Public Water System: Gswc-south San Gabriel

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: CA1910223
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 17,046
Contact Information
CHAKMAK, ALEX
CHAKMAK, ALEX
401 S. San Dimas Canyon Rd.
SAN DIMAS, CA 91773

This public water system services 1 zip code in 1 municipality 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   (0) 2014   (1) 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 2014-09-30 20 210 1000
2014 2014-09-24 20 210 100
2014 2014-09-24 20 210 140
2014 2014-06-30 20 210 98
2014 2014-06-30 20 210 95
2014 2014-06-24 20 210 65
2014 2014-06-24 20 210 110
2014 2014-06-24 20 210 170
2014 2014-06-24 20 210 150
2014 2014-03-18 20 210 60
2014 2014-03-18 20 210 63
2013 2013-12-18 20 210 61
2013 2013-12-18 20 210 94
2013 2013-12-18 20 210 58
2013 2013-12-18 20 210 64
2013 2013-12-18 20 210 80
2013 2013-12-18 20 210 94
2013 2013-12-18 20 210 43

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
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-08 0.08 0 < 0.08
2014 2014-09-30 0.08 0 < 0.08
2014 2014-06-30 0.08 0 < 0.08
2014 2014-06-24 0.08 0 < 0.08
2014 2014-06-24 0.08 0 < 0.08
2014 2014-03-18 0.08 0 < 0.08
2013 2013-12-18 0.08 0 < 0.08
2013 2013-12-18 0.08 0 < 0.08
2013 2013-12-18 0.08 0 < 0.08
2013 2013-12-18 0.08 0 < 0.08
1,4-dioxane 0.07 0.35 0.042 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.07 0.35 < 0.07
2014 2014-09-24 0.07 0.35 < 0.07
2014 2014-06-30 0.07 0.35 0.2
2014 2014-06-24 0.07 0.35 < 0.07
2014 2014-06-24 0.07 0.35 < 0.07
2014 2014-03-18 0.07 0.35 < 0.07
2013 2013-12-18 0.07 0.35 < 0.07
2013 2013-12-18 0.07 0.35 < 0.07
2013 2013-12-18 0.07 0.35 < 0.07
2013 2013-12-18 0.07 0.35 0.22
vanadium 0.2 21 5.7778 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.2 21 6.3
2014 2014-09-24 0.2 21 6.3
2014 2014-09-24 0.2 21 2.8
2014 2014-06-30 0.2 21 6.6
2014 2014-06-30 0.2 21 6.8
2014 2014-06-24 0.2 21 2.8
2014 2014-06-24 0.2 21 6.1
2014 2014-06-24 0.2 21 11
2014 2014-06-24 0.2 21 12
2014 2014-03-18 0.2 21 1.7
2014 2014-03-18 0.2 21 4.1
2013 2013-12-18 0.2 21 2.2
2013 2013-12-18 0.2 21 4.2
2013 2013-12-18 0.2 21 7.3
2013 2013-12-18 0.2 21 4.3
2013 2013-12-18 0.2 21 9.8
2013 2013-12-18 0.2 21 5.2
2013 2013-12-18 0.2 21 4.5
molybdenum 1 40 7.4444 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 1 40 9
2014 2014-09-24 1 40 4.3
2014 2014-09-24 1 40 7.9
2014 2014-06-30 1 40 8.4
2014 2014-06-30 1 40 8.4
2014 2014-06-24 1 40 4.6
2014 2014-06-24 1 40 7.5
2014 2014-06-24 1 40 10
2014 2014-06-24 1 40 11
2014 2014-03-18 1 40 3.6
2014 2014-03-18 1 40 5.7
2013 2013-12-18 1 40 4.5
2013 2013-12-18 1 40 6.8
2013 2013-12-18 1 40 9.2
2013 2013-12-18 1 40 7.2
2013 2013-12-18 1 40 10
2013 2013-12-18 1 40 8.7
2013 2013-12-18 1 40 7.2
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 1 70 < 1
2014 2014-09-24 1 70 < 1
2014 2014-09-24 1 70 < 1
2014 2014-06-30 1 70 < 1
2014 2014-06-30 1 70 < 1
2014 2014-06-24 1 70 < 1
2014 2014-06-24 1 70 < 1
2014 2014-06-24 1 70 < 1
2014 2014-06-24 1 70 < 1
2014 2014-03-18 1 70 < 1
2014 2014-03-18 1 70 < 1
2013 2013-12-18 1 70 < 1
2013 2013-12-18 1 70 < 1
2013 2013-12-18 1 70 < 1
2013 2013-12-18 1 70 < 1
2013 2013-12-18 1 70 < 1
2013 2013-12-18 1 70 < 1
2013 2013-12-18 1 70 < 1
