Public Water System: Westchester Joint Water Works

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: NY5903435
Type: Community water system
EPA Region: 02
Primary Service Area: Municipality
Primary Source: Surface water
Population Served: 59,629
Contact Information
ROSENBLUM, NORMAN S.
ROSENBLUM, NORMAN S.
Village of Mamaroneck
MAMARONECK, NY 10543

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).

We couldn't find any records of contaminants exceeding the regulated limits in your water.

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.

We couldn't find any records of contaminants in your water.

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
NY126877 lead 2017-01-01 2017-12-31 0.0039mg/L
NY117823 lead 2016-01-01 2016-12-31 0.0044mg/L
NY109747 lead 2015-01-01 2015-12-31 0.0025mg/L
NY104959 lead 2014-01-01 2014-12-31 0.0028mg/L
NY99828 lead 2013-01-01 2013-12-31 0.0027mg/L
NY88626 lead 2013-01-01 2013-12-31 0.005mg/L
NY104961 lead 2012-01-01 2012-12-31 0.005mg/L
NY79284 lead 2011-01-01 2011-12-31 0.0033mg/L
70255 lead 2010-07-01 2010-12-31 0.0049mg/L
NY63724 lead 2010-01-01 2010-06-30 0.0088mg/L
NY60322 lead 2009-07-01 2009-12-31 0.0169mg/L
NY55782 lead 2008-07-01 2008-12-31 0.0071mg/L
NY56245 lead 2008-01-01 2008-06-30 0.0061mg/L

Violations


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

Compliance Dates Rule Violation Type Contaminant Name Status
2009-01-01 - 2009-06-30 Lead and Copper Rule Water Quality Parameter M/R Lead and Copper Rule Returned to Compliance
2005-04-01 - 2005-06-30 Stage 1 Disinfectants and Disinfection Byproducts Rule Monitoring and Reporting (DBP) Total Haloacetic Acids (HAA5) Returned to Compliance
1993-01-01 - 1993-12-31 Nitrates Monitoring, Regular Nitrate Known
1993-06-30 - N/A Surface Water Treatment Rule Failure to Filter (SWTR) Surface Water Treatment Rule Open
2007-10-01 - N/A Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Lead and Copper Rule Returned to Compliance
2009-01-01 - N/A Lead and Copper Rule Initial, Follow-up, or Routine Source Water M/R 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.