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PublicWater Watch

City of Rohnert Park

Published drinking-water records and contacts for City of Rohnert Park. System CA4910014. Review sources and dates; not a real-time water assessment.

System ID
CA4910014
State or territory
CA
Published population served
43821
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/L2024-10-22Well 27 / 4910014812
4:2 FTS< 0.003 µg/L0.003 µg/L2024-10-22Well 29 / 4910014811
6:2 FTS< 0.005 µg/L0.005 µg/L2024-10-22Well 14 / 4910014821
8:2 FTS< 0.005 µg/L0.005 µg/L2024-10-22Well 27 / 4910014812
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2024-10-22Well 27 / 4910014812
ADONA< 0.003 µg/L0.003 µg/L2024-10-22Well 27 / 4910014812
HFPO-DA< 0.005 µg/L0.005 µg/L2024-10-22Well 29 / 4910014811
NEtFOSAA< 0.005 µg/L0.005 µg/L2024-10-22Well 35 / 4910014806
NFDHA< 0.02 µg/L0.02 µg/L2024-10-22Well 29 / 4910014811
NMeFOSAA< 0.006 µg/L0.006 µg/L2024-10-22Well 14 / 4910014821
PFBA< 0.005 µg/L0.005 µg/L2024-10-22Well 27 / 4910014812
PFBS< 0.003 µg/L0.003 µg/L2024-10-22Well 27 / 4910014812
PFDA< 0.003 µg/L0.003 µg/L2024-10-22Well 14 / 4910014821
PFDoA< 0.003 µg/L0.003 µg/L2024-10-22Well 29 / 4910014811
PFEESA< 0.003 µg/L0.003 µg/L2024-10-22Well 29 / 4910014811
PFHpA< 0.003 µg/L0.003 µg/L2024-10-22Well 35 / 4910014806
PFHpS< 0.003 µg/L0.003 µg/L2024-10-22Well 29 / 4910014811
PFHxA< 0.003 µg/L0.003 µg/L2024-10-22Well 29 / 4910014811
PFHxS< 0.003 µg/L0.003 µg/L2024-10-22Well 29 / 4910014811
PFMBA< 0.003 µg/L0.003 µg/L2024-10-22Well 14 / 4910014821
PFMPA< 0.004 µg/L0.004 µg/L2024-10-22Well 27 / 4910014812
PFNA< 0.004 µg/L0.004 µg/L2024-10-22Well 14 / 4910014821
PFOA< 0.004 µg/L0.004 µg/L2024-10-22Well 29 / 4910014811
PFOS< 0.004 µg/L0.004 µg/L2024-10-22Well 14 / 4910014821
PFPeA< 0.003 µg/L0.003 µg/L2024-10-22Well 35 / 4910014806
PFPeS< 0.004 µg/L0.004 µg/L2024-10-22Well 29 / 4910014811
PFTA< 0.008 µg/L0.008 µg/L2024-10-22Well 27 / 4910014812
PFTrDA< 0.007 µg/L0.007 µg/L2024-10-22Well 27 / 4910014812
PFUnA< 0.002 µg/L0.002 µg/L2024-10-22Well 29 / 4910014811
lithium14 µg/L9 µg/L2024-10-22Well 27 / 4910014812

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) 0.0031 mg/L2010-01-01 – 2012-12-312026Q3
Lead (PB90) 0.002 mg/L2007-01-01 – 2009-12-312026Q3
Lead (PB90) 0.0017 mg/L2004-01-01 – 2006-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
PERFLUOROHEPTANESULFONIC ACID (PFHPS)< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
ADONA< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
PERFLUORO PFMPA< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
PERFLUORONONANOIC ACID (PFNA)< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
HFPO-DA< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
PERFLUOROHEXANE SULFONIC ACID (PFHxS)3.3 NG/L2026-05-29WELL 01 / California DDW laboratory results
PERFLUOROUNDECANOIC ACID (PFUNA)< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
9CL-PF3ONS< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
PERFLUORO PFMBA< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
PERFLUORODODECANOIC ACID (PFDOA)< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
PERFLUOROCTANE SULFONIC ACID (PFOS)< 2.000000000 NG/L2026-05-29WELL 01 / California DDW laboratory results
NONAFLUORO NFDHA< 2.000000000 NG/L2026-05-29WELL 01 / 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

276 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)2021-07-01 – 2021-07-31ResolvedNo2026Q3
Arsenic Rule / Monitoring, Regular2021-04-01 – 2021-06-30ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3
Volatile Organic Chemicals / Monitoring, Regular2017-01-01 – 2017-12-31ResolvedNo2026Q3

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)

Hendersen, Mark: 707-588-3316

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