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Water Quality Reports

If you have any questions about these reports or your drinking water, please contact us at (516) 327-4100.

One of our critical missions at the Water Authority of Western Nassau County is to keep our customers well informed as to issues facing the water industry. In this regard we are pleased to provide you with our Annual Water Quality Reports.

These reports are in compliance with New York State Public Health Law and Federal regulations. The information included presents laboratory results for all testing concerning the quality of your drinking water which was performed during each calendar year.

These reports provide useful information and statistics with regard to water system information, sources of water and water treatment, definitions of terms used, lists of detected and non-detected compounds and other proactive approaches adopted by the Water Authority such as water conservation measures.

Select the links below for Water Quality Reports for the following calendar years.

You will need the free Adobe Acrobat Reader to view some of these reports. Click the icon below to download it.

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  Web Link Hits
  Link   Annual Water Quality Report 2024
*Correction* See the end of the 2024 Annual Water Quality Report for a correction to Footnote 9 for the Table of Detected Contaminants.
1138
  Link   Annual Water Quality Report 2023
1184
  Link   Annual Water Quality Report 2022
2988
  Link   Annual Water Quality Report 2021
1835
  Link   Annual Water Quality Report 2020
2022
  Link   Annual Water Quality Report 2019
1847
  Link   Annual Water Quality Report 2018
2777
  Link   Annual Water Quality Report 2017
1906
  Link   Annual Water Quality Report 2016
2094
  Link   Annual Water Quality Report 2015
2363
  Link   Annual Water Quality Report 2014
2587
  Link   Annual Water Quality Report 2013
2553
  Link   Annual Water Quality Report 2012
3960
  Link   Annual Water Quality Report 2011
2674
  Link   Annual Water Quality Report 2010
2876
  Link   Annual Water Quality Report 2009
2876
  Link   Annual Water Quality Report 2008
2790
  Link   Annual Water Quality Report 2007
378
  Link   Annual Water Quality Report 2006
280
  Link   Annual Water Quality Report 2005
227
  Link   Annual Water Quality Report 2004
358
  Link   Annual Water Quality Report 2003
201
  Link   Annual Water Quality Report 2002
470
 

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1580 Union Turnpike, New Hyde Park, NY 11040-1762
Phone: (516) 327-4100 | Fax: (516) 327-4132
Public Water Supply Identification No. NY2902830
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