Public Water System: Gswc - Norwalk

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: CA1910098
Type: Community water system
EPA Region: 09
Primary Source: Surface water purchased
Population Served: 44,116
Contact Information
MILLER, LISA
MILLER, LISA
12035 Burke Street, Suite 1
SANTA FE SPRINGS, CA 90670

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   (2) 2014   (2) 2015   (0)
chlorate
1,4-dioxane
1,4-dioxane
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).

1,4-dioxane
Is this in your home's pipes?

Year Test Date MRL HRL Test Result
2014 2014-07-17 0.07 0.35 < 0.07
2014 2014-06-04 0.07 0.35 3.5
2014 2014-04-17 0.07 0.35 3.9
2014 2014-04-17 0.07 0.35 1.6
2014 2014-04-17 0.07 0.35 < 0.07
2014 2014-04-17 0.07 0.35 5.9
2014 2014-01-17 0.07 0.35 < 0.07
2014 2014-01-17 0.07 0.35 0.86
2013 2013-10-18 0.07 0.35 < 0.07
2013 2013-10-18 0.07 0.35 3.3
2013 2013-10-18 0.07 0.35 1.3
2013 2013-10-18 0.07 0.35 5.3

chlorate
Is this in your home's pipes?

Year Test Date MRL HRL Test Result
2014 2014-07-17 20 210 76
2014 2014-07-17 20 210 75
2014 2014-06-04 20 210 210
2014 2014-04-17 20 210 170
2014 2014-04-17 20 210 170
2014 2014-04-17 20 210 84
2014 2014-04-17 20 210 210
2014 2014-04-17 20 210 61
2014 2014-04-17 20 210 45
2014 2014-04-17 20 210 39
2014 2014-04-17 20 210 160
2014 2014-01-17 20 210 41
2014 2014-01-17 20 210 42
2014 2014-01-17 20 210 94
2013 2013-10-18 20 210 200
2013 2013-10-18 20 210 49
2013 2013-10-18 20 210 190
2013 2013-10-18 20 210 140
2013 2013-10-18 20 210 250
2013 2013-10-18 20 210 49
2013 2013-10-18 20 210 44
2013 2013-10-18 20 210 240

