Natura Wastewater Treatment Plant, Tijuana, Baja California, Mexico

Natura is a wastewater treatment plant located in Tijuana, Baja California, Mexico, serving a population of approximately 13,722. The plant is situated in the Zona Río district, near the Tijuana River, and falls under the regulatory framework of Mexico's National Water Commission (CONAGUA). As a medium-sized facility, it is subject to Mexican Official Standards (NOMs) for wastewater discharge, which set limits on pollutants to protect water resources and public health. Mexican regulations require secondary treatment for plants of this scale, with additional nutrient removal in sensitive areas. The facility likely employs conventional biological treatment to meet discharge standards. Treated effluent from Natura is discharged into the Tijuana River watershed, which flows into the Pacific Ocean near the US-Mexico border. This coastal region supports diverse marine life and is important for local fisheries and tourism. The plant plays a key role in reducing pollution loads to the river and ocean, helping to protect downstream ecosystems and public health in the Tijuana estuary.

The Tijuana River watershed drains into the Pacific Ocean at the Tijuana River Estuary, a critical habitat for migratory birds and marine species. The region's semi-arid climate means river flows are seasonal, and treated wastewater provides a consistent base flow that supports aquatic life. Discharge from the plant must comply with Mexican standards to prevent eutrophication and protect coastal water quality, which is vital for local tourism and fishing industries.