California Water Service Co - Westlake Water System

MyTapWater.org's tap water quality report is the compilation of data collected from federal, state, and local government agencies, most prominently the EPA. We strive to populate the report with the latest data concerning water contaminants, lead and copper levels, and water quality violations. We only collect drinking water data from public water systems.

PWS Service Information
PWS ID: CA5610016
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 19,456 		Contact Information
JAMES, SOPHIE
JAMES, SOPHIE
1720 NORTH FIRST STREET
SAN JOSE, CA 95112-4508
[email protected]

This public water system services 1 county.

Summary Results

A summary view of tests in which a water contaminant found to exceed the Maximum Contaminant Level (MCL) set by the EPA.

Maximum Contaminant Levels Exceeded (by year):

2013   (0) 2014   (0) 2015   (0) 2016   (0) 2017   (0) 2018   (3)
anatoxin-a
cylindrospermopsin
total microcystin

Contaminant Detailed Results

This a view of violations of maximum contaminant levels. Use the expanded view see result data for a drinking water contaminant, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).

anatoxin-a

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-07-16 0.03 0.00 < 0.03
2018 2018-07-02 0.03 0.00 < 0.03
2018 2018-06-18 0.03 0.00 < 0.03
2018 2018-06-04 0.03 0.00 < 0.03
2018 2018-05-21 0.03 0.00 < 0.03
2018 2018-05-07 0.03 0.00 < 0.03
2018 2018-04-16 0.03 0.00 < 0.03
2018 2018-04-02 0.03 0.00 < 0.03

cylindrospermopsin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-07-16 0.09 0.00 < 0.09
2018 2018-07-02 0.09 0.00 < 0.09
2018 2018-06-18 0.09 0.00 < 0.09
2018 2018-06-04 0.09 0.00 < 0.09
2018 2018-05-21 0.09 0.00 < 0.09
2018 2018-05-07 0.09 0.00 < 0.09
2018 2018-04-16 0.09 0.00 < 0.09
2018 2018-04-02 0.09 0.00 < 0.09

total microcystin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-07-16 0.3 0.00 < 0.3
2018 2018-07-02 0.3 0.00 < 0.3
2018 2018-06-18 0.3 0.00 < 0.3
2018 2018-06-04 0.3 0.00 < 0.3
2018 2018-05-21 0.3 0.00 < 0.3
2018 2018-05-07 0.3 0.00 < 0.3
2018 2018-04-16 0.3 0.00 < 0.3
2018 2018-04-02 0.3 0.00 < 0.3

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Other Water Contaminants Tested

The following contaminants were tested and found to be within national EPA guidelines.

