The Incorporated Village of Hempstead
Mayor Wayne J. Hall, Sr.
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Mayor Wayne J. Hall, Sr.

Frequently Asked Questions

Building Department

  • What is a backflow device and why do I need one?

  • A backflow devise is a valve installed on your water line to prevent contaminated water from backing into the public water system. This is a New York State Law that must be enforced by the local municipalities and must be inspected and tested annually.

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