Public Water System: Chelsea Water Dept. (mwra)

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: MA3057000
Type: Community water system
EPA Region: 01
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 35,177
Contact Information
CHELSEA WATER DEPT. (MWRA)
BERT TAVERNA
500 BROADWAY
CHELSEA, MA 02150

This public water system services 1 zip code in 1 municipality 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
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Year Test Date MRL HRL Test Result
2013 2013-10-21 20 210 142
2013 2013-10-21 20 210 144
2013 2013-07-18 20 210 286
2013 2013-07-18 20 210 259
2013 2013-04-10 20 210 73.8
2013 2013-04-10 20 210 73.6
2013 2013-01-23 20 210 49.9
2013 2013-01-23 20 210 48

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
PFHxS 0.03 0 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.03 0 < 0.03
2013 2013-07-18 0.03 0 < 0.03
2013 2013-04-10 0.03 0 < 0.03
2013 2013-01-23 0.03 0 < 0.03
PFHpA 0.01 0 < 0.01 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.01 0 < 0.01
2013 2013-07-18 0.01 0 < 0.01
2013 2013-04-10 0.01 0 < 0.01
2013 2013-01-23 0.01 0 < 0.01
PFBS 0.09 0 < 0.09 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.09 0 < 0.09
2013 2013-07-18 0.09 0 < 0.09
2013 2013-04-10 0.09 0 < 0.09
2013 2013-01-23 0.09 0 < 0.09
PFOA 0.02 0.07 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.02 0.07 < 0.02
2013 2013-07-18 0.02 0.07 < 0.02
2013 2013-04-10 0.02 0.07 < 0.02
2013 2013-01-23 0.02 0.07 < 0.02
PFOS 0.04 0.07 < 0.04 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.04 0.07 < 0.04
2013 2013-07-18 0.04 0.07 < 0.04
2013 2013-04-10 0.04 0.07 < 0.04
2013 2013-01-23 0.04 0.07 < 0.04
1,4-dioxane 0.07 0.35 < 0.07 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.07 0.35 < 0.07
2013 2013-07-18 0.07 0.35 < 0.07
2013 2013-04-10 0.07 0.35 < 0.07
2013 2013-01-23 0.07 0.35 < 0.07
PFNA 0.02 0 < 0.02 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.02 0 < 0.02
2013 2013-07-18 0.02 0 < 0.02
2013 2013-04-10 0.02 0 < 0.02
2013 2013-01-23 0.02 0 < 0.02
vanadium 0.2 21 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.2 21 < 0.2
2013 2013-10-21 0.2 21 < 0.2
2013 2013-07-18 0.2 21 < 0.2
2013 2013-07-18 0.2 21 < 0.2
2013 2013-04-10 0.2 21 < 0.2
2013 2013-04-10 0.2 21 < 0.2
2013 2013-01-23 0.2 21 < 0.2
2013 2013-01-23 0.2 21 < 0.2
chromium-6 0.03 0 0.0195 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.03 0 0.03
2013 2013-10-21 0.03 0 0.034
2013 2013-07-18 0.03 0 0.047
2013 2013-07-18 0.03 0 0.045
2013 2013-04-10 0.03 0 < 0.03
2013 2013-04-10 0.03 0 < 0.03
2013 2013-01-23 0.03 0 < 0.03
2013 2013-01-23 0.03 0 < 0.03
bromomethane 0.2 140 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.2 140 < 0.2
2013 2013-07-18 0.2 140 < 0.2
2013 2013-04-10 0.2 140 < 0.2
2013 2013-01-23 0.2 140 < 0.2
chromium 0.2 100 0.0863 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.2 100 0.22
2013 2013-10-21 0.2 100 0.26
2013 2013-07-18 0.2 100 < 0.2
2013 2013-07-18 0.2 100 < 0.2
2013 2013-04-10 0.2 100 < 0.2
2013 2013-04-10 0.2 100 < 0.2
2013 2013-01-23 0.2 100 0.21
2013 2013-01-23 0.2 100 < 0.2
cobalt 1 70 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 1 70 < 1
2013 2013-10-21 1 70 < 1
2013 2013-07-18 1 70 < 1
2013 2013-07-18 1 70 < 1
2013 2013-04-10 1 70 < 1
2013 2013-04-10 1 70 < 1
2013 2013-01-23 1 70 < 1
2013 2013-01-23 1 70 < 1
strontium 0.3 1500 34.1625 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.3 1500 34.7
2013 2013-10-21 0.3 1500 35.3
2013 2013-07-18 0.3 1500 39.6
2013 2013-07-18 0.3 1500 38.9
2013 2013-04-10 0.3 1500 34.8
2013 2013-04-10 0.3 1500 33.7
2013 2013-01-23 0.3 1500 28.1
2013 2013-01-23 0.3 1500 28.2
molybdenum 1 40 < 1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 1 40 < 1
2013 2013-10-21 1 40 < 1
2013 2013-07-18 1 40 < 1
2013 2013-07-18 1 40 < 1
2013 2013-04-10 1 40 < 1
2013 2013-04-10 1 40 < 1
2013 2013-01-23 1 40 < 1
2013 2013-01-23 1 40 < 1
HCFC-22 0.08 0 < 0.08 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.08 0 < 0.08
2013 2013-07-18 0.08 0 < 0.08
2013 2013-04-10 0.08 0 < 0.08
2013 2013-01-23 0.08 0 < 0.08
1,3-butadiene 0.1 0.0103 < 0.1 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.1 0.0103 < 0.1
2013 2013-07-18 0.1 0.0103 < 0.1
2013 2013-04-10 0.1 0.0103 < 0.1
2013 2013-01-23 0.1 0.0103 < 0.1
Halon 1011 0.06 90 < 0.06 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.06 90 < 0.06
2013 2013-07-18 0.06 90 < 0.06
2013 2013-04-10 0.06 90 < 0.06
2013 2013-01-23 0.06 90 < 0.06
1,2,3-trichloropropane 0.03 0.0004 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.03 0.0004 < 0.03
2013 2013-07-18 0.03 0.0004 < 0.03
2013 2013-04-10 0.03 0.0004 < 0.03
2013 2013-01-23 0.03 0.0004 < 0.03
chloromethane 0.2 2.69 < 0.2 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.2 2.69 < 0.2
2013 2013-07-18 0.2 2.69 < 0.2
2013 2013-04-10 0.2 2.69 < 0.2
2013 2013-01-23 0.2 2.69 < 0.2
1,1-dichloroethane 0.03 6.14 < 0.03 [+] Expand Test Data
Year Test Date MRL HRL Test Result
2013 2013-10-21 0.03 6.14 < 0.03
2013 2013-07-18 0.03 6.14 < 0.03
2013 2013-04-10 0.03 6.14 < 0.03
2013 2013-01-23 0.03 6.14 < 0.03

