Public Water System: California Water Service-s San Francisco

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: CA4110009
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 61,769
Contact Information
JAMES, SOPHIE
JAMES, SOPHIE
1720 NORTH FIRST STREET
SAN JOSE, CA 95112-4508

This public water system services 6 zip codes in 1 county.

Summary Results


A summary view of the the times a water contaminant was tested and found to exceed the level set by the EPA (the MCL).

Maximum Contaminant Levels Exceeded (by year):

2013   (1) 2014   (0) 2015   (0)
chlorate

Contaminant Detailed Results


This a view of violations of maximum contaminant levels. In the expanded view you can see each know test date for a given contaminant, the result of the test, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).

chlorate
Is this in your home's pipes?

Year Test Date MRL HRL Test Result
2014 2014-03-10 20 210 160
2014 2014-03-10 20 210 180
2014 2014-03-10 20 210 150
2014 2014-03-10 20 210 74
2013 2013-12-04 20 210 200
2013 2013-12-04 20 210 170
2013 2013-12-04 20 210 200
2013 2013-12-04 20 210 110
2013 2013-09-10 20 210 220
2013 2013-09-10 20 210 150
2013 2013-09-10 20 210 220
2013 2013-09-10 20 210 140
2013 2013-06-05 20 210 48
2013 2013-06-05 20 210 47
2013 2013-06-05 20 210 47
2013 2013-06-05 20 210 51

Other Water Contaminants Tested


The following contaminants were tested and within national EPA guidelines.

The last mile of pipe makes a big difference, learn more about testing your water.

