Man-made wetlands turn wastewater into tap water

In this photo Wednesday, July 9, 2014, Chris Zachry, wetlands project manager for the Tarrant Regional Water District, watches clean water from a man made wetland project flow into the Richland Chambers Reservoir near Fairfield, Texas. As slow-moving, turbid water snakes through a man-made wetland, phosphorous and nitrates are slowly filtered out through shallow ponds full of lush vegetation and water birds until, a week later, the water runs clear as a creek directly into a North Texas drinking supply. (AP Photo/LM Otero)FAIRFIELD, Texas (AP) — As murky water snakes through a man-made wetland between Dallas and Houston, its shallow ponds of lush vegetation slowly filter out phosphorous and nitrates until, a week later, the water runs clear as a creek into the area drinking supply.