Current Events

Next Board of Directors Meeting


Monday, October 19th, 2026

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.

Get Adobe Acrobat Reader

 

  Web Link Hits
  Link   Annual Water Quality Report 2025
357
  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.
2463
  Link   Annual Water Quality Report 2023
1550
  Link   Annual Water Quality Report 2022
4093
  Link   Annual Water Quality Report 2021
2365
  Link   Annual Water Quality Report 2020
2263
  Link   Annual Water Quality Report 2019
2078
  Link   Annual Water Quality Report 2018
3081
  Link   Annual Water Quality Report 2017
2139
  Link   Annual Water Quality Report 2016
2322
  Link   Annual Water Quality Report 2015
2595
  Link   Annual Water Quality Report 2014
2916
  Link   Annual Water Quality Report 2013
2819
  Link   Annual Water Quality Report 2012
4218
  Link   Annual Water Quality Report 2011
2984
  Link   Annual Water Quality Report 2010
3139
  Link   Annual Water Quality Report 2009
3138
  Link   Annual Water Quality Report 2008
2995
  Link   Annual Water Quality Report 2007
434
  Link   Annual Water Quality Report 2006
299
  Link   Annual Water Quality Report 2005
230
  Link   Annual Water Quality Report 2004
362
  Link   Annual Water Quality Report 2003
205
  Link   Annual Water Quality Report 2002
489
 

Looking for something else?

If you are looking for some other document or information that is not available here, send us a note and we'll do our best to help you find it.

Click Here to contact us. 

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