Contaminant MRL HRL Avg Result
chromium 0.2 100 0.6494 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.2 100 1.5
2014 2014-03-10 0.2 100 1.4
2014 2014-03-10 0.2 100 1.7
2014 2014-03-10 0.2 100 < 0.2
2013 2013-12-04 0.2 100 1.6
2013 2013-12-04 0.2 100 0.97
2013 2013-12-04 0.2 100 1.7
2013 2013-12-04 0.2 100 < 0.2
2013 2013-09-10 0.2 100 0.54
2013 2013-09-10 0.2 100 < 0.2
2013 2013-09-10 0.2 100 0.72
2013 2013-09-10 0.2 100 0.26
2013 2013-06-05 0.2 100 < 0.2
2013 2013-06-05 0.2 100 < 0.2
2013 2013-06-05 0.2 100 < 0.2
2013 2013-06-05 0.2 100 < 0.2
estrone 0.002 0.35 < 0.002 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.002 0.35 < 0.002
2014 2014-03-10 0.002 0.35 < 0.002
2013 2013-12-04 0.002 0.35 < 0.002
2013 2013-12-04 0.002 0.35 < 0.002
2013 2013-09-10 0.002 0.35 < 0.002
2013 2013-09-10 0.002 0.35 < 0.002
2013 2013-06-05 0.002 0.35 < 0.002
2013 2013-06-05 0.002 0.35 < 0.002
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.06 90 < 0.06
2014 2014-03-10 0.06 90 < 0.06
2013 2013-12-04 0.06 90 < 0.06
2013 2013-12-04 0.06 90 < 0.06
2013 2013-09-10 0.06 90 < 0.06
2013 2013-09-10 0.06 90 < 0.06
2013 2013-06-05 0.06 90 < 0.06
2013 2013-06-05 0.06 90 < 0.06
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.04 0.07 < 0.04
2014 2014-03-10 0.04 0.07 < 0.04
2013 2013-12-04 0.04 0.07 < 0.04
2013 2013-12-04 0.04 0.07 < 0.04
2013 2013-09-10 0.04 0.07 < 0.04
2013 2013-09-10 0.04 0.07 < 0.04
2013 2013-06-05 0.04 0.07 < 0.04
2013 2013-06-05 0.04 0.07 < 0.04
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.09 0 < 0.09
2014 2014-03-10 0.09 0 < 0.09
2013 2013-12-04 0.09 0 < 0.09
2013 2013-12-04 0.09 0 < 0.09
2013 2013-09-10 0.09 0 < 0.09
2013 2013-09-10 0.09 0 < 0.09
2013 2013-06-05 0.09 0 < 0.09
2013 2013-06-05 0.09 0 < 0.09
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.07 0.35 < 0.07
2014 2014-03-10 0.07 0.35 < 0.07
2013 2013-12-04 0.07 0.35 < 0.07
2013 2013-12-04 0.07 0.35 < 0.07
2013 2013-09-10 0.07 0.35 < 0.07
2013 2013-09-10 0.07 0.35 < 0.07
2013 2013-06-05 0.07 0.35 < 0.07
2013 2013-06-05 0.07 0.35 < 0.07
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.03 0.0004 < 0.03
2014 2014-03-10 0.03 0.0004 < 0.03
2013 2013-12-04 0.03 0.0004 < 0.03
2013 2013-12-04 0.03 0.0004 < 0.03
2013 2013-09-10 0.03 0.0004 < 0.03
2013 2013-09-10 0.03 0.0004 < 0.03
2013 2013-06-05 0.03 0.0004 < 0.03
2013 2013-06-05 0.03 0.0004 < 0.03
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.2 140 < 0.2
2014 2014-03-10 0.2 140 < 0.2
2013 2013-12-04 0.2 140 < 0.2
2013 2013-12-04 0.2 140 < 0.2
2013 2013-09-10 0.2 140 < 0.2
2013 2013-09-10 0.2 140 < 0.2
2013 2013-06-05 0.2 140 < 0.2
2013 2013-06-05 0.2 140 < 0.2
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.1 0.0103 < 0.1
2014 2014-03-10 0.1 0.0103 < 0.1
2013 2013-12-04 0.1 0.0103 < 0.1
2013 2013-12-04 0.1 0.0103 < 0.1
2013 2013-09-10 0.1 0.0103 < 0.1
2013 2013-09-10 0.1 0.0103 < 0.1
2013 2013-06-05 0.1 0.0103 < 0.1
2013 2013-06-05 0.1 0.0103 < 0.1
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.08 0 < 0.08
2014 2014-03-10 0.08 0 < 0.08
2013 2013-12-04 0.08 0 < 0.08
2013 2013-12-04 0.08 0 < 0.08
2013 2013-09-10 0.08 0 < 0.08
2013 2013-09-10 0.08 0 < 0.08
2013 2013-06-05 0.08 0 < 0.08
2013 2013-06-05 0.08 0 < 0.08
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.01 0 < 0.01
2014 2014-03-10 0.01 0 < 0.01
2013 2013-12-04 0.01 0 < 0.01
2013 2013-12-04 0.01 0 < 0.01
2013 2013-09-10 0.01 0 < 0.01
2013 2013-09-10 0.01 0 < 0.01
