Gswc-san Dimas 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: CA1910142
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 55,123 		Contact Information
CHAKMAK, ALEX
CHAKMAK, ALEX
401 S. San Dimas Canyon Rd.
SAN DIMAS, CA 91773
[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   (1) 2016   (0) 2017   (0) 2018   (0)
chlorate

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 2015-10-20 20 210 200
2015 2015-10-20 20 210 34
2015 2015-10-20 20 210 77
2015 2015-10-20 20 210 88
2015 2015-10-20 20 210 64
2015 2015-10-20 20 210 92
2015 2015-10-20 20 210 < 20
2015 2015-07-21 20 210 150
2015 2015-07-21 20 210 50
2015 2015-07-21 20 210 73
2015 2015-07-21 20 210 74
2015 2015-07-21 20 210 72
2015 2015-07-21 20 210 87
2015 2015-07-21 20 210 250
2015 2015-07-21 20 210 63
2015 2015-07-21 20 210 54
2015 2015-07-21 20 210 97
2015 2015-07-21 20 210 45
2015 2015-04-17 20 210 84
2015 2015-04-17 20 210 44
2015 2015-04-17 20 210 49
2015 2015-04-17 20 210 57
2015 2015-04-17 20 210 64
2015 2015-04-17 20 210 51
2015 2015-04-17 20 210 23
2015 2015-01-21 20 210 60
2015 2015-01-21 20 210 30
2015 2015-01-21 20 210 31
2015 2015-01-21 20 210 33
2015 2015-01-21 20 210 44
2015 2015-01-21 20 210 78
2015 2015-01-21 20 210 210
2015 2015-01-21 20 210 61
2015 2015-01-21 20 210 110
2015 2015-01-21 20 210 51
2015 2015-01-21 20 210 < 20

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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
chromium 0.2 100 0.2942 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.2 100 < 0.2
2015 2015-10-20 0.2 100 0.31
2015 2015-10-20 0.2 100 < 0.2
2015 2015-10-20 0.2 100 < 0.2
2015 2015-10-20 0.2 100 0.2
2015 2015-10-20 0.2 100 < 0.2
2015 2015-10-20 0.2 100 0.43
2015 2015-07-21 0.2 100 0.21
2015 2015-07-21 0.2 100 0.4
2015 2015-07-21 0.2 100 0.23
2015 2015-07-21 0.2 100 0.24
2015 2015-07-21 0.2 100 0.26
2015 2015-07-21 0.2 100 0.42
2015 2015-07-21 0.2 100 0.43
2015 2015-07-21 0.2 100 < 0.2
2015 2015-07-21 0.2 100 0.58
2015 2015-07-21 0.2 100 < 0.2
2015 2015-07-21 0.2 100 0.48
2015 2015-04-17 0.2 100 0.59
2015 2015-04-17 0.2 100 0.79
2015 2015-04-17 0.2 100 0.32
2015 2015-04-17 0.2 100 < 0.2
2015 2015-04-17 0.2 100 0.36
2015 2015-04-17 0.2 100 < 0.2
2015 2015-04-17 0.2 100 0.9
2015 2015-01-21 0.2 100 0.44
2015 2015-01-21 0.2 100 0.44
2015 2015-01-21 0.2 100 0.37
2015 2015-01-21 0.2 100 0.35
2015 2015-01-21 0.2 100 0.26
2015 2015-01-21 0.2 100 0.37
2015 2015-01-21 0.2 100 0.37
2015 2015-01-21 0.2 100 < 0.2
2015 2015-01-21 0.2 100 0.49
2015 2015-01-21 0.2 100 < 0.2
2015 2015-01-21 0.2 100 0.35
[+] Expand Test Data
chromium-6 0.03 0 0.2941 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.03 0 0.1
2015 2015-10-20 0.03 0 0.25
2015 2015-10-20 0.03 0 0.071
