The Fay Sinkin Collection contains records relating to the activities of the Aquifer Protection Association (APA) during the 1970’s. Formed in 1974 by Fay Sinkin at the request of the San Antonio League of Women Voters, the APA drew public attention to the aquifer and developed support for the purchase of sensitive areas in the aquifer recharge zone. The APA was instrumental in promoting both short and long range policies and planning, particularly in regard to zoning, that focused on aquifer protection as the City of San Antonio rapidly grew northward.