The Westchester County Private Well Water Testing Legislation , Local Law 7 of 2007, was duly adopted on May 23, 2007, and became effective Nov. 19, 2007.
Updated October 2011 - List of New York State Certified Laboratories registered with the Westchester County Department of Health to submit all required water test results and other required information. (pursuant to the Private Well Water Testing Law, Chapter 707 of the Laws of Westchester County).