2015 2015-10-20 0.03 0 0.034
2015 2015-10-20 0.03 0 0.14
2015 2015-10-20 0.03 0 < 0.03
2015 2015-10-20 0.03 0 0.28
2015 2015-07-21 0.03 0 0.2
2015 2015-07-21 0.03 0 0.4
2015 2015-07-21 0.03 0 0.18
2015 2015-07-21 0.03 0 0.22
2015 2015-07-21 0.03 0 0.24
2015 2015-07-21 0.03 0 0.52
2015 2015-07-21 0.03 0 0.45
2015 2015-07-21 0.03 0 0.034
2015 2015-07-21 0.03 0 0.65
2015 2015-07-21 0.03 0 0.035
2015 2015-07-21 0.03 0 0.5
2015 2015-04-17 0.03 0 0.47
2015 2015-04-17 0.03 0 0.71
2015 2015-04-17 0.03 0 0.21
2015 2015-04-17 0.03 0 0.07
2015 2015-04-17 0.03 0 0.24
2015 2015-04-17 0.03 0 0.05
2015 2015-04-17 0.03 0 0.76
2015 2015-01-21 0.03 0 0.37
2015 2015-01-21 0.03 0 0.36
2015 2015-01-21 0.03 0 0.33
2015 2015-01-21 0.03 0 0.3
2015 2015-01-21 0.03 0 0.33
2015 2015-01-21 0.03 0 0.51
2015 2015-01-21 0.03 0 0.46
2015 2015-01-21 0.03 0 0.11
2015 2015-01-21 0.03 0 0.59
2015 2015-01-21 0.03 0 0.034
2015 2015-01-21 0.03 0 0.38
[+] Expand Test Data
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 1 70 < 1
2015 2015-10-20 1 70 < 1
2015 2015-10-20 1 70 < 1
2015 2015-10-20 1 70 < 1
2015 2015-10-20 1 70 < 1
2015 2015-10-20 1 70 < 1
2015 2015-10-20 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-07-21 1 70 < 1
2015 2015-04-17 1 70 < 1
2015 2015-04-17 1 70 < 1
2015 2015-04-17 1 70 < 1
2015 2015-04-17 1 70 < 1
2015 2015-04-17 1 70 < 1
2015 2015-04-17 1 70 < 1
2015 2015-04-17 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
2015 2015-01-21 1 70 < 1
[+] Expand Test Data
molybdenum 1 40 4 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 1 40 3.7
2015 2015-10-20 1 40 4
2015 2015-10-20 1 40 4.3
2015 2015-10-20 1 40 4.6
2015 2015-10-20 1 40 4.1
2015 2015-10-20 1 40 4.8
2015 2015-10-20 1 40 5.3
2015 2015-07-21 1 40 4
2015 2015-07-21 1 40 3.7
2015 2015-07-21 1 40 4
2015 2015-07-21 1 40 4.2
2015 2015-07-21 1 40 4.5
2015 2015-07-21 1 40 2.5
2015 2015-07-21 1 40 1.9
2015 2015-07-21 1 40 < 1
2015 2015-07-21 1 40 3.4
2015 2015-07-21 1 40 4.4
2015 2015-07-21 1 40 5.2
2015 2015-04-17 1 40 4
2015 2015-04-17 1 40 5.5
2015 2015-04-17 1 40 4.8
2015 2015-04-17 1 40 4.6
2015 2015-04-17 1 40 5
2015 2015-04-17 1 40 4.6
2015 2015-04-17 1 40 6.4
2015 2015-01-21 1 40 3.8
2015 2015-01-21 1 40 4.3
2015 2015-01-21 1 40 3.9
2015 2015-01-21 1 40 4.2
2015 2015-01-21 1 40 4
2015 2015-01-21 1 40 2.8
2015 2015-01-21 1 40 2.2
2015 2015-01-21 1 40 1.8
2015 2015-01-21 1 40 3.5
2015 2015-01-21 1 40 4.5
2015 2015-01-21 1 40 5.5
[+] Expand Test Data
strontium 0.3 1500 633.8889 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.3 1500 700
2015 2015-10-20 0.3 1500 340
2015 2015-10-20 0.3 1500 990
2015 2015-10-20 0.3 1500 1100
2015 2015-10-20 0.3 1500 760
2015 2015-10-20 0.3 1500 1200
2015 2015-10-20 0.3 1500 330
2015 2015-07-21 0.3 1500 770
