Overview
San Marcos Southeast WWTP is a projected wastewater treatment plant in San Marcos, Texas, serving 42,000 people. It will operate under US EPA NPDES regulations for municipal wastewater.
San Marcos Southeast WWTP is a planned wastewater treatment facility located in San Marcos, Texas, within Hays County. The plant is designed to serve a population of 42,000, positioning it as a medium-sized municipal treatment facility for the region. As a projected facility, it is not yet operational but will address the growing wastewater needs of the San Marcos area. The plant will be subject to the US Clean Water Act and will require an EPA NPDES permit issued by the Texas Commission on Environmental Quality. For a facility of this scale, secondary treatment is typically mandated, with potential additional nutrient removal requirements if discharging into sensitive waters. The specific treatment process will be determined during design and permitting. The treated effluent will likely discharge into the San Marcos River, which flows into the Guadalupe River and eventually to the Gulf of Mexico. The San Marcos River is ecologically significant, supporting diverse aquatic life including several endemic species. The plant's discharge will be regulated to protect this sensitive riverine ecosystem.
Environmental context
The San Marcos River, a spring-fed river in central Texas, is the likely receiving water body for the plant's discharge. This river flows into the Guadalupe River, which empties into the Gulf of Mexico at San Antonio Bay. The San Marcos River is ecologically sensitive, supporting a high diversity of aquatic species, including the endangered Texas blind salamander and fountain darter. Protecting water quality in this river is critical for maintaining its unique spring-fed ecosystem and downstream estuarine habitats.
Frequently asked questions
San Marcos Southeast WWTP is located in San Marcos, Texas, United States, near the Student Health Center on Student Center Drive in Hays County.
The plant is designed to serve a population of 42,000 people in the San Marcos area.
As a projected plant, the discharge method is not yet finalized, but it is expected to discharge treated effluent into the San Marcos River, which flows to the Guadalupe River and the Gulf of Mexico.
The plant will operate under the US Clean Water Act and will require an EPA NPDES permit issued by the Texas Commission on Environmental Quality, which sets limits on pollutants to protect water quality.
For a medium-sized plant serving 42,000 people, secondary treatment is standard under the Clean Water Act. Additional nutrient removal may be required if the receiving water body is sensitive to eutrophication.
Nearby plants