2013 2013-06-05 0.01 0 < 0.01
2013 2013-06-05 0.01 0 < 0.01
strontium 0.3 1500 154.1875 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.3 1500 310
2014 2014-03-10 0.3 1500 300
2014 2014-03-10 0.3 1500 360
2014 2014-03-10 0.3 1500 15
2013 2013-12-04 0.3 1500 400
2013 2013-12-04 0.3 1500 260
2013 2013-12-04 0.3 1500 440
2013 2013-12-04 0.3 1500 53
2013 2013-09-10 0.3 1500 16
2013 2013-09-10 0.3 1500 93
2013 2013-09-10 0.3 1500 130
2013 2013-09-10 0.3 1500 17
2013 2013-06-05 0.3 1500 18
2013 2013-06-05 0.3 1500 17
2013 2013-06-05 0.3 1500 20
2013 2013-06-05 0.3 1500 18
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.2 2.69 < 0.2
2014 2014-03-10 0.2 2.69 < 0.2
2013 2013-12-04 0.2 2.69 < 0.2
2013 2013-12-04 0.2 2.69 < 0.2
2013 2013-09-10 0.2 2.69 < 0.2
2013 2013-09-10 0.2 2.69 < 0.2
2013 2013-06-05 0.2 2.69 < 0.2
2013 2013-06-05 0.2 2.69 < 0.2
vanadium 0.2 21 0.5319 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.2 21 0.97
2014 2014-03-10 0.2 21 0.91
2014 2014-03-10 0.2 21 1.1
2014 2014-03-10 0.2 21 < 0.2
2013 2013-12-04 0.2 21 1.3
2013 2013-12-04 0.2 21 0.92
2013 2013-12-04 0.2 21 1.3
2013 2013-12-04 0.2 21 0.3
2013 2013-09-10 0.2 21 0.46
2013 2013-09-10 0.2 21 0.22
2013 2013-09-10 0.2 21 0.59
2013 2013-09-10 0.2 21 0.44
2013 2013-06-05 0.2 21 < 0.2
2013 2013-06-05 0.2 21 < 0.2
2013 2013-06-05 0.2 21 < 0.2
2013 2013-06-05 0.2 21 < 0.2
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 1 40 < 1
2014 2014-03-10 1 40 < 1
2014 2014-03-10 1 40 < 1
2014 2014-03-10 1 40 < 1
2013 2013-12-04 1 40 < 1
2013 2013-12-04 1 40 < 1
2013 2013-12-04 1 40 < 1
2013 2013-12-04 1 40 < 1
2013 2013-09-10 1 40 < 1
2013 2013-09-10 1 40 < 1
2013 2013-09-10 1 40 < 1
2013 2013-09-10 1 40 < 1
2013 2013-06-05 1 40 < 1
2013 2013-06-05 1 40 < 1
2013 2013-06-05 1 40 < 1
2013 2013-06-05 1 40 < 1
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.02 0 < 0.02
2014 2014-03-10 0.02 0 < 0.02
2013 2013-12-04 0.02 0 < 0.02
2013 2013-12-04 0.02 0 < 0.02
2013 2013-09-10 0.02 0 < 0.02
2013 2013-09-10 0.02 0 < 0.02
2013 2013-06-05 0.02 0 < 0.02
2013 2013-06-05 0.02 0 < 0.02
chromium-6 0.03 0 0.5434 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.03 0 1.2
2014 2014-03-10 0.03 0 1.4
2014 2014-03-10 0.03 0 1.2
2014 2014-03-10 0.03 0 < 0.03
2013 2013-12-04 0.03 0 1.5
2013 2013-12-04 0.03 0 0.91
2013 2013-12-04 0.03 0 1.5
2013 2013-12-04 0.03 0 0.049
2013 2013-09-10 0.03 0 0.35
2013 2013-09-10 0.03 0 < 0.03
2013 2013-09-10 0.03 0 0.55
2013 2013-09-10 0.03 0 0.035
2013 2013-06-05 0.03 0 < 0.03
2013 2013-06-05 0.03 0 < 0.03
2013 2013-06-05 0.03 0 < 0.03
2013 2013-06-05 0.03 0 < 0.03
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 1 70 < 1
2014 2014-03-10 1 70 < 1
2014 2014-03-10 1 70 < 1
2014 2014-03-10 1 70 < 1
2013 2013-12-04 1 70 < 1
2013 2013-12-04 1 70 < 1
2013 2013-12-04 1 70 < 1
2013 2013-12-04 1 70 < 1
2013 2013-09-10 1 70 < 1
2013 2013-09-10 1 70 < 1
2013 2013-09-10 1 70 < 1
2013 2013-09-10 1 70 < 1
2013 2013-06-05 1 70 < 1
2013 2013-06-05 1 70 < 1
2013 2013-06-05 1 70 < 1
2013 2013-06-05 1 70 < 1
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.03 0 < 0.03
2014 2014-03-10 0.03 0 < 0.03
2013 2013-12-04 0.03 0 < 0.03
2013 2013-12-04 0.03 0 < 0.03
2013 2013-09-10 0.03 0 < 0.03
2013 2013-09-10 0.03 0 < 0.03
2013 2013-06-05 0.03 0 < 0.03
2013 2013-06-05 0.03 0 < 0.03
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.02 0.07 < 0.02
2014 2014-03-10 0.02 0.07 < 0.02
2013 2013-12-04 0.02 0.07 < 0.02
2013 2013-12-04 0.02 0.07 < 0.02
