Norwalk - City, Water Dept. 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: CA1910191
Type: Community water system
EPA Region: 09
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 12,794 		Contact Information
DICORPO, GARY
DICORPO, GARY
12700 Norwalk Blvd.
NORWALK, CA 90650
[email protected]

This public water system services 1 municipality in 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   (1) 2014   (0) 2015   (0) 2016   (0) 2017   (0) 2018   (0)
1,4-dioxane

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).

1,4-dioxane

Year Test Date MRLMinimum Reporting Level HRLHealth Risk Limit Test Result
2013 2013-10-29 0.07 0.35 < 0.07
2013 2013-10-29 0.07 0.35 < 0.07
2013 2013-10-29 0.07 0.35 < 0.07
2013 2013-07-29 0.07 0.35 2.1
2013 2013-07-29 0.07 0.35 2.1
2013 2013-07-29 0.07 0.35 < 0.07
2013 2013-07-29 0.07 0.35 < 0.07
2013 2013-07-29 0.07 0.35 < 0.07
2013 2013-07-29 0.07 0.35 < 0.07
2013 2013-06-03 0.07 0.35 < 0.07
2013 2013-06-03 0.07 0.35 < 0.07
2013 2013-04-30 0.07 0.35 < 0.07
2013 2013-04-30 0.07 0.35 < 0.07
2013 2013-04-30 0.07 0.35 < 0.07
2013 2013-01-31 0.07 0.35 3.3
2013 2013-01-31 0.07 0.35 1.8
2013 2013-01-31 0.07 0.35 < 0.07
2013 2013-01-31 0.07 0.35 < 0.07

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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
chlorate 20 210 71.7143 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 20 210 < 20
2013 2013-10-29 20 210 96
2013 2013-10-29 20 210 45
2013 2013-10-29 20 210 52
2013 2013-10-29 20 210 130
2013 2013-10-29 20 210 96
2013 2013-07-29 20 210 < 20
2013 2013-07-29 20 210 160
2013 2013-07-29 20 210 90
2013 2013-07-29 20 210 94
2013 2013-07-29 20 210 49
2013 2013-07-29 20 210 160
2013 2013-07-29 20 210 150
2013 2013-07-29 20 210 160
2013 2013-07-29 20 210 67
2013 2013-07-29 20 210 57
2013 2013-07-29 20 210 140
2013 2013-07-29 20 210 140
2013 2013-04-30 20 210 < 20
2013 2013-04-30 20 210 110
2013 2013-04-30 20 210 49
2013 2013-04-30 20 210 41
2013 2013-04-30 20 210 53
2013 2013-04-30 20 210 110
2013 2013-01-31 20 210 < 20
2013 2013-01-31 20 210 22
2013 2013-01-31 20 210 93
2013 2013-01-31 20 210 46
2013 2013-01-31 20 210 < 20
2013 2013-01-31 20 210 41
2013 2013-01-31 20 210 23
2013 2013-01-31 20 210 41
2013 2013-01-31 20 210 36
2013 2013-01-31 20 210 78
2013 2013-01-31 20 210 81
[+] Expand Test Data
chromium 0.2 100 0.4056 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.2 100 < 0.2
2013 2013-10-29 0.2 100 < 0.2
2013 2013-10-29 0.2 100 1
2013 2013-10-29 0.2 100 < 0.2
2013 2013-10-29 0.2 100 < 0.2
2013 2013-10-29 0.2 100 < 0.2
2013 2013-07-29 0.2 100 < 0.2
2013 2013-07-29 0.2 100 1.6
2013 2013-07-29 0.2 100 < 0.2
2013 2013-07-29 0.2 100 < 0.2
2013 2013-07-29 0.2 100 0.5
2013 2013-07-29 0.2 100 1.7
2013 2013-07-29 0.2 100 1.7
2013 2013-07-29 0.2 100 1.6
2013 2013-07-29 0.2 100 < 0.2
