Public Water System: Gswc-south Arcadia
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: CA1910212
Type : Community water system
EPA Region : 09
Primary Service Area: Residential Area
Primary Source: Ground water
Population Served: 26,277
Contact Information
CHAKMAK, ALEX CHAKMAK, ALEX 401 S. San Dimas Canyon Rd. SAN DIMAS, CA 91773
This public water system services 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)
2016 (0)
2017 (0)
2018 (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).
Below health limit
Exceeded health limit
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
20
210
83
2014
2014-06-24
20
210
260
2014
2014-06-24
20
210
73
2014
2014-06-24
20
210
94
2014
2014-06-24
20
210
95
2014
2014-06-24
20
210
230
2014
2014-06-24
20
210
71
2014
2014-06-24
20
210
140
2014
2014-06-24
20
210
310
2013
2013-12-18
20
210
46
2013
2013-12-18
20
210
94
2013
2013-12-18
20
210
66
2013
2013-12-18
20
210
44
2013
2013-12-18
20
210
56
2013
2013-12-18
20
210
100
2013
2013-12-18
20
210
68
2013
2013-12-18
20
210
71
2013
2013-12-18
20
210
93
Other Water Contaminants Tested
The following contaminants were tested and within national EPA guidelines.
Contaminant
MRL
HRL
Avg Result
chromium
0.2
100
2.4561
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.2
100
2.3
2014
2014-06-24
0.2
100
0.94
2014
2014-06-24
0.2
100
0.65
2014
2014-06-24
0.2
100
2.2
2014
2014-06-24
0.2
100
2.3
2014
2014-06-24
0.2
100
6.1
2014
2014-06-24
0.2
100
0.64
2014
2014-06-24
0.2
100
1.7
2014
2014-06-24
0.2
100
0.64
2013
2013-12-18
0.2
100
6.2
2013
2013-12-18
0.2
100
0.65
2013
2013-12-18
0.2
100
0.96
2013
2013-12-18
0.2
100
6.2
2013
2013-12-18
0.2
100
6.1
2013
2013-12-18
0.2
100
4.5
2013
2013-12-18
0.2
100
0.43
2013
2013-12-18
0.2
100
1.2
2013
2013-12-18
0.2
100
0.5
[+] Expand Test Data
chromium-6
0.03
0
2.7317
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.03
0
2.3
2014
2014-06-24
0.03
0
1
2014
2014-06-24
0.03
0
0.66
2014
2014-06-24
0.03
0
2.3
2014
2014-06-24
0.03
0
2.4
2014
2014-06-24
0.03
0
5.9
2014
2014-06-24
0.03
0
0.67
2014
2014-06-24
0.03
0
1.8
2014
2014-06-24
0.03
0
0.63
2013
2013-12-18
0.03
0
7
2013
2013-12-18
0.03
0
0.81
2013
2013-12-18
0.03
0
1.2
2013
2013-12-18
0.03
0
7.2
2013
2013-12-18
0.03
0
7.2
2013
2013-12-18
0.03
0
5.1
2013
2013-12-18
0.03
0
0.6
2013
2013-12-18
0.03
0
1.7
2013
2013-12-18
0.03
0
0.7
[+] Expand Test Data
cobalt
1
70
< 1
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
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
2014-06-24
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
2014-06-24
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
2013
2013-12-18
1
70
< 1
2013
2013-12-18
1
70
< 1
[+] Expand Test Data
molybdenum
1
40
1.8333
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
1
40
2.5
2014
2014-06-24
1
40
< 1
2014
2014-06-24
1
40
2.6
2014
2014-06-24
1
40
2.5
2014
2014-06-24
1
40
2.3
2014
2014-06-24
1
40
2.1
2014
2014-06-24
1
40
2.6
2014
2014-06-24
1
40
< 1
2014
2014-06-24
1
40
< 1
2013
2013-12-18
1
40
4.2
2013
2013-12-18
1
40
< 1
2013
2013-12-18
1
40
1.5
2013
2013-12-18
1
40
4.2
2013
2013-12-18
1
40
4.1
2013
2013-12-18
1
40
2
2013
2013-12-18
1
40
