California Water Service - San Carlos 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: CA4110007
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 29,554
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   (1) 2015   (1) 2016   (0) 2017   (0) 2018   (3)
chlorate chlorate 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).

chlorate

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2015 2015-08-20 20 210 210
2015 2015-08-20 20 210 200
2015 2015-05-05 20 210 170
2015 2015-05-05 20 210 160
2015 2015-02-03 20 210 110
2015 2015-02-03 20 210 110
2014 2014-11-03 20 210 210
2014 2014-11-03 20 210 200

anatoxin-a

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-07-02 0.03 0.00 < 0.03

cylindrospermopsin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-07-02 0.09 0.00 < 0.09

total microcystin

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2018 2018-07-02 0.3 0.00 < 0.3

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 2015-08-20 0.03 6.14 < 0.03
2015 2015-05-05 0.03 6.14 < 0.03
2015 2015-02-03 0.03 6.14 < 0.03
2014 2014-11-03 0.03 6.14 < 0.03
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.03 0.0004 < 0.03
2015 2015-05-05 0.03 0.0004 < 0.03
2015 2015-02-03 0.03 0.0004 < 0.03
2014 2014-11-03 0.03 0.0004 < 0.03
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.1 0.0103 < 0.1
2015 2015-05-05 0.1 0.0103 < 0.1
2015 2015-02-03 0.1 0.0103 < 0.1
2014 2014-11-03 0.1 0.0103 < 0.1
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.07 0.35 < 0.07
2015 2015-05-05 0.07 0.35 < 0.07
2015 2015-02-03 0.07 0.35 < 0.07
2014 2014-11-03 0.07 0.35 < 0.07
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.2 140 < 0.2
2015 2015-05-05 0.2 140 < 0.2
2015 2015-02-03 0.2 140 < 0.2
2014 2014-11-03 0.2 140 < 0.2
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.2 2.69 < 0.2
2015 2015-05-05 0.2 2.69 < 0.2
2015 2015-02-03 0.2 2.69 < 0.2
2014 2014-11-03 0.2 2.69 < 0.2
chromium-6 0.03 0 0.034 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.03 0 0.03
2015 2015-08-20 0.03 0 < 0.03
2015 2015-05-05 0.03 0 < 0.03
2015 2015-05-05 0.03 0 < 0.03
2015 2015-02-03 0.03 0 0.1
2015 2015-02-03 0.03 0 0.11
2014 2014-11-03 0.03 0 0.032
2014 2014-11-03 0.03 0 < 0.03
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.06 90 < 0.06
2015 2015-05-05 0.06 90 < 0.06
2015 2015-02-03 0.06 90 < 0.06
2014 2014-11-03 0.06 90 < 0.06
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.08 0 < 0.08
2015 2015-05-05 0.08 0 < 0.08
2015 2015-02-03 0.08 0 < 0.08
2014 2014-11-03 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.09 0 < 0.09
2015 2015-05-05 0.09 0 < 0.09
2015 2015-02-03 0.09 0 < 0.09
2014 2014-11-03 0.09 0 < 0.09
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.01 0 < 0.01
2015 2015-05-05 0.01 0 < 0.01
2015 2015-02-03 0.01 0 < 0.01
2014 2014-11-03 0.01 0 < 0.01
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.03 0 < 0.03
2015 2015-05-05 0.03 0 < 0.03
2015 2015-02-03 0.03 0 < 0.03
2014 2014-11-03 0.03 0 < 0.03
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.02 0 < 0.02
2015 2015-05-05 0.02 0 < 0.02
2015 2015-02-03 0.02 0 < 0.02
2014 2014-11-03 0.02 0 < 0.02
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.02 0.07 < 0.02
2015 2015-05-05 0.02 0.07 < 0.02
2015 2015-02-03 0.02 0.07 < 0.02
2014 2014-11-03 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.04 0.07 < 0.04
2015 2015-05-05 0.04 0.07 < 0.04
2015 2015-02-03 0.04 0.07 < 0.04
2014 2014-11-03 0.04 0.07 < 0.04
chromium 0.2 100 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.2 100 < 0.2
2015 2015-08-20 0.2 100 < 0.2
2015 2015-06-09 0.2 100 < 0.2
2015 2015-05-05 0.2 100 < 0.2
2015 2015-05-05 0.2 100 < 0.2
2015 2015-02-03 0.2 100 < 0.2
2015 2015-02-03 0.2 100 < 0.2
2014 2014-12-12 0.2 100 < 0.2
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 1 70 < 1
2015 2015-08-20 1 70 < 1
2015 2015-06-09 1 70 < 1
2015 2015-05-05 1 70 < 1
2015 2015-05-05 1 70 < 1
2015 2015-02-03 1 70 < 1
2015 2015-02-03 1 70 < 1
2014 2014-12-12 1 70 < 1
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 1 40 < 1
2015 2015-08-20 1 40 < 1
2015 2015-06-09 1 40 < 1
2015 2015-05-05 1 40 < 1
2015 2015-05-05 1 40 < 1
2015 2015-02-03 1 40 < 1
2015 2015-02-03 1 40 < 1
2014 2014-12-12 1 40 < 1
strontium 0.3 1500 93.75 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.3 1500 17
2015 2015-08-20 0.3 1500 16
2015 2015-06-09 0.3 1500 17
2015 2015-05-05 0.3 1500 15
2015 2015-05-05 0.3 1500 16
2015 2015-02-03 0.3 1500 330
2015 2015-02-03 0.3 1500 320
2014 2014-12-12 0.3 1500 19
vanadium 0.2 21 0.1825 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-08-20 0.2 21 < 0.2
2015 2015-08-20 0.2 21 < 0.2
2015 2015-06-09 0.2 21 < 0.2
2015 2015-05-05 0.2 21 < 0.2
2015 2015-05-05 0.2 21 < 0.2
2015 2015-02-03 0.2 21 0.6
2015 2015-02-03 0.2 21 0.66
2014 2014-12-12 0.2 21 0.2

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
CA62736 lead 2016-01-01 2018-12-31 0mg/L
CA49213 lead 2014-01-01 2016-12-31 0mg/L
CA38875 lead 2013-01-01 2015-12-31 0mg/L
411000710237L1ST 6 lead 2010-01-01 2010-12-31 0.0042mg/L
411000710237LA2 lead 2010-01-01 2010-12-31 0.005mg/L
411000710252L2ND 6 lead 2010-01-01 2010-12-31 0.019mg/L
411000710256LT2 lead 2010-01-01 2010-12-31 0.0025mg/L
411000710272L1ST 6 lead 2010-01-01 2010-12-31 0.024mg/L
411000709272L lead 2009-01-01 2009-12-31 0.007mg/L
411000709272LT3 lead 2009-01-01 2009-12-31 0.007mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2015-03-01 - 2015-03-31 Surface Water Treatment Rule Treatment Technique (SWTR and GWR) Surface Water Treatment Rule Returned to Compliance
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
- N/A Surface Water Treatment Rule Treatment Technique (SWTR and GWR) Surface Water Treatment Rule Returned to Compliance

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 - San Carlos (CA4110007).

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.