A proposed 2,900-home development northwest of San Antonio is drawing sharp criticism over its potential impact on the region’s primary drinking water source, the Edwards Aquifer. As first reported by KSAT, the Guajolote Ranch project—backed by Florida-based Lennar Corp.—would include a new wastewater treatment plant discharging treated effluent directly into the Helotes Creek watershed, which recharges up to 15% of the aquifer.
Dr. Saugata Datta, chair of Earth and Planetary Sciences at UTSA, warned that even advanced wastewater treatment may not eliminate “forever chemicals” and other contaminants, raising long-term health concerns.
The development’s wastewater permit was recently recommended for approval by state administrative law judges. The Texas Commission on Environmental Quality (TCEQ) will now review the permit, with a decision expected later this summer. The Scenic Loop–Helotes Creek Alliance and other local groups have voiced strong opposition, citing both environmental and public health risks.
If approved, the facility would discharge up to 1 million gallons per day of treated wastewater. The matter could escalate to district court, depending on the TCEQ’s final decision.Engineering, treatment equipment, and groundwater monitoring firms should watch this case closely. With growing public scrutiny of aquifer-fed systems and PFAS risks, future developments in recharge zones could face tighter permitting, stricter treatment requirements, and higher liabilities.
