 This water, which is free of organic contaminants but still contains excess mineral content, is naturally purified by the plants and algae in the wetlands, then released into the surface water supply.Over 150 species of birds have been spotted inside the park, including pied-billed grebe, snowy egrets, and black-bellied whistling ducks.The park is also home to turtles, alligators, rabbits, frogs, and raccoons.