2013 2013-07-29 0.2 100 < 0.2
2013 2013-07-29 0.2 100 < 0.2
2013 2013-07-29 0.2 100 < 0.2
2013 2013-04-30 0.2 100 < 0.2
2013 2013-04-30 0.2 100 < 0.2
2013 2013-04-30 0.2 100 0.4
2013 2013-04-30 0.2 100 < 0.2
2013 2013-04-30 0.2 100 < 0.2
2013 2013-04-30 0.2 100 < 0.2
2013 2013-01-31 0.2 100 < 0.2
2013 2013-01-31 0.2 100 1.3
2013 2013-01-31 0.2 100 < 0.2
2013 2013-01-31 0.2 100 < 0.2
2013 2013-01-31 0.2 100 0.6
2013 2013-01-31 0.2 100 1.3
2013 2013-01-31 0.2 100 1.5
2013 2013-01-31 0.2 100 1.4
2013 2013-01-31 0.2 100 < 0.2
2013 2013-01-31 0.2 100 < 0.2
2013 2013-01-31 0.2 100 < 0.2
2013 2013-01-31 0.2 100 < 0.2
[+] Expand Test Data
chromium-6 0.03 0 0.4526 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.03 0 0.05
2013 2013-10-29 0.03 0 < 0.03
2013 2013-10-29 0.03 0 1.2
2013 2013-10-29 0.03 0 0.08
2013 2013-10-29 0.03 0 < 0.03
2013 2013-10-29 0.03 0 0.04
2013 2013-07-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 1.5
2013 2013-07-29 0.03 0 0.08
2013 2013-07-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 0.46
2013 2013-07-29 0.03 0 1.5
2013 2013-07-29 0.03 0 1.5
2013 2013-07-29 0.03 0 1.5
2013 2013-07-29 0.03 0 0.05
2013 2013-07-29 0.03 0 0.05
2013 2013-07-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 < 0.03
2013 2013-04-30 0.03 0 < 0.03
2013 2013-04-30 0.03 0 < 0.03
2013 2013-04-30 0.03 0 0.44
2013 2013-04-30 0.03 0 0.099
2013 2013-04-30 0.03 0 0.088
2013 2013-04-30 0.03 0 < 0.03
2013 2013-01-31 0.03 0 < 0.03
2013 2013-01-31 0.03 0 1.6
2013 2013-01-31 0.03 0 < 0.03
2013 2013-01-31 0.03 0 0.52
2013 2013-01-31 0.03 0 1.6
2013 2013-01-31 0.03 0 1.6
2013 2013-01-31 0.03 0 1.7
2013 2013-01-31 0.03 0 0.069
2013 2013-01-31 0.03 0 0.081
2013 2013-01-31 0.03 0 < 0.03
2013 2013-01-31 0.03 0 0.035
[+] Expand Test Data
cobalt 1 70 0.0667 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 1 70 < 1
2013 2013-10-29 1 70 < 1
2013 2013-10-29 1 70 1.2
2013 2013-10-29 1 70 < 1
2013 2013-10-29 1 70 < 1
2013 2013-10-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 1.2
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-07-29 1 70 < 1
2013 2013-04-30 1 70 < 1
2013 2013-04-30 1 70 < 1
2013 2013-04-30 1 70 < 1
2013 2013-04-30 1 70 < 1
2013 2013-04-30 1 70 < 1
2013 2013-04-30 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
2013 2013-01-31 1 70 < 1
[+] Expand Test Data
molybdenum 1 40 4.7361 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 1 40 5.4
2013 2013-10-29 1 40 4.1
2013 2013-10-29 1 40 2.4
2013 2013-10-29 1 40 4.1
2013 2013-10-29 1 40 4.2
2013 2013-10-29 1 40 4.2
2013 2013-07-29 1 40 19
2013 2013-07-29 1 40 2.1
2013 2013-07-29 1 40 4.5
2013 2013-07-29 1 40 4.3
2013 2013-07-29 1 40 3.4
2013 2013-07-29 1 40 2.3
2013 2013-07-29 1 40 2.3
2013 2013-07-29 1 40 2.3
2013 2013-07-29 1 40 4.3
2013 2013-07-29 1 40 4.5
2013 2013-07-29 1 40 4.4
2013 2013-07-29 1 40 4.4