2013 2013-09-10 0.02 0.07 < 0.02
2013 2013-09-10 0.02 0.07 < 0.02
2013 2013-06-05 0.02 0.07 < 0.02
2013 2013-06-05 0.02 0.07 < 0.02
17-alpha-ethynylestradiol 0.0009 0.035 < 0.0009 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.0009 0.035 < 0.0009
2014 2014-03-10 0.0009 0.035 < 0.0009
2013 2013-12-04 0.0009 0.035 < 0.0009
2013 2013-12-04 0.0009 0.035 < 0.0009
2013 2013-09-10 0.0009 0.035 < 0.0009
2013 2013-09-10 0.0009 0.035 < 0.0009
2013 2013-06-05 0.0009 0.035 < 0.0009
2013 2013-06-05 0.0009 0.035 < 0.0009
estriol 0.0008 0.35 < 0.0008 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.0008 0.35 < 0.0008
2014 2014-03-10 0.0008 0.35 < 0.0008
2013 2013-12-04 0.0008 0.35 < 0.0008
2013 2013-12-04 0.0008 0.35 < 0.0008
2013 2013-09-10 0.0008 0.35 < 0.0008
2013 2013-09-10 0.0008 0.35 < 0.0008
2013 2013-06-05 0.0008 0.35 < 0.0008
2013 2013-06-05 0.0008 0.35 < 0.0008
4-androstene-3,17-dione 0.0003 0 < 0.0003 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.0003 0 < 0.0003
2014 2014-03-10 0.0003 0 < 0.0003
2013 2013-12-04 0.0003 0 < 0.0003
2013 2013-12-04 0.0003 0 < 0.0003
2013 2013-09-10 0.0003 0 < 0.0003
2013 2013-09-10 0.0003 0 < 0.0003
2013 2013-06-05 0.0003 0 < 0.0003
2013 2013-06-05 0.0003 0 < 0.0003
testosterone 0.0001 0 < 0.0001 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.0001 0 < 0.0001
2014 2014-03-10 0.0001 0 < 0.0001
2013 2013-12-04 0.0001 0 < 0.0001
2013 2013-12-04 0.0001 0 < 0.0001
2013 2013-09-10 0.0001 0 < 0.0001
2013 2013-09-10 0.0001 0 < 0.0001
2013 2013-06-05 0.0001 0 < 0.0001
2013 2013-06-05 0.0001 0 < 0.0001
equilin 0.004 0.35 < 0.004 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.004 0.35 < 0.004
2014 2014-03-10 0.004 0.35 < 0.004
2013 2013-12-04 0.004 0.35 < 0.004
2013 2013-12-04 0.004 0.35 < 0.004
2013 2013-09-10 0.004 0.35 < 0.004
2013 2013-09-10 0.004 0.35 < 0.004
2013 2013-06-05 0.004 0.35 < 0.004
2013 2013-06-05 0.004 0.35 < 0.004
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.03 6.14 < 0.03
2014 2014-03-10 0.03 6.14 < 0.03
2013 2013-12-04 0.03 6.14 < 0.03
2013 2013-12-04 0.03 6.14 < 0.03
2013 2013-09-10 0.03 6.14 < 0.03
2013 2013-09-10 0.03 6.14 < 0.03
2013 2013-06-05 0.03 6.14 < 0.03
2013 2013-06-05 0.03 6.14 < 0.03
17-beta-estradiol 0.0004 0.0009 < 0.0004 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-03-10 0.0004 0.0009 < 0.0004
2014 2014-03-10 0.0004 0.0009 < 0.0004
2013 2013-12-04 0.0004 0.0009 < 0.0004
2013 2013-12-04 0.0004 0.0009 < 0.0004
2013 2013-09-10 0.0004 0.0009 < 0.0004
2013 2013-09-10 0.0004 0.0009 < 0.0004
2013 2013-06-05 0.0004 0.0009 < 0.0004
2013 2013-06-05 0.0004 0.0009 < 0.0004

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. Lead and copper can be — and often are — added to drinking water in between the water facility and a tap.

Sample ID Contaminant Sampling Start Date Sampling End Date Result
CA53860 lead 2016-01-01 2018-12-31 0mg/L
CA38904 lead 2013-01-01 2015-12-31 0mg/L
411000910030LT1 lead 2010-01-01 2010-12-31 0.005mg/L
411000909202LA1 lead 2009-01-01 2009-12-31 0.011mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
1993-06-01 - 1993-06-30 Surface Water Treatment Rule Treatment Technique (SWTR and GWR) Surface Water Treatment Rule Returned to Compliance
1992-10-01 - 1992-10-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
2013-06-01 - N/A Ground Water Rule Monitoring, Source Water (GWR) E. COLI Returned to Compliance

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.