2015 2015-07-21 0.3 1500 390
2015 2015-07-21 0.3 1500 750
2015 2015-07-21 0.3 1500 780
2015 2015-07-21 0.3 1500 790
2015 2015-07-21 0.3 1500 600
2015 2015-07-21 0.3 1500 430
2015 2015-07-21 0.3 1500 440
2015 2015-07-21 0.3 1500 390
2015 2015-07-21 0.3 1500 1100
2015 2015-07-21 0.3 1500 340
2015 2015-04-17 0.3 1500 490
2015 2015-04-17 0.3 1500 350
2015 2015-04-17 0.3 1500 930
2015 2015-04-17 0.3 1500 1100
2015 2015-04-17 0.3 1500 910
2015 2015-04-17 0.3 1500 1100
2015 2015-04-17 0.3 1500 360
2015 2015-01-21 0.3 1500 400
2015 2015-01-21 0.3 1500 390
2015 2015-01-21 0.3 1500 430
2015 2015-01-21 0.3 1500 500
2015 2015-01-21 0.3 1500 410
2015 2015-01-21 0.3 1500 610
2015 2015-01-21 0.3 1500 400
2015 2015-01-21 0.3 1500 430
2015 2015-01-21 0.3 1500 360
2015 2015-01-21 0.3 1500 1100
2015 2015-01-21 0.3 1500 350
[+] Expand Test Data
vanadium 0.2 21 3.2533 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.2 21 2.5
2015 2015-10-20 0.2 21 3.8
2015 2015-10-20 0.2 21 2.5
2015 2015-10-20 0.2 21 2.4
2015 2015-10-20 0.2 21 2.9
2015 2015-10-20 0.2 21 2.4
2015 2015-10-20 0.2 21 5.2
2015 2015-07-21 0.2 21 2.7
2015 2015-07-21 0.2 21 3.9
2015 2015-07-21 0.2 21 2.9
2015 2015-07-21 0.2 21 3.1
2015 2015-07-21 0.2 21 3.2
2015 2015-07-21 0.2 21 4
2015 2015-07-21 0.2 21 2.8
2015 2015-07-21 0.2 21 0.22
2015 2015-07-21 0.2 21 4.1
2015 2015-07-21 0.2 21 2.4
2015 2015-07-21 0.2 21 4.8
2015 2015-04-17 0.2 21 3.7
2015 2015-04-17 0.2 21 4.6
2015 2015-04-17 0.2 21 3.2
2015 2015-04-17 0.2 21 2.8
2015 2015-04-17 0.2 21 3.4
2015 2015-04-17 0.2 21 2.5
2015 2015-04-17 0.2 21 5.4
2015 2015-01-21 0.2 21 3.5
2015 2015-01-21 0.2 21 3.8
2015 2015-01-21 0.2 21 3.5
2015 2015-01-21 0.2 21 3.5
2015 2015-01-21 0.2 21 3.2
2015 2015-01-21 0.2 21 4.2
2015 2015-01-21 0.2 21 2.8
2015 2015-01-21 0.2 21 1.1
2015 2015-01-21 0.2 21 3.9
2015 2015-01-21 0.2 21 2.3
2015 2015-01-21 0.2 21 3.9
[+] Expand Test Data
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.03 6.14 < 0.03
2015 2015-10-20 0.03 6.14 < 0.03
2015 2015-07-21 0.03 6.14 < 0.03
2015 2015-07-21 0.03 6.14 < 0.03
2015 2015-07-21 0.03 6.14 < 0.03
2015 2015-07-21 0.03 6.14 < 0.03
2015 2015-07-21 0.03 6.14 < 0.03
2015 2015-07-21 0.03 6.14 < 0.03
2015 2015-04-17 0.03 6.14 < 0.03
2015 2015-04-17 0.03 6.14 < 0.03
2015 2015-01-21 0.03 6.14 < 0.03
2015 2015-01-21 0.03 6.14 < 0.03
2015 2015-01-21 0.03 6.14 < 0.03
2015 2015-01-21 0.03 6.14 < 0.03
2015 2015-01-21 0.03 6.14 < 0.03
2015 2015-01-21 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 2015-10-20 0.03 0.0004 < 0.03
2015 2015-10-20 0.03 0.0004 < 0.03
2015 2015-07-21 0.03 0.0004 < 0.03
2015 2015-07-21 0.03 0.0004 < 0.03
2015 2015-07-21 0.03 0.0004 < 0.03
2015 2015-07-21 0.03 0.0004 < 0.03
2015 2015-07-21 0.03 0.0004 < 0.03
