Public Water System: Norwalk First Taxing District

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: CT1030011
Type: Community water system
EPA Region: 01
Primary Service Area: Residential Area
Primary Source: Surface water
Population Served: 40,256
Contact Information
DI GANGI, P.E., DOMINICK M.
DI GANGI, P.E., DOMINICK M.
12 NEW CANAAN AVENUE
P.O. Box 27
NORWALK, CT 06851

This public water system services 8 zip codes in 4 municipalities 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   (1) 2014   (0) 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 2014-04-22 20 210 72
2014 2014-04-22 20 210 93
2014 2014-01-27 20 210 97
2014 2014-01-27 20 210 77
2014 2014-01-27 20 210 29
2013 2013-10-21 20 210 98
2013 2013-10-21 20 210 130
2013 2013-07-16 20 210 180
2013 2013-07-16 20 210 240
2013 2013-07-16 20 210 290

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 2014-04-22 0.08 0 < 0.08
2014 2014-01-27 0.08 0 < 0.08
2014 2014-01-27 0.08 0 < 0.08
2013 2013-10-21 0.08 0 < 0.08
2013 2013-07-16 0.08 0 < 0.08
2013 2013-07-16 0.08 0 < 0.08
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.1 0.0103 < 0.1
2014 2014-01-27 0.1 0.0103 < 0.1
2014 2014-01-27 0.1 0.0103 < 0.1
2013 2013-10-21 0.1 0.0103 < 0.1
2013 2013-07-16 0.1 0.0103 < 0.1
2013 2013-07-16 0.1 0.0103 < 0.1
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.06 90 < 0.06
2014 2014-01-27 0.06 90 < 0.06
2014 2014-01-27 0.06 90 < 0.06
2013 2013-10-21 0.06 90 < 0.06
2013 2013-07-16 0.06 90 < 0.06
2013 2013-07-16 0.06 90 < 0.06
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.2 140 < 0.2
2014 2014-01-27 0.2 140 < 0.2
2014 2014-01-27 0.2 140 < 0.2
2013 2013-10-21 0.2 140 < 0.2
2013 2013-07-16 0.2 140 < 0.2
2013 2013-07-16 0.2 140 < 0.2
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.03 6.14 < 0.03
2014 2014-01-27 0.03 6.14 < 0.03
2014 2014-01-27 0.03 6.14 < 0.03
2013 2013-10-21 0.03 6.14 < 0.03
2013 2013-07-16 0.03 6.14 < 0.03
2013 2013-07-16 0.03 6.14 < 0.03
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.02 0.07 < 0.02
2014 2014-01-27 0.02 0.07 < 0.02
2014 2014-01-27 0.02 0.07 < 0.02
2013 2013-10-21 0.02 0.07 < 0.02
2013 2013-07-16 0.02 0.07 < 0.02
2013 2013-07-16 0.02 0.07 < 0.02
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.2 2.69 < 0.2
2014 2014-01-27 0.2 2.69 < 0.2
2014 2014-01-27 0.2 2.69 < 0.2
2013 2013-10-21 0.2 2.69 < 0.2
2013 2013-07-16 0.2 2.69 < 0.2
2013 2013-07-16 0.2 2.69 < 0.2
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.09 0 < 0.09
2014 2014-01-27 0.09 0 < 0.09
2014 2014-01-27 0.09 0 < 0.09
2013 2013-10-21 0.09 0 < 0.09
2013 2013-07-16 0.09 0 < 0.09
2013 2013-07-16 0.09 0 < 0.09
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.03 0.0004 < 0.03
2014 2014-01-27 0.03 0.0004 < 0.03
2014 2014-01-27 0.03 0.0004 < 0.03
2013 2013-10-21 0.03 0.0004 < 0.03
2013 2013-07-16 0.03 0.0004 < 0.03
2013 2013-07-16 0.03 0.0004 < 0.03
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.04 0.07 < 0.04
2014 2014-01-27 0.04 0.07 < 0.04
2014 2014-01-27 0.04 0.07 < 0.04
2013 2013-10-21 0.04 0.07 < 0.04
2013 2013-07-16 0.04 0.07 < 0.04
2013 2013-07-16 0.04 0.07 < 0.04
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.02 0 < 0.02
2014 2014-01-27 0.02 0 < 0.02
2014 2014-01-27 0.02 0 < 0.02
2013 2013-10-21 0.02 0 < 0.02
2013 2013-07-16 0.02 0 < 0.02
2013 2013-07-16 0.02 0 < 0.02
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.03 0 < 0.03