2.4
2013
2013-12-18
1
40
< 1
2013
2013-12-18
1
40
< 1
[+] Expand Test Data
strontium
0.3
1500
273.3333
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.3
1500
290
2014
2014-06-24
0.3
1500
290
2014
2014-06-24
0.3
1500
260
2014
2014-06-24
0.3
1500
270
2014
2014-06-24
0.3
1500
280
2014
2014-06-24
0.3
1500
310
2014
2014-06-24
0.3
1500
250
2014
2014-06-24
0.3
1500
280
2014
2014-06-24
0.3
1500
300
2013
2013-12-18
0.3
1500
260
2013
2013-12-18
0.3
1500
290
2013
2013-12-18
0.3
1500
270
2013
2013-12-18
0.3
1500
270
2013
2013-12-18
0.3
1500
250
2013
2013-12-18
0.3
1500
280
2013
2013-12-18
0.3
1500
230
2013
2013-12-18
0.3
1500
260
2013
2013-12-18
0.3
1500
280
[+] Expand Test Data
vanadium
0.2
21
4.1
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.2
21
1.9
2014
2014-06-24
0.2
21
4.7
2014
2014-06-24
0.2
21
4.9
2014
2014-06-24
0.2
21
1.8
2014
2014-06-24
0.2
21
1.7
2014
2014-06-24
0.2
21
5.3
2014
2014-06-24
0.2
21
4.9
2014
2014-06-24
0.2
21
5.2
2014
2014-06-24
0.2
21
5
2013
2013-12-18
0.2
21
4.7
2013
2013-12-18
0.2
21
4.2
2013
2013-12-18
0.2
21
4.1
2013
2013-12-18
0.2
21
4.6
2013
2013-12-18
0.2
21
4.5
2013
2013-12-18
0.2
21
4.3
2013
2013-12-18
0.2
21
3.9
2013
2013-12-18
0.2
21
4.2
2013
2013-12-18
0.2
21
3.9
[+] Expand Test Data
1,1-dichloroethane
0.03
6.14
0.008
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.03
6.14
< 0.03
2014
2014-06-24
0.03
6.14
0.041
2014
2014-06-24
0.03
6.14
< 0.03
2014
2014-06-24
0.03
6.14
< 0.03
2014
2014-06-24
0.03
6.14
< 0.03
2013
2013-12-18
0.03
6.14
< 0.03
2013
2013-12-18
0.03
6.14
0.039
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
[+] Expand Test Data
1,2,3-trichloropropane
0.03
0.0004
< 0.03
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
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
2014-06-24
0.03
0.0004
< 0.03
2014
2014-06-24
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
2013
2013-12-18
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
2014
2014-06-24
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
2014-06-24
0.1
0.0103
< 0.1
2014
2014-06-24
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
2013
2013-12-18
0.1
0.0103
< 0.1
[+] Expand Test Data
1,4-dioxane
0.07
0.35
0.0865
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.07
0.35
< 0.07
2014
2014-06-24
0.07
0.35
0.16
2014
2014-06-24
0.07
0.35
< 0.07
2014
2014-06-24
0.07
0.35
0.098
2014
2014-06-24
0.07
0.35
0.19
2013
2013-12-18
0.07
0.35
< 0.07
2013
2013-12-18
0.07
0.35
0.15
2013
2013-12-18
0.07
0.35
< 0.07
2013
2013-12-18
0.07
0.35
0.087
2013
2013-12-18
0.07
0.35
0.18
[+] Expand Test Data
bromomethane
0.2
140
< 0.2
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.2
140
< 0.2
2014
2014-06-24
0.2
140
< 0.2
2014
2014-06-24
0.2
140
< 0.2
2014
2014-06-24
0.2
140
< 0.2
2014
2014-06-24
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
2013
2013-12-18
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
2014
2014-06-24
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
2014-06-24
0.2
2.69
< 0.2
2014
2014-06-24
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
2013
2013-12-18
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
2014
2014-06-24
0.06