2015 2015-07-21 0.03 0.0004 < 0.03
2015 2015-04-17 0.03 0.0004 < 0.03
2015 2015-04-17 0.03 0.0004 < 0.03
2015 2015-01-21 0.03 0.0004 < 0.03
2015 2015-01-21 0.03 0.0004 < 0.03
2015 2015-01-21 0.03 0.0004 < 0.03
2015 2015-01-21 0.03 0.0004 < 0.03
2015 2015-01-21 0.03 0.0004 < 0.03
2015 2015-01-21 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 2015-10-20 0.1 0.0103 < 0.1
2015 2015-10-20 0.1 0.0103 < 0.1
2015 2015-07-21 0.1 0.0103 < 0.1
2015 2015-07-21 0.1 0.0103 < 0.1
2015 2015-07-21 0.1 0.0103 < 0.1
2015 2015-07-21 0.1 0.0103 < 0.1
2015 2015-07-21 0.1 0.0103 < 0.1
2015 2015-07-21 0.1 0.0103 < 0.1
2015 2015-04-17 0.1 0.0103 < 0.1
2015 2015-04-17 0.1 0.0103 < 0.1
2015 2015-01-21 0.1 0.0103 < 0.1
2015 2015-01-21 0.1 0.0103 < 0.1
2015 2015-01-21 0.1 0.0103 < 0.1
2015 2015-01-21 0.1 0.0103 < 0.1
2015 2015-01-21 0.1 0.0103 < 0.1
2015 2015-01-21 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 2015-10-20 0.07 0.35 < 0.07
2015 2015-10-20 0.07 0.35 < 0.07
2015 2015-07-21 0.07 0.35 < 0.07
2015 2015-07-21 0.07 0.35 < 0.07
2015 2015-07-21 0.07 0.35 < 0.07
2015 2015-07-21 0.07 0.35 < 0.07
2015 2015-07-21 0.07 0.35 < 0.07
2015 2015-07-21 0.07 0.35 < 0.07
2015 2015-04-17 0.07 0.35 < 0.07
2015 2015-04-17 0.07 0.35 < 0.07
2015 2015-01-21 0.07 0.35 < 0.07
2015 2015-01-21 0.07 0.35 < 0.07
2015 2015-01-21 0.07 0.35 < 0.07
2015 2015-01-21 0.07 0.35 < 0.07
2015 2015-01-21 0.07 0.35 < 0.07
2015 2015-01-21 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 2015-10-20 0.2 140 < 0.2
2015 2015-10-20 0.2 140 < 0.2
2015 2015-07-21 0.2 140 < 0.2
2015 2015-07-21 0.2 140 < 0.2
2015 2015-07-21 0.2 140 < 0.2
2015 2015-07-21 0.2 140 < 0.2
2015 2015-07-21 0.2 140 < 0.2
2015 2015-07-21 0.2 140 < 0.2
2015 2015-04-17 0.2 140 < 0.2
2015 2015-04-17 0.2 140 < 0.2
2015 2015-01-21 0.2 140 < 0.2
2015 2015-01-21 0.2 140 < 0.2
2015 2015-01-21 0.2 140 < 0.2
2015 2015-01-21 0.2 140 < 0.2
2015 2015-01-21 0.2 140 < 0.2
2015 2015-01-21 0.2 140 < 0.2
[+] Expand Test Data
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.2 2.69 < 0.2
2015 2015-10-20 0.2 2.69 < 0.2
2015 2015-07-21 0.2 2.69 < 0.2
2015 2015-07-21 0.2 2.69 < 0.2
2015 2015-07-21 0.2 2.69 < 0.2
2015 2015-07-21 0.2 2.69 < 0.2
2015 2015-07-21 0.2 2.69 < 0.2
2015 2015-07-21 0.2 2.69 < 0.2
2015 2015-04-17 0.2 2.69 < 0.2
2015 2015-04-17 0.2 2.69 < 0.2
2015 2015-01-21 0.2 2.69 < 0.2
2015 2015-01-21 0.2 2.69 < 0.2
2015 2015-01-21 0.2 2.69 < 0.2
2015 2015-01-21 0.2 2.69 < 0.2
2015 2015-01-21 0.2 2.69 < 0.2
2015 2015-01-21 0.2 2.69 < 0.2
[+] Expand Test Data
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.06 90 < 0.06
2015 2015-10-20 0.06 90 < 0.06
2015 2015-07-21 0.06 90 < 0.06
2015 2015-07-21 0.06 90 < 0.06
2015 2015-07-21 0.06 90 < 0.06