2014 2014-01-27 0.03 0 < 0.03
2014 2014-01-27 0.03 0 < 0.03
2013 2013-10-21 0.03 0 < 0.03
2013 2013-07-16 0.03 0 < 0.03
2013 2013-07-16 0.03 0 < 0.03
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 1 40 < 1
2014 2014-04-22 1 40 < 1
2014 2014-01-27 1 40 < 1
2014 2014-01-27 1 40 < 1
2014 2014-01-27 1 40 < 1
2013 2013-10-21 1 40 < 1
2013 2013-10-21 1 40 < 1
2013 2013-07-16 1 40 < 1
2013 2013-07-16 1 40 < 1
2013 2013-07-16 1 40 < 1
vanadium 0.2 21 0.026 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.2 21 < 0.2
2014 2014-04-22 0.2 21 < 0.2
2014 2014-01-27 0.2 21 < 0.2
2014 2014-01-27 0.2 21 < 0.2
2014 2014-01-27 0.2 21 < 0.2
2013 2013-10-21 0.2 21 < 0.2
2013 2013-10-21 0.2 21 < 0.2
2013 2013-07-16 0.2 21 < 0.2
2013 2013-07-16 0.2 21 < 0.2
2013 2013-07-16 0.2 21 0.26
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.01 0 < 0.01
2014 2014-01-27 0.01 0 < 0.01
2014 2014-01-27 0.01 0 < 0.01
2013 2013-10-21 0.01 0 < 0.01
2013 2013-07-16 0.01 0 < 0.01
2013 2013-07-16 0.01 0 < 0.01
strontium 0.3 1500 72.4 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.3 1500 48
2014 2014-04-22 0.3 1500 60
2014 2014-01-27 0.3 1500 140
2014 2014-01-27 0.3 1500 57
2014 2014-01-27 0.3 1500 53
2013 2013-10-21 0.3 1500 49
2013 2013-10-21 0.3 1500 58
2013 2013-07-16 0.3 1500 49
2013 2013-07-16 0.3 1500 70
2013 2013-07-16 0.3 1500 140
chromium-6 0.03 0 0.0216 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.03 0 0.031
2014 2014-04-22 0.03 0 0.033
2014 2014-02-18 0.03 0 < 0.03
2014 2014-01-27 0.03 0 < 0.03
2014 2014-01-27 0.03 0 < 0.03
2013 2013-10-21 0.03 0 0.034
2013 2013-10-21 0.03 0 0.037
2013 2013-07-29 0.03 0 0.038
2013 2013-07-16 0.03 0 0.043
2013 2013-07-16 0.03 0 < 0.03
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 1 70 < 1
2014 2014-04-22 1 70 < 1
2014 2014-01-27 1 70 < 1
2014 2014-01-27 1 70 < 1
2014 2014-01-27 1 70 < 1
2013 2013-10-21 1 70 < 1
2013 2013-10-21 1 70 < 1
2013 2013-07-16 1 70 < 1
2013 2013-07-16 1 70 < 1
2013 2013-07-16 1 70 < 1
chromium 0.2 100 0.022 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.2 100 < 0.2
2014 2014-04-22 0.2 100 < 0.2
2014 2014-01-27 0.2 100 < 0.2
2014 2014-01-27 0.2 100 < 0.2
2014 2014-01-27 0.2 100 < 0.2
2013 2013-10-21 0.2 100 < 0.2
2013 2013-10-21 0.2 100 < 0.2
2013 2013-07-16 0.2 100 0.22
2013 2013-07-16 0.2 100 < 0.2
2013 2013-07-16 0.2 100 < 0.2
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2014 2014-04-22 0.07 0.35 < 0.07
2014 2014-01-27 0.07 0.35 < 0.07
2014 2014-01-27 0.07 0.35 < 0.07
2013 2013-10-21 0.07 0.35 < 0.07
2013 2013-07-16 0.07 0.35 < 0.07
2013 2013-07-16 0.07 0.35 < 0.07

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
CT31733 lead 2017-01-01 2017-12-31 0mg/L
CT31753 lead 2017-01-01 2017-06-30 0mg/L
CT30132 lead 2016-01-01 2016-12-31 0mg/L
CT28068 lead 2015-01-01 2015-12-31 0mg/L
CT26405 lead 2014-01-01 2014-12-31 0mg/L
CT26589 lead 2012-01-01 2014-12-31 0.004mg/L
CT24874 lead 2013-01-01 2013-12-31 0mg/L
CT23133 lead 2012-01-01 2012-12-31 0mg/L
CT21623 lead 2011-01-01 2011-12-31 0mg/L
CT22778 lead 2009-01-01 2011-12-31 0.001mg/L
CT20071 lead 2010-01-01 2010-12-31 0mg/L
CT19193 lead 2009-01-01 2009-12-31 0mg/L
CT19192 lead 2008-01-01 2008-12-31 0mg/L
CT16398 lead 2006-01-01 2008-12-31 0.012mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2008-07-01 - N/A Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Consumer Confidence Rule 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.