Physicochemical and Microbiological Evaluation of the Quality of Drinking Water in Cusco (2018-2019)

Abstract

Microbial contamination represents one of the greatest risks to water intended for human consumption. This study evaluated the quality of drinking water in the city of Cusco during 2018 and 2019, with the aim of determining its suitability for consumption, identifying districts with better quality and comparing the measured parameters with the permissible limits established by Supreme Decree No. 031-2010-SA. Drinking water samples were collected in five districts (Cusco, Santiago, Wanchaq, San Sebastián and San Jerónimo), which were analyzed in accredited laboratories through physicochemical and microbiological tests. During 2018, the results showed traces of coliforms in the district of Cusco (0.1 × 10² cfu/ml in December), while in 2019 concentrations above the permissible limits of sulfates, carbonates and hardness were detected in several districts. These findings underscore the need for constant monitoring to ensure the quality of drinking water in the region.