The bathrooms at the Urban Ecology Center’s Riverside Park branch may not look like anything special but they are truly unique! The bathrooms are constructed out of reclaimed and recyclable materials to further minimize the impact on the planet. All of the toilets are flushed with rain water. Three 350-gallon cisterns store water that falls onto the roof of the building and sends it to a pumping system that flush the toilets. Kohler donated waterless urinals, which save 90,000 gallons of water per year on average.