2013 2013-04-30 1 40 22
2013 2013-04-30 1 40 4.2
2013 2013-04-30 1 40 3.4
2013 2013-04-30 1 40 4.5
2013 2013-04-30 1 40 4.3
2013 2013-04-30 1 40 4.1
2013 2013-01-31 1 40 9.7
2013 2013-01-31 1 40 2.1
2013 2013-01-31 1 40 4.3
2013 2013-01-31 1 40 4.3
2013 2013-01-31 1 40 3
2013 2013-01-31 1 40 2.1
2013 2013-01-31 1 40 2.7
2013 2013-01-31 1 40 2.2
2013 2013-01-31 1 40 3.6
2013 2013-01-31 1 40 3.5
2013 2013-01-31 1 40 4.2
2013 2013-01-31 1 40 4.1
[+] Expand Test Data
strontium 0.3 1500 645.2778 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.3 1500 540
2013 2013-10-29 0.3 1500 410
2013 2013-10-29 0.3 1500 660
2013 2013-10-29 0.3 1500 860
2013 2013-10-29 0.3 1500 430
2013 2013-10-29 0.3 1500 570
2013 2013-07-29 0.3 1500 610
2013 2013-07-29 0.3 1500 770
2013 2013-07-29 0.3 1500 710
2013 2013-07-29 0.3 1500 450
2013 2013-07-29 0.3 1500 760
2013 2013-07-29 0.3 1500 780
2013 2013-07-29 0.3 1500 780
2013 2013-07-29 0.3 1500 750
2013 2013-07-29 0.3 1500 830
2013 2013-07-29 0.3 1500 940
2013 2013-07-29 0.3 1500 470
2013 2013-07-29 0.3 1500 440
2013 2013-04-30 0.3 1500 620
2013 2013-04-30 0.3 1500 440
2013 2013-04-30 0.3 1500 760
2013 2013-04-30 0.3 1500 890
2013 2013-04-30 0.3 1500 770
2013 2013-04-30 0.3 1500 480
2013 2013-01-31 0.3 1500 570
2013 2013-01-31 0.3 1500 750
2013 2013-01-31 0.3 1500 440
2013 2013-01-31 0.3 1500 410
2013 2013-01-31 0.3 1500 700
2013 2013-01-31 0.3 1500 760
2013 2013-01-31 0.3 1500 780
2013 2013-01-31 0.3 1500 770
2013 2013-01-31 0.3 1500 670
2013 2013-01-31 0.3 1500 700
2013 2013-01-31 0.3 1500 450
2013 2013-01-31 0.3 1500 510
[+] Expand Test Data
vanadium 0.2 21 1.7056 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.2 21 1
2013 2013-10-29 0.2 21 0.3
2013 2013-10-29 0.2 21 3.3
2013 2013-10-29 0.2 21 2.8
2013 2013-10-29 0.2 21 1.1
2013 2013-10-29 0.2 21 0.9
2013 2013-07-29 0.2 21 1
2013 2013-07-29 0.2 21 3.1
2013 2013-07-29 0.2 21 1.2
2013 2013-07-29 0.2 21 0.8
2013 2013-07-29 0.2 21 3.2
2013 2013-07-29 0.2 21 3.2
2013 2013-07-29 0.2 21 3.2
2013 2013-07-29 0.2 21 3.1
2013 2013-07-29 0.2 21 1.8
2013 2013-07-29 0.2 21 2.8
2013 2013-07-29 0.2 21 0.3
2013 2013-07-29 0.2 21 0.9
2013 2013-04-30 0.2 21 0.8
2013 2013-04-30 0.2 21 0.4
2013 2013-04-30 0.2 21 2.9
2013 2013-04-30 0.2 21 2.8
2013 2013-04-30 0.2 21 1.5
2013 2013-04-30 0.2 21 0.6
2013 2013-01-31 0.2 21 0.8
2013 2013-01-31 0.2 21 2.4
2013 2013-01-31 0.2 21 < 0.2
2013 2013-01-31 0.2 21 < 0.2
2013 2013-01-31 0.2 21 2.6
2013 2013-01-31 0.2 21 2.4
2013 2013-01-31 0.2 21 2.8
2013 2013-01-31 0.2 21 2.8
2013 2013-01-31 0.2 21 1.1
2013 2013-01-31 0.2 21 2.2
2013 2013-01-31 0.2 21 0.5
2013 2013-01-31 0.2 21 0.8
[+] Expand Test Data
1,1-dichloroethane 0.03 6.14 0.0044 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.03 6.14 < 0.03
2013 2013-10-29 0.03 6.14 < 0.03
2013 2013-10-29 0.03 6.14 < 0.03
2013 2013-07-29 0.03 6.14 0.04