Contaminant MRLMinimum Reporting Level HRLHealth Risk Limit Avg Result
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.03 6.14 < 0.03
2014 2014-11-19 0.03 6.14 < 0.03
2014 2014-08-11 0.03 6.14 < 0.03
2014 2014-05-12 0.03 6.14 < 0.03
[+] Expand Test Data
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.03 0.0004 < 0.03
2014 2014-11-19 0.03 0.0004 < 0.03
2014 2014-08-11 0.03 0.0004 < 0.03
2014 2014-05-12 0.03 0.0004 < 0.03
[+] Expand Test Data
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.1 0.0103 < 0.1
2014 2014-11-19 0.1 0.0103 < 0.1
2014 2014-08-11 0.1 0.0103 < 0.1
2014 2014-05-12 0.1 0.0103 < 0.1
[+] Expand Test Data
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.07 0.35 < 0.07
2014 2014-11-19 0.07 0.35 < 0.07
2014 2014-08-11 0.07 0.35 < 0.07
2014 2014-05-12 0.07 0.35 < 0.07
[+] Expand Test Data
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.2 140 < 0.2
2014 2014-11-19 0.2 140 < 0.2
2014 2014-08-11 0.2 140 < 0.2
2014 2014-05-12 0.2 140 < 0.2
[+] Expand Test Data
chlorate 20 210 42.875 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 20 210 37
2015 2015-02-09 20 210 40
2014 2014-11-19 20 210 64
2014 2014-11-19 20 210 41
2014 2014-08-11 20 210 42
2014 2014-08-11 20 210 45
2014 2014-05-12 20 210 39
2014 2014-05-12 20 210 35
[+] Expand Test Data
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.2 2.69 < 0.2
2014 2014-11-19 0.2 2.69 < 0.2
2014 2014-08-11 0.2 2.69 < 0.2
2014 2014-05-12 0.2 2.69 < 0.2
[+] Expand Test Data
chromium 0.2 100 0.5588 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.2 100 0.45
2015 2015-02-09 0.2 100 0.5
2014 2014-12-01 0.2 100 0.62
2014 2014-11-19 0.2 100 1.1
2014 2014-08-11 0.2 100 0.49
2014 2014-08-11 0.2 100 0.51
2014 2014-05-12 0.2 100 0.41
2014 2014-05-12 0.2 100 0.39
[+] Expand Test Data
chromium-6 0.03 0 0.3013 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.03 0 0.25
2015 2015-02-09 0.03 0 0.26
2014 2014-11-19 0.03 0 0.3
2014 2014-11-19 0.03 0 0.31
2014 2014-08-11 0.03 0 0.29
2014 2014-08-11 0.03 0 0.31
2014 2014-05-12 0.03 0 0.34
2014 2014-05-12 0.03 0 0.35
[+] Expand Test Data
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 1 70 < 1
2015 2015-02-09 1 70 < 1
2014 2014-12-01 1 70 < 1
2014 2014-11-19 1 70 < 1
2014 2014-08-11 1 70 < 1
2014 2014-08-11 1 70 < 1
2014 2014-05-12 1 70 < 1
2014 2014-05-12 1 70 < 1
[+] Expand Test Data
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.06 90 < 0.06
2014 2014-11-19 0.06 90 < 0.06
2014 2014-08-11 0.06 90 < 0.06
2014 2014-05-12 0.06 90 < 0.06
[+] Expand Test Data
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.08 0 < 0.08
2014 2014-11-19 0.08 0 < 0.08
2014 2014-08-11 0.08 0 < 0.08
2014 2014-05-12 0.08 0 < 0.08
[+] Expand Test Data
molybdenum 1 40 4.4625 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 1 40 4.5
2015 2015-02-09 1 40 4.6
2014 2014-12-01 1 40 5
2014 2014-11-19 1 40 5.5
2014 2014-08-11 1 40 5.2
2014 2014-08-11 1 40 4.8
2014 2014-05-12 1 40 3.1
2014 2014-05-12 1 40 3
[+] Expand Test Data
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.09 0 < 0.09
2014 2014-11-19 0.09 0 < 0.09
2014 2014-08-11 0.09 0 < 0.09
2014 2014-05-12 0.09 0 < 0.09
[+] Expand Test Data
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.01 0 < 0.01
2014 2014-11-19 0.01 0 < 0.01
2014 2014-08-11 0.01 0 < 0.01
2014 2014-05-12 0.01 0 < 0.01
[+] Expand Test Data
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.03 0 < 0.03
2014 2014-11-19 0.03 0 < 0.03
2014 2014-08-11 0.03 0 < 0.03
2014 2014-05-12 0.03 0 < 0.03
[+] Expand Test Data
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.02 0 < 0.02
2014 2014-11-19 0.02 0 < 0.02
2014 2014-08-11 0.02 0 < 0.02
2014 2014-05-12 0.02 0 < 0.02
[+] Expand Test Data
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.02 0.07 < 0.02
2014 2014-11-19 0.02 0.07 < 0.02
2014 2014-08-11 0.02 0.07 < 0.02
2014 2014-05-12 0.02 0.07 < 0.02
[+] Expand Test Data
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.04 0.07 < 0.04
2014 2014-11-19 0.04 0.07 < 0.04
2014 2014-08-11 0.04 0.07 < 0.04
2014 2014-05-12 0.04 0.07 < 0.04
[+] Expand Test Data
strontium 0.3 1500 491.25 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.3 1500 490
2015 2015-02-09 0.3 1500 500
2014 2014-12-01 0.3 1500 610
2014 2014-11-19 0.3 1500 620
2014 2014-08-11 0.3 1500 470
2014 2014-08-11 0.3 1500 440
2014 2014-05-12 0.3 1500 400
2014 2014-05-12 0.3 1500 400
[+] Expand Test Data
vanadium 0.2 21 3.875 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-02-09 0.2 21 3.4
2015 2015-02-09 0.2 21 3.6
2014 2014-12-01 0.2 21 4.7
2014 2014-11-19 0.2 21 4.6
2014 2014-08-11 0.2 21 3.6
2014 2014-08-11 0.2 21 3.6
2014 2014-05-12 0.2 21 4
2014 2014-05-12 0.2 21 3.5
[+] Expand Test Data

Lead and Copper Data

Lead and copper are recorded separately from other contaminants because of the Lead and Copper Rule. As with all other results, these are the findings at the water supply level. Lead and copper can be — and often are — deposited in drinking water in between the water facility and your tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
CA62734 lead 2016-01-01 2018-12-31 0.0074mg/L
CA48994 lead 2013-01-01 2015-12-31 0mg/L
CA37542 lead 2011-01-01 2013-12-31 0mg/L
561001610211L lead 2010-01-01 2010-12-31 0.009mg/L
561001608211L lead 2008-01-01 2008-12-31 0.005mg/L
561001608232L lead 2008-01-01 2008-12-31 0.007mg/L

Violations

Known violations of the Safe Drinking Water Act as recorded by the EPA.

No violations found for California Water Service Co - Westlake.


Local Water Testing

Find a lab in your area so you can get your tap or well water tested. This list contains both governmental and private labs, all of which are EPA-certified for drinking water testing.

Lab Location Zip Code
Torrent Laboratory, Inc. Milpitas, CA 95035
Datalab San Jose, CA 95131
Santa Clara County Public Health Lab San Jose, CA 95128

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about California Water Service Co - Westlake (CA5610016).

What My Water Data Means

Water data isn't always easy to interpret, but by following the links on this page you should be able to have most of your questions answered. By clicking the name of a water contaminant or secondary substance you can learn about that specific substance. Ultimately this page should give you some insight towards learning if your water is safe, what water filter you should buy (if any), and how well your local water compares against other sources.

Sources

The origin of MyTapWater.org's water data is explained on our Data Sources page.

Why Is My Water Data Not More Recent?

The recency of the data for your ZIP code depends on the last your water source was tested, by a federal, state, or local agency. More information about the timing can be determined by learning about the dataset in question and seeing how often the EPA (other another governing body) mandated testing.