Pathogenic microorganism in water supply systems for consumption of human settlements, Ucayali 2019

Abstract

The objective of this study was to identify the presence of pathogenic microorganisms in water supply systems for consumption in human settlements in the city of Pucallpa, Ucayali region. For data collection, the "Protocol of procedures for sampling, preservation, conservation, transport, storage and reception of water samples for human consumption" was used, within the framework of the Quality Management System -NTP ISO/ IEC 17025. Samples from 12 water supply systems were analyzed, with 3 replications per water system. As a result, fecal coliform bacteria were identified in 66% of the systems in ranges from 2 CFU/100 ml to 31 CFU/100 ml, Thermo-tolerant coliforms in 25% of the systems in ranges from 2 CFU/100 ml to 5 CFU. /100 ml, E.coli in 25% of the systems in ranges from 1 CFU/100 ml to 2 CFU/100 ml, Salmonella spp. in 8.3% of the systems in ranges of 1 CFU/100 ml. However, the presence of Legionella spp., Pseudomonas aureginosa and Vibrio Cholerae was not identified in the systems. In 100% of the systems, the presence of Protozoa and Helminths was not identified. It is concluded that 66.6% of the water supply systems evaluated, present pathogenic microorganisms in the water destined for the consumption and use of the population to serve human settlements, therefore, they do not comply with the Maximum Permissible Limits established in the DS.031-2010-DIGESA "Regulation of the quality of water for human consumption".