A groundbreaking water research facility is taking shape along the San Diego River, giving scientists access to something they’ve never had before: real water, in real time. The project, called the One Water Lab, is being developed by San Diego State University. … What makes it unique is direct access to multiple water sources, including the San Diego River, stormwater runoff, and even wastewater. A dedicated sewer line will allow researchers to work with wastewater onsite before safely returning it to the system. Next door, a massive biofiltration basin is already quietly doing critical work. The system collects stormwater and treats it through layers of specialized media, helping remove pollutants before they reach the river.