2013 2013-07-29 0.03 6.14 0.04
2013 2013-07-29 0.03 6.14 < 0.03
2013 2013-07-29 0.03 6.14 < 0.03
2013 2013-07-29 0.03 6.14 < 0.03
2013 2013-07-29 0.03 6.14 < 0.03
2013 2013-04-30 0.03 6.14 < 0.03
2013 2013-04-30 0.03 6.14 < 0.03
2013 2013-04-30 0.03 6.14 < 0.03
2013 2013-04-04 0.03 6.14 < 0.03
2013 2013-04-04 0.03 6.14 < 0.03
2013 2013-01-31 0.03 6.14 < 0.03
2013 2013-01-31 0.03 6.14 < 0.03
2013 2013-01-31 0.03 6.14 < 0.03
2013 2013-01-31 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
2013 2013-10-29 0.03 0.0004 < 0.03
2013 2013-10-29 0.03 0.0004 < 0.03
2013 2013-10-29 0.03 0.0004 < 0.03
2013 2013-07-29 0.03 0.0004 < 0.03
2013 2013-07-29 0.03 0.0004 < 0.03
2013 2013-07-29 0.03 0.0004 < 0.03
2013 2013-07-29 0.03 0.0004 < 0.03
2013 2013-07-29 0.03 0.0004 < 0.03
2013 2013-07-29 0.03 0.0004 < 0.03
2013 2013-04-30 0.03 0.0004 < 0.03
2013 2013-04-30 0.03 0.0004 < 0.03
2013 2013-04-30 0.03 0.0004 < 0.03
2013 2013-04-04 0.03 0.0004 < 0.03
2013 2013-04-04 0.03 0.0004 < 0.03
2013 2013-01-31 0.03 0.0004 < 0.03
2013 2013-01-31 0.03 0.0004 < 0.03
2013 2013-01-31 0.03 0.0004 < 0.03
2013 2013-01-31 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
2013 2013-10-29 0.1 0.0103 < 0.1
2013 2013-10-29 0.1 0.0103 < 0.1
2013 2013-10-29 0.1 0.0103 < 0.1
2013 2013-07-29 0.1 0.0103 < 0.1
2013 2013-07-29 0.1 0.0103 < 0.1
2013 2013-07-29 0.1 0.0103 < 0.1
2013 2013-07-29 0.1 0.0103 < 0.1
2013 2013-07-29 0.1 0.0103 < 0.1
2013 2013-07-29 0.1 0.0103 < 0.1
2013 2013-04-30 0.1 0.0103 < 0.1
2013 2013-04-30 0.1 0.0103 < 0.1
2013 2013-04-30 0.1 0.0103 < 0.1
2013 2013-04-04 0.1 0.0103 < 0.1
2013 2013-04-04 0.1 0.0103 < 0.1
2013 2013-01-31 0.1 0.0103 < 0.1
2013 2013-01-31 0.1 0.0103 < 0.1
2013 2013-01-31 0.1 0.0103 < 0.1
2013 2013-01-31 0.1 0.0103 < 0.1
[+] Expand Test Data
bromomethane 0.2 140 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.2 140 < 0.2
2013 2013-10-29 0.2 140 0.7
2013 2013-10-29 0.2 140 0.2
2013 2013-07-29 0.2 140 < 0.2
2013 2013-07-29 0.2 140 < 0.2
2013 2013-07-29 0.2 140 0.2
2013 2013-07-29 0.2 140 < 0.2
2013 2013-07-29 0.2 140 0.4
2013 2013-07-29 0.2 140 0.3
2013 2013-04-30 0.2 140 < 0.2
2013 2013-04-30 0.2 140 < 0.2
2013 2013-04-30 0.2 140 < 0.2
2013 2013-04-04 0.2 140 < 0.2
2013 2013-04-04 0.2 140 < 0.2
2013 2013-01-31 0.2 140 < 0.2
2013 2013-01-31 0.2 140 < 0.2
2013 2013-01-31 0.2 140 < 0.2
2013 2013-01-31 0.2 140 < 0.2
[+] Expand Test Data
chloromethane 0.2 2.69 0.0667 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.2 2.69 < 0.2
2013 2013-10-29 0.2 2.69 0.5
2013 2013-10-29 0.2 2.69 < 0.2
2013 2013-07-29 0.2 2.69 < 0.2
2013 2013-07-29 0.2 2.69 < 0.2
2013 2013-07-29 0.2 2.69 < 0.2
2013 2013-07-29 0.2 2.69 < 0.2
2013 2013-07-29 0.2 2.69 0.4
2013 2013-07-29 0.2 2.69 0.3
2013 2013-04-30 0.2 2.69 < 0.2
2013 2013-04-30 0.2 2.69 < 0.2
2013 2013-04-30 0.2 2.69 < 0.2