chromium-6 0.03 0 3.8852 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.03 0 4.6
2014 2014-09-24 0.03 0 6.4
2014 2014-09-24 0.03 0 < 0.03
2014 2014-06-30 0.03 0 5.9
2014 2014-06-30 0.03 0 5.9
2014 2014-06-24 0.03 0 0.033
2014 2014-06-24 0.03 0 4.4
2014 2014-06-24 0.03 0 5.3
2014 2014-06-24 0.03 0 4.4
2014 2014-03-18 0.03 0 < 0.03
2014 2014-03-18 0.03 0 4.5
2013 2013-12-18 0.03 0 4.6
2013 2013-12-18 0.03 0 4.9
2013 2013-12-18 0.03 0 4.5
2013 2013-12-18 0.03 0 4.6
2013 2013-12-18 0.03 0 5.2
2013 2013-12-18 0.03 0 < 0.03
2013 2013-12-18 0.03 0 4.7
chromium 0.2 100 3.5778 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.2 100 5
2014 2014-09-24 0.2 100 < 0.2
2014 2014-09-24 0.2 100 6.2
2014 2014-06-30 0.2 100 5.6
2014 2014-06-30 0.2 100 6
2014 2014-06-24 0.2 100 < 0.2
2014 2014-06-24 0.2 100 5.1
2014 2014-06-24 0.2 100 4.3
2014 2014-06-24 0.2 100 4.5
2014 2014-03-18 0.2 100 < 0.2
2014 2014-03-18 0.2 100 3.6
2013 2013-12-18 0.2 100 3.7
2013 2013-12-18 0.2 100 4.3
2013 2013-12-18 0.2 100 3.9
2013 2013-12-18 0.2 100 3.9
2013 2013-12-18 0.2 100 4.2
2013 2013-12-18 0.2 100 < 0.2
2013 2013-12-18 0.2 100 4.1
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-08 0.2 140 < 0.2
2014 2014-09-30 0.2 140 < 0.2
2014 2014-06-30 0.2 140 < 0.2
2014 2014-06-24 0.2 140 < 0.2
2014 2014-06-24 0.2 140 < 0.2
2014 2014-03-18 0.2 140 < 0.2
2013 2013-12-18 0.2 140 < 0.2
2013 2013-12-18 0.2 140 < 0.2
2013 2013-12-18 0.2 140 < 0.2
2013 2013-12-18 0.2 140 < 0.2
1,1-dichloroethane 0.03 6.14 0.032 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-08 0.03 6.14 0.17
2014 2014-09-30 0.03 6.14 < 0.03
2014 2014-06-30 0.03 6.14 0.061
2014 2014-06-24 0.03 6.14 < 0.03
2014 2014-06-24 0.03 6.14 < 0.03
2014 2014-03-18 0.03 6.14 0.035
2013 2013-12-18 0.03 6.14 < 0.03
2013 2013-12-18 0.03 6.14 < 0.03
2013 2013-12-18 0.03 6.14 < 0.03
2013 2013-12-18 0.03 6.14 0.054
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-08 0.2 2.69 < 0.2
2014 2014-09-30 0.2 2.69 < 0.2
2014 2014-06-30 0.2 2.69 < 0.2
2014 2014-06-24 0.2 2.69 < 0.2
2014 2014-06-24 0.2 2.69 < 0.2
2014 2014-03-18 0.2 2.69 < 0.2
2013 2013-12-18 0.2 2.69 < 0.2
2013 2013-12-18 0.2 2.69 < 0.2
2013 2013-12-18 0.2 2.69 < 0.2
2013 2013-12-18 0.2 2.69 < 0.2
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.03 0 < 0.03
2014 2014-09-24 0.03 0 < 0.03
2014 2014-06-30 0.03 0 < 0.03
2014 2014-06-24 0.03 0 < 0.03
2014 2014-06-24 0.03 0 < 0.03
2014 2014-03-18 0.03 0 < 0.03
2013 2013-12-18 0.03 0 < 0.03
2013 2013-12-18 0.03 0 < 0.03
2013 2013-12-18 0.03 0 < 0.03
2013 2013-12-18 0.03 0 < 0.03
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-08 0.03 0.0004 < 0.03
2014 2014-09-30 0.03 0.0004 < 0.03
2014 2014-06-30 0.03 0.0004 < 0.03
2014 2014-06-24 0.03 0.0004 < 0.03
2014 2014-06-24 0.03 0.0004 < 0.03
2014 2014-03-18 0.03 0.0004 < 0.03
2013 2013-12-18 0.03 0.0004 < 0.03
2013 2013-12-18 0.03 0.0004 < 0.03
2013 2013-12-18 0.03 0.0004 < 0.03
2013 2013-12-18 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
2014 2014-10-08 0.1 0.0103 < 0.1
2014 2014-09-30 0.1 0.0103 < 0.1
2014 2014-06-30 0.1 0.0103 < 0.1
2014 2014-06-24 0.1 0.0103 < 0.1
2014 2014-06-24 0.1 0.0103 < 0.1
2014 2014-03-18 0.1 0.0103 < 0.1
2013 2013-12-18 0.1 0.0103 < 0.1
2013 2013-12-18 0.1 0.0103 < 0.1
2013 2013-12-18 0.1 0.0103 < 0.1
2013 2013-12-18 0.1 0.0103 < 0.1
