The creek eventually flows into Barton Creek and into the Edwards Aquifer, where Austin sources its drinking water.
The latest study by the Hays Trinity Ground Water Conservation District used pink dye to trace the water to nearby wells.
At least three wells were impacted.
“There are more than 200 water supply wells near or downstream from the proposed sewage effluent discharge within a mile of Onion Creek. Four of these are public supply wells. If treated sewage is discharged into Onion Creek, the only water supply for hundreds of homes is at risk,” said Dr. Lauren Ross, P.E., Ph.D. in a press release to KVUE News.
The Dripping Springs Mayor, Todd Purcell, stands by the permit… Read more from KVUE