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
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.2 140 < 0.2
2014 2014-06-04 0.2 140 < 0.2
2014 2014-04-17 0.2 140 < 0.2
2014 2014-04-17 0.2 140 < 0.2
2014 2014-04-17 0.2 140 < 0.2
2014 2014-04-17 0.2 140 < 0.2
2014 2014-01-17 0.2 140 < 0.2
2014 2014-01-17 0.2 140 < 0.2
2013 2013-10-18 0.2 140 < 0.2
2013 2013-10-18 0.2 140 < 0.2
2013 2013-10-18 0.2 140 < 0.2
2013 2013-10-18 0.2 140 < 0.2
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.06 90 < 0.06
2014 2014-06-04 0.06 90 < 0.06
2014 2014-04-17 0.06 90 < 0.06
2014 2014-04-17 0.06 90 < 0.06
2014 2014-04-17 0.06 90 < 0.06
2014 2014-04-17 0.06 90 < 0.06
2014 2014-01-17 0.06 90 < 0.06
2014 2014-01-17 0.06 90 < 0.06
2013 2013-10-18 0.06 90 < 0.06
2013 2013-10-18 0.06 90 < 0.06
2013 2013-10-18 0.06 90 < 0.06
2013 2013-10-18 0.06 90 < 0.06
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 1 70 < 1
2014 2014-07-17 1 70 < 1
2014 2014-06-04 1 70 < 1
2014 2014-04-17 1 70 < 1
2014 2014-04-17 1 70 < 1
2014 2014-04-17 1 70 < 1
2014 2014-04-17 1 70 < 1
2014 2014-04-17 1 70 < 1
2014 2014-04-17 1 70 < 1
2014 2014-04-17 1 70 < 1
2014 2014-04-17 1 70 < 1
2014 2014-01-17 1 70 < 1
2014 2014-01-17 1 70 < 1
2014 2014-01-17 1 70 < 1
2013 2013-10-18 1 70 < 1
2013 2013-10-18 1 70 < 1
2013 2013-10-18 1 70 < 1
2013 2013-10-18 1 70 < 1
2013 2013-10-18 1 70 < 1
2013 2013-10-18 1 70 < 1
2013 2013-10-18 1 70 < 1
2013 2013-10-18 1 70 < 1
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.2 2.69 < 0.2
2014 2014-06-04 0.2 2.69 < 0.2
2014 2014-04-17 0.2 2.69 < 0.2
2014 2014-04-17 0.2 2.69 < 0.2
2014 2014-04-17 0.2 2.69 < 0.2
2014 2014-04-17 0.2 2.69 < 0.2
2014 2014-01-17 0.2 2.69 < 0.2
2014 2014-01-17 0.2 2.69 < 0.2
2013 2013-10-18 0.2 2.69 < 0.2
2013 2013-10-18 0.2 2.69 < 0.2
2013 2013-10-18 0.2 2.69 < 0.2
2013 2013-10-18 0.2 2.69 < 0.2
vanadium 0.2 21 2.7 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.2 21 3.1
2014 2014-07-17 0.2 21 3
2014 2014-06-04 0.2 21 3
2014 2014-04-17 0.2 21 3.1
2014 2014-04-17 0.2 21 2.6
2014 2014-04-17 0.2 21 3
2014 2014-04-17 0.2 21 2.6
2014 2014-04-17 0.2 21 2.3
2014 2014-04-17 0.2 21 2.8
2014 2014-04-17 0.2 21 2.5
2014 2014-04-17 0.2 21 3
2014 2014-01-17 0.2 21 2.3
2014 2014-01-17 0.2 21 2.3
2014 2014-01-17 0.2 21 3.3
2013 2013-10-18 0.2 21 2.6
2013 2013-10-18 0.2 21 2.8
2013 2013-10-18 0.2 21 2.5
2013 2013-10-18 0.2 21 2.4
2013 2013-10-18 0.2 21 2.6
2013 2013-10-18 0.2 21 2.6
2013 2013-10-18 0.2 21 2.5
2013 2013-10-18 0.2 21 2.5
molybdenum 1 40 2.7136 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 1 40 4.8
2014 2014-07-17 1 40 4.8
2014 2014-06-04 1 40 1.6
2014 2014-04-17 1 40 1.6
2014 2014-04-17 1 40 1.5
2014 2014-04-17 1 40 1.6
2014 2014-04-17 1 40 4.4
2014 2014-04-17 1 40 1.6
2014 2014-04-17 1 40 1.8
2014 2014-04-17 1 40 4.8
2014 2014-04-17 1 40 1.5
2014 2014-01-17 1 40 4.7
2014 2014-01-17 1 40 5
2014 2014-01-17 1 40 2.6
2013 2013-10-18 1 40 1.6
2013 2013-10-18 1 40 4.2
2013 2013-10-18 1 40 1.6
2013 2013-10-18 1 40 1.4
2013 2013-10-18 1 40 1.6
2013 2013-10-18 1 40 4
2013 2013-10-18 1 40 1.6
2013 2013-10-18 1 40 1.4
chromium-6 0.03 0 1.3535 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.03 0 0.059
2014 2014-07-17 0.03 0 0.058
2014 2014-06-04 0.03 0 9
2014 2014-04-17 0.03 0 1.9
2014 2014-04-17 0.03 0 2.2
2014 2014-04-17 0.03 0 5.9
2014 2014-04-17 0.03 0 0.067
2014 2014-04-17 0.03 0 0.79