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.04 0.07 < 0.04
2014 2014-09-24 0.04 0.07 < 0.04
2014 2014-06-30 0.04 0.07 < 0.04
2014 2014-06-24 0.04 0.07 < 0.04
2014 2014-06-24 0.04 0.07 < 0.04
2014 2014-03-18 0.04 0.07 < 0.04
2013 2013-12-18 0.04 0.07 < 0.04
2013 2013-12-18 0.04 0.07 < 0.04
2013 2013-12-18 0.04 0.07 < 0.04
2013 2013-12-18 0.04 0.07 < 0.04
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.02 0.07 < 0.02
2014 2014-09-24 0.02 0.07 < 0.02
2014 2014-06-30 0.02 0.07 < 0.02
2014 2014-06-24 0.02 0.07 < 0.02
2014 2014-06-24 0.02 0.07 < 0.02
2014 2014-03-18 0.02 0.07 < 0.02
2013 2013-12-18 0.02 0.07 < 0.02
2013 2013-12-18 0.02 0.07 < 0.02
2013 2013-12-18 0.02 0.07 < 0.02
2013 2013-12-18 0.02 0.07 < 0.02
Halon 1011 0.06 90 0.072 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-10-08 0.06 90 0.38
2014 2014-09-30 0.06 90 < 0.06
2014 2014-06-30 0.06 90 < 0.06
2014 2014-06-24 0.06 90 0.34
2014 2014-06-24 0.06 90 < 0.06
2014 2014-03-18 0.06 90 < 0.06
2013 2013-12-18 0.06 90 < 0.06
2013 2013-12-18 0.06 90 < 0.06
2013 2013-12-18 0.06 90 < 0.06
2013 2013-12-18 0.06 90 < 0.06
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.09 0 < 0.09
2014 2014-09-24 0.09 0 < 0.09
2014 2014-06-30 0.09 0 < 0.09
2014 2014-06-24 0.09 0 < 0.09
2014 2014-06-24 0.09 0 < 0.09
2014 2014-03-18 0.09 0 < 0.09
2013 2013-12-18 0.09 0 < 0.09
2013 2013-12-18 0.09 0 < 0.09
2013 2013-12-18 0.09 0 < 0.09
2013 2013-12-18 0.09 0 < 0.09
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.02 0 < 0.02
2014 2014-09-24 0.02 0 < 0.02
2014 2014-06-30 0.02 0 < 0.02
2014 2014-06-24 0.02 0 < 0.02
2014 2014-06-24 0.02 0 < 0.02
2014 2014-03-18 0.02 0 < 0.02
2013 2013-12-18 0.02 0 < 0.02
2013 2013-12-18 0.02 0 < 0.02
2013 2013-12-18 0.02 0 < 0.02
2013 2013-12-18 0.02 0 < 0.02
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.01 0 < 0.01
2014 2014-09-24 0.01 0 < 0.01
2014 2014-06-30 0.01 0 < 0.01
2014 2014-06-24 0.01 0 < 0.01
2014 2014-06-24 0.01 0 < 0.01
2014 2014-03-18 0.01 0 < 0.01
2013 2013-12-18 0.01 0 < 0.01
2013 2013-12-18 0.01 0 < 0.01
2013 2013-12-18 0.01 0 < 0.01
2013 2013-12-18 0.01 0 < 0.01
strontium 0.3 1500 436.1111 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-09-30 0.3 1500 240
2014 2014-09-24 0.3 1500 1100
2014 2014-09-24 0.3 1500 320
2014 2014-06-30 0.3 1500 330
2014 2014-06-30 0.3 1500 320
2014 2014-06-24 0.3 1500 1100
2014 2014-06-24 0.3 1500 310
2014 2014-06-24 0.3 1500 210
2014 2014-06-24 0.3 1500 220
2014 2014-03-18 0.3 1500 940
2014 2014-03-18 0.3 1500 310
2013 2013-12-18 0.3 1500 290
2013 2013-12-18 0.3 1500 200
2013 2013-12-18 0.3 1500 300
2013 2013-12-18 0.3 1500 200
2013 2013-12-18 0.3 1500 220
2013 2013-12-18 0.3 1500 950
2013 2013-12-18 0.3 1500 290

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
CA57936 lead 2015-01-01 2017-12-31 0mg/L
CA41726 lead 2012-01-01 2014-12-31 0mg/L
191022311269LT1 lead 2011-01-01 2011-12-31 0.005mg/L
191022309273L lead 2009-01-01 2009-12-31 0.005mg/L
191022308206LT4 lead 2008-01-01 2008-12-31 0.002mg/L
191022308232L lead 2008-01-01 2008-12-31 0.005mg/L
191022308206L lead 2008-01-01 2008-12-31 0.002mg/L

Violations


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

No violations found for Gswc-south San Gabriel.


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.