2013 2013-04-04 0.2 2.69 < 0.2
2013 2013-04-04 0.2 2.69 < 0.2
2013 2013-01-31 0.2 2.69 < 0.2
2013 2013-01-31 0.2 2.69 < 0.2
2013 2013-01-31 0.2 2.69 < 0.2
2013 2013-01-31 0.2 2.69 < 0.2
[+] Expand Test Data
Halon 1011 0.06 90 0.0098 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.06 90 < 0.06
2013 2013-10-29 0.06 90 < 0.06
2013 2013-10-29 0.06 90 < 0.06
2013 2013-07-29 0.06 90 < 0.06
2013 2013-07-29 0.06 90 < 0.06
2013 2013-07-29 0.06 90 < 0.06
2013 2013-07-29 0.06 90 < 0.06
2013 2013-07-29 0.06 90 < 0.06
2013 2013-07-29 0.06 90 < 0.06
2013 2013-04-30 0.06 90 < 0.06
2013 2013-04-30 0.06 90 < 0.06
2013 2013-04-30 0.06 90 0.076
2013 2013-04-04 0.06 90 < 0.06
2013 2013-04-04 0.06 90 < 0.06
2013 2013-01-31 0.06 90 < 0.06
2013 2013-01-31 0.06 90 < 0.06
2013 2013-01-31 0.06 90 < 0.06
2013 2013-01-31 0.06 90 0.1
[+] Expand Test Data
HCFC-22 0.08 0 0.0411 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.08 0 < 0.08
2013 2013-10-29 0.08 0 < 0.08
2013 2013-10-29 0.08 0 < 0.08
2013 2013-07-29 0.08 0 0.23
2013 2013-07-29 0.08 0 0.22
2013 2013-07-29 0.08 0 < 0.08
2013 2013-07-29 0.08 0 < 0.08
2013 2013-07-29 0.08 0 < 0.08
2013 2013-07-29 0.08 0 < 0.08
2013 2013-04-30 0.08 0 < 0.08
2013 2013-04-30 0.08 0 < 0.08
2013 2013-04-30 0.08 0 < 0.08
2013 2013-04-04 0.08 0 < 0.08
2013 2013-04-04 0.08 0 < 0.08
2013 2013-01-31 0.08 0 0.13
2013 2013-01-31 0.08 0 0.16
2013 2013-01-31 0.08 0 < 0.08
2013 2013-01-31 0.08 0 < 0.08
[+] Expand Test Data
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.09 0 < 0.09
2013 2013-10-29 0.09 0 < 0.09
2013 2013-10-29 0.09 0 < 0.09
2013 2013-07-29 0.09 0 < 0.09
2013 2013-07-29 0.09 0 < 0.09
2013 2013-07-29 0.09 0 < 0.09
2013 2013-07-29 0.09 0 < 0.09
2013 2013-07-29 0.09 0 < 0.09
2013 2013-07-29 0.09 0 < 0.09
2013 2013-06-03 0.09 0 < 0.09
2013 2013-04-30 0.09 0 < 0.09
2013 2013-04-04 0.09 0 < 0.09
2013 2013-04-04 0.09 0 < 0.09
2013 2013-03-18 0.09 0 < 0.09
2013 2013-03-18 0.09 0 < 0.09
2013 2013-03-18 0.09 0 < 0.09
2013 2013-03-18 0.09 0 < 0.09
[+] Expand Test Data
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.01 0 < 0.01
2013 2013-10-29 0.01 0 < 0.01
2013 2013-10-29 0.01 0 < 0.01
2013 2013-07-29 0.01 0 < 0.01
2013 2013-07-29 0.01 0 < 0.01
2013 2013-07-29 0.01 0 < 0.01
2013 2013-07-29 0.01 0 < 0.01
2013 2013-07-29 0.01 0 < 0.01
2013 2013-07-29 0.01 0 < 0.01
2013 2013-06-03 0.01 0 < 0.01
2013 2013-04-30 0.01 0 < 0.01
2013 2013-04-04 0.01 0 < 0.01
2013 2013-04-04 0.01 0 < 0.01
2013 2013-03-18 0.01 0 < 0.01
2013 2013-03-18 0.01 0 < 0.01
2013 2013-03-18 0.01 0 < 0.01
2013 2013-03-18 0.01 0 < 0.01
[+] Expand Test Data
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.03 0 < 0.03
2013 2013-10-29 0.03 0 < 0.03
2013 2013-10-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 < 0.03
2013 2013-07-29 0.03 0 < 0.03
2013 2013-06-03 0.03 0 < 0.03
2013 2013-04-30 0.03 0 < 0.03
