mg/L2020-01-01 – 2022-12-312026Q3
Lead (PB90) 0 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0.003 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0 mg/L2010-01-01 – 2010-12-312026Q3
Lead (PB90) 0.005 mg/L2006-01-01 – 2006-12-312026Q3
Lead (PB90) 0 mg/L2004-01-01 – 2006-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
NITRATE5.3 MG/L2026-07-14SAWCO ONE CONNECTION - PURCHASED / California DDW laboratory results
ETHYLENE DIBROMIDE< 0.010000000 UG/L2026-07-14WELL 08 / California DDW laboratory results
1,2-DIBROMO-3-CHLOROPROPANE0.032 UG/L2026-07-14PLANT 6 EFFLUENT / California DDW laboratory results
ETHYLENE DIBROMIDE< 0.010000000 UG/L2026-07-14PLANT 6 EFFLUENT / California DDW laboratory results
NITRATE12 MG/L2026-07-14WELL 08 / California DDW laboratory results
NITRATE-NITRITE4.7 MG/L2026-07-14PLANT 6 EFFLUENT / California DDW laboratory results
COPPER, FREE120 UG/L2026-07-14LCR Tap Sample / California DDW laboratory results
NITRITE< 0.100000000 MG/L2026-07-14WELL 08 / California DDW laboratory results
LEAD0.67 UG/L2026-07-14LCR Tap Sample / California DDW laboratory results
PERCHLORATE0.93 UG/L2026-07-14PLANT 6 EFFLUENT / California DDW laboratory results
NITRITE< 0.050000000 MG/L2026-07-14WELL 20 - TREATED / California DDW laboratory results
NITRITE< 0.050000000 MG/L2026-07-14PLANT 6 EFFLUENT / 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

2 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
Lead and Copper Rule / Follow-up Or Routine LCR Tap M/R2019-10-01 – —ResolvedNo2026Q3
Nitrate Rule / Maximum Contaminant Level Violation, Single Sample1987-08-01 – 1987-08-31ArchivedYes2026Q3

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)

Gonzales, Richard: 909-291-2966

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