ANALYTICAL EVALUATION OF THE TOMATALY RIVER OF MUNICIPAL WASTEWATER DISCHARGES THAT REACH THE TUXPAN LAGOON, GRO

Abstract

The town of Tuxpan is located five kilometers east of the city of Iguala, Gro. The Laguna de Tuxpan is the main body of water in the area. It is located at coordinates 18°20'57″N-99°28'43″W at an altitude of 757 meters above sea level. The contamination of the lagoon is generated by different activities of the same population, as well as by the sewage from Colonia El Tomatal, which reaches the lagoon through the El Tomatal River. The Mexican Institute of Water Technology carried out the identification, gauging and characterization of five sampling points along the Tomatal River and three wastewater discharges in the El Tomatal neighborhood. The Tomatal River, despite its degree of contamination, is "ACCEPTABLE", according to the water quality index. The three discharges identified generally do not comply with the parameters of fats and oils, chemical oxygen demand, total suspended solids and fecal coliforms with respect to the maximum permissible limits of NOM-001-SEMARNAT-1996 and the Federal Rights Law. It is proposed for both localities, the construction of decentralized wastewater treatment plants and a sewage network for the conduction to said plants. As a second option, the construction of a sewage network, so that the wastewater generated is conducted for treatment to the PTAR Iguala Gro.