2013 2013-04-04 0.03 0 < 0.03
2013 2013-04-04 0.03 0 < 0.03
2013 2013-03-18 0.03 0 < 0.03
2013 2013-03-18 0.03 0 < 0.03
2013 2013-03-18 0.03 0 < 0.03
2013 2013-03-18 0.03 0 < 0.03
[+] Expand Test Data
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-29 0.02 0 < 0.02
2013 2013-10-29 0.02 0 < 0.02
2013 2013-10-29 0.02 0 < 0.02
2013 2013-07-29 0.02 0 < 0.02
2013 2013-07-29 0.02 0 < 0.02
2013 2013-07-29 0.02 0 < 0.02
2013 2013-07-29 0.02 0 < 0.02
2013 2013-07-29 0.02 0 < 0.02
2013 2013-07-29 0.02 0 < 0.02
2013 2013-06-03 0.02 0 < 0.02
2013 2013-04-30 0.02 0 < 0.02
2013 2013-04-04 0.02 0 < 0.02
2013 2013-04-04 0.02 0 < 0.02
2013 2013-03-18 0.02 0 < 0.02
2013 2013-03-18 0.02 0 < 0.02
2013 2013-03-18 0.02 0 < 0.02
2013 2013-03-18 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
2013 2013-10-29 0.02 0.07 < 0.02
2013 2013-10-29 0.02 0.07 < 0.02
2013 2013-10-29 0.02 0.07 < 0.02
2013 2013-07-29 0.02 0.07 < 0.02
2013 2013-07-29 0.02 0.07 < 0.02
2013 2013-07-29 0.02 0.07 < 0.02
2013 2013-07-29 0.02 0.07 < 0.02
2013 2013-07-29 0.02 0.07 < 0.02
2013 2013-07-29 0.02 0.07 < 0.02
2013 2013-06-03 0.02 0.07 < 0.02
2013 2013-04-30 0.02 0.07 < 0.02
2013 2013-04-04 0.02 0.07 < 0.02
2013 2013-04-04 0.02 0.07 < 0.02
2013 2013-03-18 0.02 0.07 < 0.02
2013 2013-03-18 0.02 0.07 < 0.02
2013 2013-03-18 0.02 0.07 < 0.02
2013 2013-03-18 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
2013 2013-10-29 0.04 0.07 < 0.04
2013 2013-10-29 0.04 0.07 < 0.04
2013 2013-10-29 0.04 0.07 < 0.04
2013 2013-07-29 0.04 0.07 < 0.04
2013 2013-07-29 0.04 0.07 < 0.04
2013 2013-07-29 0.04 0.07 < 0.04
2013 2013-07-29 0.04 0.07 < 0.04
2013 2013-07-29 0.04 0.07 < 0.04
2013 2013-07-29 0.04 0.07 < 0.04
2013 2013-06-03 0.04 0.07 < 0.04
2013 2013-04-30 0.04 0.07 < 0.04
2013 2013-04-04 0.04 0.07 < 0.04
2013 2013-04-04 0.04 0.07 < 0.04
2013 2013-03-18 0.04 0.07 < 0.04
2013 2013-03-18 0.04 0.07 < 0.04
2013 2013-03-18 0.04 0.07 < 0.04
2013 2013-03-18 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 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
CA65415 lead 2017-01-01 2019-12-31 0mg/L
CA55809 lead 2014-01-01 2016-12-31 0mg/L
CA38756 lead 2013-01-01 2013-12-31 0mg/L
191019112332L lead 2012-01-01 2012-12-31 0.005mg/L
CA38752 lead 2010-01-01 2012-12-31 0mg/L
191019109323LT3 lead 2009-01-01 2009-12-31 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
- N/A Volatile Organic Chemicals Maximum Contaminant Level Violation, Average 1,2-Dichloroethane 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
SGS Forensic Laboratories Carson, CA 90746
Food Microbiological Laboratories, Inc. Cypress, CA 90630

Water Bill Information

Convenient information about your water service.

Unable to identify any billing information about Norwalk - City, Water Dept. (CA1910191).

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.