
South Rim Wastewater Treatment Plant — process, lagoons, and a 2025 PFAS finding
The South Rim’s fenced 1972 wastewater plant, its lagoons, and a 2025 USGS study that traced PFAS and drugs from its effluent into a nearby spring.

The South Rim’s fenced 1972 wastewater plant, its lagoons, and a 2025 USGS study that traced PFAS and drugs from its effluent into a nearby spring.