New York City's Filtration Avoidance Determination (FAD)

New York City's Filtration Avoidance Determination (FAD)

Draft Revised 2017 FAD

The New York State Department of Health is considering revisions to some components of the 2017 FAD. The revisions were motivated, in part, by the recommendations of the National Academies of Science, Engineering, and Medicine Expert Panel that reviewed NYC’s watershed protection programs.

Public comments on the Draft Revised 2017 FAD will be accepted through June 3, 2022. Comments should be be submitted to: or mailed to:

Corning Tower Room 1198
Empire State Plaza
Albany, NY 12237

2017 Filtration Avoidance Determination (FAD)

Since 1993, New York City (“the City”) has met the requirements of the 1989 Surface Water Treatment Rule and, after 1998, the Interim Enhanced Surface Water Treatment Rule. This has allowed the City to avoid filtering its Catskill/Delaware water supply. The conditions that the City must meet to maintain filtration avoidance are described in the City’s Filtration Avoidance Determination (FAD). The current FAD was issued by the New York State Department of Health in December 2017.

2017 FAD Compliance Assessment

New York City’s 2017 FAD requires the New York State Department of Health, in consultation with the United States Environmental Protection Agency, conduct a review of the New York City’s implementation of their 2016 Long-Term Watershed Protection Plan and compliance with the requirements of the 2017 Filtration Avoidance Determination. This compliance assessment details the findings of NYSDOH.