Algae blooms are a direct result of increased nitrogen and phosphorous levels, common with wastewater discharges into waterways. The addition of the two groundwater conservation districts to the case confirms that the underground bodies of water they manage could be negatively impacted by the proposed Dripping Springs wastewater permit. An Onion Creek dye study recently completed by BSEACD showed conclusively that what goes into Onion Creek winds up in the local groundwater, with eight different wells showing presence of dye that was added to Onion Creek. This hydrologic communication between Onion Creek and local groundwater, coupled with the fact that Onion Creek recharges 30 percent of Barton Springs, sits at the heart of the case against direct wastewater discharge in the Texas Hill Country. Despite the Barton Springs connection, the City of Austin was denied standing in the case.