2014 2014-04-17 0.03 0 0.76
2014 2014-04-17 0.03 0 0.038
2014 2014-04-17 0.03 0 1.3
2014 2014-01-17 0.03 0 < 0.03
2014 2014-01-17 0.03 0 < 0.03
2014 2014-01-17 0.03 0 1
2013 2013-10-18 0.03 0 1.7
2013 2013-10-18 0.03 0 0.059
2013 2013-10-18 0.03 0 1.8
2013 2013-10-18 0.03 0 1.1
2013 2013-10-18 0.03 0 0.71
2013 2013-10-18 0.03 0 0.067
2013 2013-10-18 0.03 0 0.76
2013 2013-10-18 0.03 0 0.51
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.01 0 < 0.01
2014 2014-06-04 0.01 0 < 0.01
2014 2014-04-17 0.01 0 < 0.01
2014 2014-04-17 0.01 0 < 0.01
2014 2014-04-17 0.01 0 < 0.01
2014 2014-04-17 0.01 0 < 0.01
2014 2014-01-17 0.01 0 < 0.01
2014 2014-01-17 0.01 0 < 0.01
2013 2013-10-18 0.01 0 < 0.01
2013 2013-10-18 0.01 0 < 0.01
2013 2013-10-18 0.01 0 < 0.01
2013 2013-10-18 0.01 0 < 0.01
chromium 0.2 100 1.3036 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.2 100 < 0.2
2014 2014-07-17 0.2 100 < 0.2
2014 2014-06-04 0.2 100 7.8
2014 2014-04-17 0.2 100 2
2014 2014-04-17 0.2 100 2.2
2014 2014-04-17 0.2 100 5.7
2014 2014-04-17 0.2 100 < 0.2
2014 2014-04-17 0.2 100 0.81
2014 2014-04-17 0.2 100 0.88
2014 2014-04-17 0.2 100 < 0.2
2014 2014-04-17 0.2 100 1.6
2014 2014-01-17 0.2 100 < 0.2
2014 2014-01-17 0.2 100 < 0.2
2014 2014-01-17 0.2 100 0.99
2013 2013-10-18 0.2 100 1.5
2013 2013-10-18 0.2 100 < 0.2
2013 2013-10-18 0.2 100 1.1
2013 2013-10-18 0.2 100 0.7
2013 2013-10-18 0.2 100 1.6
2013 2013-10-18 0.2 100 < 0.2
2013 2013-10-18 0.2 100 0.7
2013 2013-10-18 0.2 100 1.1
strontium 0.3 1500 798.1818 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.3 1500 1200
2014 2014-07-17 0.3 1500 1100
2014 2014-06-04 0.3 1500 820
2014 2014-04-17 0.3 1500 720
2014 2014-04-17 0.3 1500 850
2014 2014-04-17 0.3 1500 760
2014 2014-04-17 0.3 1500 460
2014 2014-04-17 0.3 1500 910
2014 2014-04-17 0.3 1500 500
2014 2014-04-17 0.3 1500 980
2014 2014-04-17 0.3 1500 960
2014 2014-01-17 0.3 1500 1000
2014 2014-01-17 0.3 1500 1000
2014 2014-01-17 0.3 1500 500
2013 2013-10-18 0.3 1500 670
2013 2013-10-18 0.3 1500 890
2013 2013-10-18 0.3 1500 680
2013 2013-10-18 0.3 1500 920
2013 2013-10-18 0.3 1500 460
2013 2013-10-18 0.3 1500 850
2013 2013-10-18 0.3 1500 450
2013 2013-10-18 0.3 1500 880
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.02 0.07 < 0.02
2014 2014-06-04 0.02 0.07 < 0.02
2014 2014-04-17 0.02 0.07 < 0.02
2014 2014-04-17 0.02 0.07 < 0.02
2014 2014-04-17 0.02 0.07 < 0.02
2014 2014-04-17 0.02 0.07 < 0.02
2014 2014-01-17 0.02 0.07 < 0.02
2014 2014-01-17 0.02 0.07 < 0.02
2013 2013-10-18 0.02 0.07 < 0.02
2013 2013-10-18 0.02 0.07 < 0.02
2013 2013-10-18 0.02 0.07 < 0.02
2013 2013-10-18 0.02 0.07 < 0.02
1,1-dichloroethane 0.03 6.14 0.0611 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.03 6.14 < 0.03
2014 2014-06-04 0.03 6.14 0.2
2014 2014-04-17 0.03 6.14 < 0.03
2014 2014-04-17 0.03 6.14 < 0.03
2014 2014-04-17 0.03 6.14 < 0.03
2014 2014-04-17 0.03 6.14 0.048
2014 2014-01-17 0.03 6.14 < 0.03
2014 2014-01-17 0.03 6.14 0.23
2013 2013-10-18 0.03 6.14 < 0.03
2013 2013-10-18 0.03 6.14 0.075
2013 2013-10-18 0.03 6.14 < 0.03
2013 2013-10-18 0.03 6.14 0.18
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.1 0.0103 < 0.1
2014 2014-06-04 0.1 0.0103 < 0.1
2014 2014-04-17 0.1 0.0103 < 0.1
2014 2014-04-17 0.1 0.0103 < 0.1
2014 2014-04-17 0.1 0.0103 < 0.1
2014 2014-04-17 0.1 0.0103 < 0.1
2014 2014-01-17 0.1 0.0103 < 0.1
2014 2014-01-17 0.1 0.0103 < 0.1
2013 2013-10-18 0.1 0.0103 < 0.1
