A Washoe District Court judge has approved allowing Lemmon Valley residents suing the city of Reno to get class action status. The plaintiffs say the city of Reno ignored a 2007 water study that showed any increase in water in the North Valleys would mean an increase in waste water and storm run-off. The study said water would end up in Silver Lake and Swan Lake. The suit charges the city continued to allow development in the area and pumped water from Silver Lake to Swan Lake. The suit says the city protects businesses near Silver Lake at the expense of Lemmon Valley.