Chiqueritos Wastewater Treatment Plant, Culiacán, Sinaloa, Mexico

Chiqueritos is a secondary-level wastewater treatment plant located in the town of Chiqueritos, within the municipality of Culiacán, Sinaloa, Mexico. The plant serves a population of approximately 729 residents and has a designed capacity of 172.80 m³ per day, with a discharge volume matching that capacity. It operates as part of the municipal wastewater infrastructure for this small coastal community. As a secondary treatment facility, Chiqueritos provides biological treatment to reduce organic matter and suspended solids before discharge. Under Mexican regulations (NOM-001-SEMARNAT-1996 and subsequent updates), wastewater treatment plants must meet specific quality standards for discharge into water bodies. For plants of this scale, secondary treatment is typical and aligns with national requirements for protecting water resources. The plant is situated within 10 km of the Pacific Ocean, indicating that its treated effluent likely drains into coastal waters or a nearby estuary. Given the proximity to the coast, the discharge may eventually reach the Pacific Ocean via local streams or drainage systems. This coastal location underscores the importance of effective treatment to protect marine ecosystems and coastal water quality.

The plant's discharge likely enters local waterways that flow toward the Pacific Ocean, contributing to the coastal watershed of Sinaloa. The region's marine environment supports diverse aquatic life, including fish and crustaceans important for local fisheries. Effective secondary treatment helps reduce nutrient and pollutant loads, mitigating risks of eutrophication and protecting downstream coastal habitats.