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
57 lead 2017-01-01 2017-12-31 0.00558mg/L
56 lead 2016-01-01 2016-12-31 0.00393mg/L
54 lead 2015-01-01 2015-12-31 0.0116mg/L
52 lead 2014-07-01 2014-12-31 0.00549mg/L
55 lead 2014-01-01 2014-06-30 0.0037mg/L
53 lead 2014-01-01 2014-06-30 0.0037mg/L
51 lead 2014-01-01 2014-06-30 0.0037mg/L
50 lead 2013-01-01 2013-12-31 0.0265mg/L
49 lead 2012-01-01 2012-12-31 0.0109mg/L
37 lead 2011-07-01 2011-12-31 0.00918mg/L
36 lead 2011-01-01 2011-06-30 0.00314mg/L
35 lead 2010-07-01 2010-12-31 0.00506mg/L
34 lead 2010-01-01 2010-06-30 0.00404mg/L
33 lead 2009-07-01 2009-12-31 0.0186mg/L
29 lead 2009-01-01 2009-06-30 0.00402mg/L
32 lead 2008-07-01 2008-12-31 0.00633mg/L
31 lead 2008-01-01 2008-06-30 0.00371mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
1992-01-01 - 2000-05-05 Surface Water Treatment Rule Failure to Filter (SWTR) Surface Water Treatment Rule Known
1996-07-01 - 1996-07-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
1995-11-01 - 1995-11-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
1995-10-01 - 1995-10-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
1995-09-01 - 1995-09-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
1995-08-01 - 1995-08-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
1995-07-01 - 1995-07-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
1995-06-01 - 1995-06-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
1995-05-01 - 1995-05-31 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
1991-04-01 - 1991-04-30 Total Coliform Rule Maximum Contaminant Level Violation, Monthly (TCR) Coliform (TCR) Known
2010-01-01 - N/A Lead and Copper Rule Lead Service Line Replacement (LSLR) Lead and Copper Rule Returned to Compliance
2016-07-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance
1993-01-01 - N/A Lead and Copper Rule Public Education Lead and Copper Rule Returned to Compliance
1999-01-01 - N/A Lead and Copper Rule Public Education Lead and Copper Rule Returned to Compliance
1992-01-01 - N/A Lead and Copper Rule Public Education Lead and Copper Rule Returned to Compliance
2007-01-01 - N/A Lead and Copper Rule Lead Service Line Replacement (LSLR) Lead and Copper Rule Returned to Compliance
1997-01-01 - N/A Lead and Copper Rule Public Education Lead and Copper Rule Returned to Compliance
1994-01-01 - N/A Lead and Copper Rule Public Education Lead and Copper 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.