“The really good thing about it is that it works,” says Darrel Andrews, assistant director of the Environmental Division of the Tarrant Regional Water District in Fort Worth, Texas.He means the nearly 2,100-acre man-made wetland that filters drinking water for 1.8 million customers in the Dallas-Fort Worth metroplex. Through a partnership with the Texas Parks and Wildlife Department that began in 1997, the wetland was built on the north unit of the wildlife department’s Richland Creek Wildlife Management Area, about 80 miles southeast of Dallas between the Richland-Chambers Reservoir and the Trinity River.Each day, up to 90 mgd (permitted) of