90
< 0.06
2014
2014-06-24
0.06
90
< 0.06
2014
2014-06-24
0.06
90
< 0.06
2014
2014-06-24
0.06
90
< 0.06
2014
2014-06-24
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
2013
2013-12-18
0.06
90
< 0.06
[+] Expand Test Data
HCFC-22
0.08
0
0.027
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.08
0
< 0.08
2014
2014-06-24
0.08
0
0.14
2014
2014-06-24
0.08
0
< 0.08
2014
2014-06-24
0.08
0
< 0.08
2014
2014-06-24
0.08
0
< 0.08
2013
2013-12-18
0.08
0
< 0.08
2013
2013-12-18
0.08
0
0.13
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
[+] Expand Test Data
PFBS
0.09
0
< 0.09
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.09
0
< 0.09
2014
2014-06-24
0.09
0
< 0.09
2014
2014-06-24
0.09
0
< 0.09
2014
2014-06-24
0.09
0
< 0.09
2014
2014-06-24
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
2013
2013-12-18
0.09
0
< 0.09
[+] Expand Test Data
PFHpA
0.01
0
< 0.01
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.01
0
< 0.01
2014
2014-06-24
0.01
0
< 0.01
2014
2014-06-24
0.01
0
< 0.01
2014
2014-06-24
0.01
0
< 0.01
2014
2014-06-24
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
2013
2013-12-18
0.01
0
< 0.01
[+] Expand Test Data
PFHxS
0.03
0
< 0.03
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.03
0
< 0.03
2014
2014-06-24
0.03
0
< 0.03
2014
2014-06-24
0.03
0
< 0.03
2014
2014-06-24
0.03
0
< 0.03
2014
2014-06-24
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
2013
2013-12-18
0.03
0
< 0.03
[+] Expand Test Data
PFNA
0.02
0
< 0.02
[+] Expand Test Data
Year
Test Date
MRL
HRL
Test Result
2014
2014-06-24
0.02
0
< 0.02
2014
2014-06-24
0.02
0
< 0.02
2014
2014-06-24
0.02
0
< 0.02
2014
2014-06-24
0.02
0
< 0.02
2014
2014-06-24
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
2013
2013-12-18
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
2014
2014-06-24
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
2014-06-24
0.02
0.07
< 0.02
2014
2014-06-24
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
2013
2013-12-18
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
2014
2014-06-24
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
2014-06-24
0.04
0.07
< 0.04
2014
2014-06-24
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
2013
2013-12-18
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. 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
CA57922
lead
2015-01-01
2017-12-31
0mg/L
CA41725
lead
2012-01-01
2014-12-31
0.001mg/L
191021211244LT3
lead
2011-01-01
2011-12-31
0.001mg/L
191021211251L
lead
2011-01-01
2011-12-31
0.005mg/L
191021211200L1ST 6
lead
2011-01-01
2011-12-31
0.005mg/L
191021211230LYR1994
lead
2011-01-01
2011-12-31
0.005mg/L
191021209264LT2
lead
2009-01-01
2009-12-31
0.003mg/L
191021209273LT1
lead
2009-01-01
2009-12-31
0.002mg/L
191021208206LT2
lead
2008-01-01
2008-12-31
0.003mg/L
191021208222L
lead
2008-01-01
2008-12-31
0.005mg/L
191021208206L
lead
2008-01-01
2008-12-31
0.0027mg/L
Violations
Known violations of the Safe Drinking Water Act as recorded by the EPA.
Compliance Dates
Rule
Violation Type
Contaminant Name
Status
2000-06-20 - 2000-10-19
Miscellaneous
Operations Report
-
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.