2013 2013-10-18 0.1 0.0103 < 0.1
2013 2013-10-18 0.1 0.0103 < 0.1
2013 2013-10-18 0.1 0.0103 < 0.1
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.08 0 < 0.08
2014 2014-06-04 0.08 0 < 0.08
2014 2014-04-17 0.08 0 < 0.08
2014 2014-04-17 0.08 0 < 0.08
2014 2014-04-17 0.08 0 < 0.08
2014 2014-04-17 0.08 0 < 0.08
2014 2014-01-17 0.08 0 < 0.08
2014 2014-01-17 0.08 0 < 0.08
2013 2013-10-18 0.08 0 < 0.08
2013 2013-10-18 0.08 0 < 0.08
2013 2013-10-18 0.08 0 < 0.08
2013 2013-10-18 0.08 0 < 0.08
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.09 0 < 0.09
2014 2014-06-04 0.09 0 < 0.09
2014 2014-04-17 0.09 0 < 0.09
2014 2014-04-17 0.09 0 < 0.09
2014 2014-04-17 0.09 0 < 0.09
2014 2014-04-17 0.09 0 < 0.09
2014 2014-01-17 0.09 0 < 0.09
2014 2014-01-17 0.09 0 < 0.09
2013 2013-10-18 0.09 0 < 0.09
2013 2013-10-18 0.09 0 < 0.09
2013 2013-10-18 0.09 0 < 0.09
2013 2013-10-18 0.09 0 < 0.09
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.02 0 < 0.02
2014 2014-06-04 0.02 0 < 0.02
2014 2014-04-17 0.02 0 < 0.02
2014 2014-04-17 0.02 0 < 0.02
2014 2014-04-17 0.02 0 < 0.02
2014 2014-04-17 0.02 0 < 0.02
2014 2014-01-17 0.02 0 < 0.02
2014 2014-01-17 0.02 0 < 0.02
2013 2013-10-18 0.02 0 < 0.02
2013 2013-10-18 0.02 0 < 0.02
2013 2013-10-18 0.02 0 < 0.02
2013 2013-10-18 0.02 0 < 0.02
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.03 0.0004 < 0.03
2014 2014-06-04 0.03 0.0004 < 0.03
2014 2014-04-17 0.03 0.0004 < 0.03
2014 2014-04-17 0.03 0.0004 < 0.03
2014 2014-04-17 0.03 0.0004 < 0.03
2014 2014-04-17 0.03 0.0004 < 0.03
2014 2014-01-17 0.03 0.0004 < 0.03
2014 2014-01-17 0.03 0.0004 < 0.03
2013 2013-10-18 0.03 0.0004 < 0.03
2013 2013-10-18 0.03 0.0004 < 0.03
2013 2013-10-18 0.03 0.0004 < 0.03
2013 2013-10-18 0.03 0.0004 < 0.03
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.03 0 < 0.03
2014 2014-06-04 0.03 0 < 0.03
2014 2014-04-17 0.03 0 < 0.03
2014 2014-04-17 0.03 0 < 0.03
2014 2014-04-17 0.03 0 < 0.03
2014 2014-04-17 0.03 0 < 0.03
2014 2014-01-17 0.03 0 < 0.03
2014 2014-01-17 0.03 0 < 0.03
2013 2013-10-18 0.03 0 < 0.03
2013 2013-10-18 0.03 0 < 0.03
2013 2013-10-18 0.03 0 < 0.03
2013 2013-10-18 0.03 0 < 0.03
PFOS 0.04 0.07 0.0036 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-07-17 0.04 0.07 < 0.04
2014 2014-06-04 0.04 0.07 < 0.04
2014 2014-04-17 0.04 0.07 < 0.04
2014 2014-04-17 0.04 0.07 < 0.04
2014 2014-04-17 0.04 0.07 < 0.04
2014 2014-04-17 0.04 0.07 < 0.04
2014 2014-01-17 0.04 0.07 < 0.04
2014 2014-01-17 0.04 0.07 0.043
2013 2013-10-18 0.04 0.07 < 0.04
2013 2013-10-18 0.04 0.07 < 0.04
2013 2013-10-18 0.04 0.07 < 0.04
2013 2013-10-18 0.04 0.07 < 0.04

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
CA55804 lead 2014-01-01 2016-12-31 0mg/L
CA38761 lead 2011-01-01 2013-12-31 0mg/L
191009811093L lead 2011-01-01 2011-12-31 0.005mg/L
191009811192L lead 2011-01-01 2011-12-31 0.005mg/L
191009811242L lead 2011-01-01 2011-12-31 0.005mg/L
191009811249L lead 2011-01-01 2011-12-31 0.005mg/L
191009811254LT2 lead 2011-01-01 2011-12-31 0.003mg/L
191009811270LT3 lead 2011-01-01 2011-12-31 0.002mg/L
191009811271L lead 2011-01-01 2011-12-31 0.005mg/L
191009810257LT1 lead 2010-01-01 2010-12-31 0.005mg/L
191009810258LT4 lead 2010-01-01 2010-12-31 0.005mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
1988-09-01 - 1988-09-30 Miscellaneous Notification, Public - Known

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.