2015 2015-07-21 0.06 90 < 0.06
2015 2015-07-21 0.06 90 < 0.06
2015 2015-07-21 0.06 90 < 0.06
2015 2015-04-17 0.06 90 < 0.06
2015 2015-04-17 0.06 90 < 0.06
2015 2015-01-21 0.06 90 < 0.06
2015 2015-01-21 0.06 90 < 0.06
2015 2015-01-21 0.06 90 < 0.06
2015 2015-01-21 0.06 90 < 0.06
2015 2015-01-21 0.06 90 < 0.06
2015 2015-01-21 0.06 90 < 0.06
[+] Expand Test Data
HCFC-22 0.08 0 0.0556 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.08 0 < 0.08
2015 2015-10-20 0.08 0 < 0.08
2015 2015-07-21 0.08 0 < 0.08
2015 2015-07-21 0.08 0 < 0.08
2015 2015-07-21 0.08 0 0.37
2015 2015-07-21 0.08 0 0.089
2015 2015-07-21 0.08 0 < 0.08
2015 2015-07-21 0.08 0 < 0.08
2015 2015-04-17 0.08 0 < 0.08
2015 2015-04-17 0.08 0 < 0.08
2015 2015-01-21 0.08 0 < 0.08
2015 2015-01-21 0.08 0 < 0.08
2015 2015-01-21 0.08 0 0.43
2015 2015-01-21 0.08 0 < 0.08
2015 2015-01-21 0.08 0 < 0.08
2015 2015-01-21 0.08 0 < 0.08
[+] Expand Test Data
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2015 2015-10-20 0.09 0 < 0.09
2015 2015-10-20 0.09 0 < 0.09
2015 2015-07-21 0.09 0 < 0.09
2015 2015-07-21 0.09 0 < 0.09
2015 2015-07-21 0.09 0 < 0.09
2015 2015-07-21 0.09 0 < 0.09
2015 2015-07-21 0.09 0 < 0.09
2015 2015-07-21 0.09 0 < 0.09
2015 2015-04-17 0.09 0 < 0.09
2015 2015-04-17 0.09 0 < 0.09
2015 2015-01-21 0.09 0 < 0.09
2015 2015-01-21 0.09 0 < 0.09
2015 2015-01-21 0.09 0 < 0.09
2015 2015-01-21 0.09 0 < 0.09
2015 2015-01-21 0.09 0 < 0.09
2015 2015-01-21 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 2015-10-20 0.01 0 < 0.01
2015 2015-10-20 0.01 0 < 0.01
2015 2015-07-21 0.01 0 < 0.01
2015 2015-07-21 0.01 0 < 0.01
2015 2015-07-21 0.01 0 < 0.01
2015 2015-07-21 0.01 0 < 0.01
2015 2015-07-21 0.01 0 < 0.01
2015 2015-07-21 0.01 0 < 0.01
2015 2015-04-17 0.01 0 < 0.01
2015 2015-04-17 0.01 0 < 0.01
2015 2015-01-21 0.01 0 < 0.01
2015 2015-01-21 0.01 0 < 0.01
2015 2015-01-21 0.01 0 < 0.01
2015 2015-01-21 0.01 0 < 0.01
2015 2015-01-21 0.01 0 < 0.01
2015 2015-01-21 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 2015-10-20 0.03 0 < 0.03
2015 2015-10-20 0.03 0 < 0.03
2015 2015-07-21 0.03 0 < 0.03
2015 2015-07-21 0.03 0 < 0.03
2015 2015-07-21 0.03 0 < 0.03
2015 2015-07-21 0.03 0 < 0.03
2015 2015-07-21 0.03 0 < 0.03
2015 2015-07-21 0.03 0 < 0.03
2015 2015-04-17 0.03 0 < 0.03
2015 2015-04-17 0.03 0 < 0.03
2015 2015-01-21 0.03 0 < 0.03
2015 2015-01-21 0.03 0 < 0.03
2015 2015-01-21 0.03 0 < 0.03
2015 2015-01-21 0.03 0 < 0.03
2015 2015-01-21 0.03 0 < 0.03
2015 2015-01-21 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 2015-10-20 0.02 0 < 0.02
2015 2015-10-20 0.02 0 < 0.02
2015 2015-07-21 0.02 0 < 0.02
2015 2015-07-21 0.02 0 < 0.02
2015 2015-07-21 0.02 0 < 0.02
2015 2015-07-21 0.02 0 < 0.02
2015 2015-07-21 0.02 0 < 0.02
2015 2015-07-21 0.02 0 < 0.02
