Filtration Avoidance Determination

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Document Portal

Drinking Water Supply & Quality Report

Newsletters

Filtration Avoidance Determination

Environmental Reviews

Language Access

Disability Access


Filtration Avoidance Determination

The Catskill/Delaware portion of New York City’s water supply has met the criteria for waivers from the filtration requirements of Surface Water Treatment (SWTR) from January 1993 to the present. The United States Environmental Protection Agency granted the Filtration Avoidance Determinations (FAD) in January 1993, December 1993, January 1997, May 1997, November 2002 and July 2007. In 2014, the New York State Department of Health granted the Revised 2007 FAD and issue the 2017 FAD on December 28, 2017.

These documents report on the development, progress and achievements of our source water protection programs that maintain the FAD for the Catskill/Delaware portion of New York City’s water supply. For archived documents, visit the Document Portal and search for “FAD.”

Key Documents

Download the Annual Filtration Avoidance Determination Report

Download the Watershed Water Quality Annual Report

Download the Revised 2017 Filtration Avoidance Determination

Download the 2021 Long-Term Watershed Protection Program Plan

Download the Watershed Protection Program Summary and Assessment

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