New York City began drawing water from the Croton River watershed

The New York State Legislature passed an act allowing New York City to acquire lands and build dams, reservoirs, and aqueducts in the Catskills

Ashokan Reservoir constructed, 2,000 residents displaced
Communities of Shokan, Broadhead Bridge, Brown’s Station, Oliver Bridge, West Hurley, Glenford, Olive and Ashton were eliminated.

Schoharie Reservoir constructed, 350 residents displaced
Community of Gilboa and neighboring valley lands flooded.

Rondout Reservoir constructed
Communities of Eureka, Montela, and Lackawack were eliminated.

Communities of Neversink and Bittersweet were eliminated.
Neversink Reservoir constructed
Construction was virtually shut down during World War II, but resumed in 1946.
1,500 people were forced to vacate their homes, farms, and businesses in. the Rondout and Neversink Valleys
Pepacton Reservoir constructed
974 people displaced.
Communities of Arena, Pepacton, Shavertown and Union Grove were eliminated.
New York City acquired 13,000 acres, including cemeteries from which 2,371 bodies were removed to be re-interred elsewhere.

Cannonsville Reservoir constructed, 941 people displaced.
Communities of Beerston, Cannonsville, Rock Rift, Rock Royal and Granton were eliminated.

The Federal Clean Water Act calls for setting water quality standards and providing technical tools and financial assistance to address the causes of poor water quality.

Federal Safe Drinking Water Act Amendments are signed into law.

U.S. Environmental Protection Agency’s Surface Water Treatment Rule requires filtration of all surface water supplies to protect against microbial contamination of drinking water. This requirement can be waived if a water system’s treatment processes and natural conditions provide safe water and if the watershed is actively protected to ensure water safety in the future.

New York City Department of Environmental Protection releases draft Watershed Protection Plan in September 1990.

Coalition of Watershed Towns forms to fight against NYC watershed regulations in March 1991.

Governor Pataki assigns his Counsel to mediate settlement negotiations in April 1995. A conceptual agreement is reached in November 1995, and work begins on a formal draft of the Memorandum of Agreement.

The Memorandum of Agreement is formally executed (January 21, 1997).
Signatories include the United States Environmental Protection Agency, New York State, New York City, watershed towns, villages, and counties, and environmental groups. New York City agrees to provide over $270 million in funding for programs geared toward infrastructure, education, and economic development programs to protect water quality and improve quality of life in the Watershed. A new not-for-profit corporation, the Catskill Watershed Corporation, is formed to manage many of the programs in the Catskill/Delaware Watershed.

The Environmental Protection Agency issues a Five Year Filtration Avoidance Determination (FAD), exempting New York City from federal requirements to filter the Catskill/Delaware system.

A comprehensive review of the City’s implementation of its Long-Term
Watershed Protection Program, including implementation and enforcement of the Watershed Rules and Regulations, is completed in July 2006.

The EPA grants a Ten Year Filtration Avoidance Determination (FAD) exempting New York City from federal requirements to filter the Catskill/Delaware system.

The 2007 FAD has just undergone a five-year review. Revisions have been drafted and comments from involved parties are being considered by the New York State Department of Health, which now has the lead agency status (instead of the EPA.)