Matachí Wastewater Treatment Plant, Matachí, Chihuahua, Mexico

The Matachí wastewater treatment plant is located in the town of Matachí, in the state of Chihuahua, Mexico. It serves a population of approximately 2,025 residents, providing secondary treatment for municipal wastewater. The plant has a designed capacity of 302.40 cubic meters per day, matching the reported discharge volume. As a secondary treatment facility, Matachí meets the standard level of treatment required for small communities under Mexican water quality regulations (NOM-001-SEMARNAT). This level typically involves biological processes to reduce organic matter and suspended solids, ensuring the effluent meets basic environmental standards before discharge. The plant discharges treated wastewater into local watercourses that eventually drain into the Rio Grande basin, which flows toward the Gulf of Mexico. The surrounding region in Chihuahua is semi-arid, making water quality management important for local ecosystems and downstream water users.

The treated effluent from Matachí enters local arroyos and streams that feed into the Rio Conchos, a major tributary of the Rio Grande (Rio Bravo). This river system supports diverse aquatic life and provides water for agriculture and communities in the region. The semi-arid climate of Chihuahua means that maintaining water quality in these intermittent streams is critical for ecosystem health and downstream water availability.