Analysis of Wastewater Treatment Efficiency: Environmental Consequences in a Peruvian District

Rivers are constantly affected by domestic wastewater discharges, which, depending on their pollutant load, can cause eutrophication, loss of biodiversity, alterations in the behavior and physiology of aquatic species, as well as public health problems. This study analyzed the influence of wastewater discharges from the wastewater treatment plant (WWTP) in the Elías Soplin Vargas district on the Yuracyacu River. Four sampling points were established, and seven parameters were monitored, following Peruvian regulations D.S. Nº003-2010-MINAM over a three-month period. The results indicated that the mixing zone of the Yuracyacu River partially dilutes the concentrations of the effluent but does not completely mitigate its environmental impact. Compliance with Peruvian regulations, such as maximum permissible limits (MPL) and environmental quality standards for water (EQS), directly determines the environmental quality of the river.