2015 2015-04-17 0.02 0 < 0.02
2015 2015-04-17 0.02 0 < 0.02
2015 2015-01-21 0.02 0 < 0.02
2015 2015-01-21 0.02 0 < 0.02
2015 2015-01-21 0.02 0 < 0.02
2015 2015-01-21 0.02 0 < 0.02
2015 2015-01-21 0.02 0 < 0.02
2015 2015-01-21 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 2015-10-20 0.02 0.07 < 0.02
2015 2015-10-20 0.02 0.07 < 0.02
2015 2015-07-21 0.02 0.07 < 0.02
2015 2015-07-21 0.02 0.07 < 0.02
2015 2015-07-21 0.02 0.07 < 0.02
2015 2015-07-21 0.02 0.07 < 0.02
2015 2015-07-21 0.02 0.07 < 0.02
2015 2015-07-21 0.02 0.07 < 0.02
2015 2015-04-17 0.02 0.07 < 0.02
2015 2015-04-17 0.02 0.07 < 0.02
2015 2015-01-21 0.02 0.07 < 0.02
2015 2015-01-21 0.02 0.07 < 0.02
2015 2015-01-21 0.02 0.07 < 0.02
2015 2015-01-21 0.02 0.07 < 0.02
2015 2015-01-21 0.02 0.07 < 0.02
2015 2015-01-21 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 2015-10-20 0.04 0.07 < 0.04
2015 2015-10-20 0.04 0.07 < 0.04
2015 2015-07-21 0.04 0.07 < 0.04
2015 2015-07-21 0.04 0.07 < 0.04
2015 2015-07-21 0.04 0.07 < 0.04
2015 2015-07-21 0.04 0.07 < 0.04
2015 2015-07-21 0.04 0.07 < 0.04
2015 2015-07-21 0.04 0.07 < 0.04
2015 2015-04-17 0.04 0.07 < 0.04
2015 2015-04-17 0.04 0.07 < 0.04
2015 2015-01-21 0.04 0.07 < 0.04
2015 2015-01-21 0.04 0.07 < 0.04
2015 2015-01-21 0.04 0.07 < 0.04
2015 2015-01-21 0.04 0.07 < 0.04
2015 2015-01-21 0.04 0.07 < 0.04
2015 2015-01-21 0.04 0.07 < 0.04
[+] 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
CA57878 lead 2015-01-01 2017-12-31 0mg/L
CA63161 lead 2015-01-01 2017-12-31 0mg/L
CA41724 lead 2012-01-01 2014-12-31 0.004mg/L
191014211181L lead 2011-01-01 2011-12-31 0.005mg/L
191014211195L lead 2011-01-01 2011-12-31 0.005mg/L
191014211207L lead 2011-01-01 2011-12-31 0.006mg/L
191014211208LT1 lead 2011-01-01 2011-12-31 0.005mg/L
191014211213LT1 lead 2011-01-01 2011-12-31 0.0042mg/L
191014211220L lead 2011-01-01 2011-12-31 0.005mg/L
191014211229LT2 lead 2011-01-01 2011-12-31 0.005mg/L
191014211253LT3 lead 2011-01-01 2011-12-31 0.003mg/L
191014211270LT4 lead 2011-01-01 2011-12-31 0.004mg/L
CA31665 lead 2009-01-01 2011-12-31 0.0042mg/L
191014208205L lead 2008-01-01 2008-12-31 0.0044mg/L
191014208205LT4 lead 2008-01-01 2008-12-31 0.004mg/L

Violations

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

Compliance Dates Rule Violation Type Contaminant Name Status
- N/A Nitrates Maximum Contaminant Level Violation, Average Nitrate Returned to Compliance
- N/A Nitrates Maximum Contaminant Level Violation, Average Nitrate 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.

Unable to identify any nearby water testing labs near 91773.

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about Gswc-san Dimas (CA1910142).

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.