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PublicWater Watch

City of Mountain View

Published drinking-water records and contacts for City of Mountain View. System CA4310007. Review sources and dates; not a real-time water assessment.

System ID
CA4310007
State or territory
CA
Published population served
81501
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/L2023-12-06SFPUC Intertie / 4310007806
4:2 FTS< 0.003 µg/L0.003 µg/L2023-12-06SFPUC Intertie / 4310007806
6:2 FTS< 0.005 µg/L0.005 µg/L2023-12-06SFPUC Intertie / 4310007806
8:2 FTS< 0.005 µg/L0.005 µg/L2023-12-06SFPUC Intertie / 4310007806
9Cl-PF3ONS< 0.002 µg/L0.002 µg/L2023-12-06SCVWD Intertie / 4310007805
ADONA< 0.003 µg/L0.003 µg/L2023-12-06SFPUC Intertie / 4310007806
HFPO-DA< 0.005 µg/L0.005 µg/L2023-12-06SFPUC Intertie / 4310007806
NEtFOSAA< 0.005 µg/L0.005 µg/L2023-12-06SCVWD Intertie / 4310007805
NFDHA< 0.02 µg/L0.02 µg/L2023-12-06SFPUC Intertie / 4310007806
NMeFOSAA< 0.006 µg/L0.006 µg/L2023-12-06SFPUC Intertie / 4310007806
PFBA< 0.005 µg/L0.005 µg/L2023-12-06SCVWD Intertie / 4310007805
PFBS< 0.003 µg/L0.003 µg/L2023-12-06SFPUC Intertie / 4310007806
PFDA< 0.003 µg/L0.003 µg/L2023-12-06SCVWD Intertie / 4310007805
PFDoA< 0.003 µg/L0.003 µg/L2023-12-06SCVWD Intertie / 4310007805
PFEESA< 0.003 µg/L0.003 µg/L2023-12-06SFPUC Intertie / 4310007806
PFHpA< 0.003 µg/L0.003 µg/L2023-12-06SCVWD Intertie / 4310007805
PFHpS< 0.003 µg/L0.003 µg/L2023-12-06SCVWD Intertie / 4310007805
PFHxA< 0.003 µg/L0.003 µg/L2023-12-06SCVWD Intertie / 4310007805
PFHxS< 0.003 µg/L0.003 µg/L2023-12-06SCVWD Intertie / 4310007805
PFMBA< 0.003 µg/L0.003 µg/L2023-12-06SFPUC Intertie / 4310007806
PFMPA< 0.004 µg/L0.004 µg/L2023-12-06SCVWD Intertie / 4310007805
PFNA< 0.004 µg/L0.004 µg/L2023-12-06SFPUC Intertie / 4310007806
PFOA< 0.004 µg/L0.004 µg/L2023-12-06SCVWD Intertie / 4310007805
PFOS< 0.004 µg/L0.004 µg/L2023-12-06SFPUC Intertie / 4310007806
PFPeA< 0.003 µg/L0.003 µg/L2023-12-06SCVWD Intertie / 4310007805
PFPeS< 0.004 µg/L0.004 µg/L2023-12-06SFPUC Intertie / 4310007806
PFTA< 0.008 µg/L0.008 µg/L2023-12-06SCVWD Intertie / 4310007805
PFTrDA< 0.007 µg/L0.007 µg/L2023-12-06SFPUC Intertie / 4310007806
PFUnA< 0.002 µg/L0.002 µg/L2023-12-06SFPUC Intertie / 4310007806
lithium< 9 µg/L9 µg/L2023-12-06SFPUC Intertie / 4310007806

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) 0.0077 mg/L2014-01-01 – 2016-12-312026Q3
Lead (PB90) 0.0076 mg/L2011-01-01 – 2013-12-312026Q3
Lead (PB90) 0.0076 mg/L2013-01-01 – 2013-12-312026Q3
Lead (PB90) 0 mg/L2008-01-01 – 2010-12-312026Q3
Lead (PB90) 0 mg/L2005-01-01 – 2007-12-312026Q3
Twelve most recent imported state laboratory records
SubstancePublished resultSample dateLocation / source
HYDROXIDE AS CALCIUM CARBONATE< 5.000000000 MG/L2026-06-03WELL NO. 19 / California DDW laboratory results
NICKEL< 10.000000000 UG/L2026-06-03WELL NO. 19 / California DDW laboratory results
CYANIDE< 100.000000000 UG/L2026-06-03WELL NO. 19 / California DDW laboratory results
CADMIUM< 1.000000000 UG/L2026-06-03WELL NO. 19 / California DDW laboratory results
TURBIDITY< 0.500000000 NTU2026-06-03WELL 22 / California DDW laboratory results
POTASSIUM1.3 MG/L2026-06-03WELL 22 / California DDW laboratory results
FOAMING AGENTS (SURFACTANTS)< 0.050000000 MG/L2026-06-03WELL 22 / California DDW laboratory results
MAGNESIUM21 MG/L2026-06-03WELL 22 / California DDW laboratory results
THALLIUM, TOTAL< 1.000000000 UG/L2026-06-03WELL NO. 19 / California DDW laboratory results
SULFATE30 MG/L2026-06-03WELL NO. 19 / California DDW laboratory results
PERCHLORATE< 1.000000000 UG/L2026-06-03WELL 22 / California DDW laboratory results
ZINC< 50.000000000 UG/L2026-06-03WELL NO. 19 / 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
Miscellaneous Other Rules / Notification, Public1988-11-01 – 1988-11-30ArchivedNo2026Q3

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)

Au, Lisa: 650-903-6140

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