I can think of few things more disgusting than using the water collected in the subway for anything other than chemical weaponry. However, it seems that the MTA may be looking into that as part of the sustainability plan.
For example, MTA plans to power a “significant portion” of the Roosevelt Island Subway Station with renewable tidal energy generated in the East River; add a high-performance roof at MTA Metro-North Railroad’s Harmon Yard Shop, and a white roof at the MTA Long Island Rail Road Hillsdale facility; offer incentive packages from various state agencies to encourage development at or near MTA stations; and evaluate ways MTA New York City Transit can use water harvested from the subway system. [Progressive Railroading]
I’m all for sustainability, energy conservation, and saving the environment. HOWEVER, what possible good can come from doing anything with the subway water “harvested” from the system? Gross!