Análisis físico, químico y microbiológico del sistema de agua de la Junta Administradora de Agua Potable y Alcantarillado Regional Yanahurco antes y después del tratamiento convencional.

Abstract

The objective of this research is to evaluate the physical, chemical and microbiological quality of human consumption water provided by the Water Board of Water Supply and Sewerage Regional Yanahurco (JAAPARY) Region Mocha, Tungurahua Province; before and after conventional treatment, to classify it according to their degree of safety and suitability for human consumption. During the period June-July 2015 two samplings were established in 32 and 34 points respectively collection where the collection was carried out in duplicate the same as were for Sachaguayco shed, storage tank, tank distributor, prefilters No. 1 and 2, thickener and filter the water treatment plant, treated water, 23 points within the distribution system network JAAPARY water. The procedures followed the parameters described by INEN NTE (Spanish acronyms for Ecuadorian Technical Norms – Ecuadorian Standardization Institute) regulations for sampling, water quality control, and sample preservation. The physical, chemical and microbiological parameters (pH, color, temperature, turbidity, conductivity, total dissolved solids, nitrate, nitrite, fluoride, manganese, and free chlorine residual) were determined according to required standard by the NTE INEN 1108: 2014. "Potable Water requirement "; this study was applied to 30 samples for physical-chemical analysis and 66 samples for microbiological analysis and studied under the Standard Methods for the Examination of Water and Wastewater, HACH DR 28000 Method, HACH DR 900 Method, HI 98129 HANNA HI 98130 Method , and the Petrifilm Method. It was demonstrate that the drinking water provided by JAAPARY meets the maximum limits which are permitted by the established regulations concerning the parameters physical-chemical quality before and after conventional treatment, whereas, in terms of microbiological parameters before conventional treatment did not meet such requirement. 24.24% of all samples analyzed (100%) had fecal coliforms and therefore are not safe or suitable for consumption; however, after conventional treatment all samples meet the requirements in the standard. Therefore, it is concluded that the water after conventional treatment is safe and suitable for human consumption unlike that observed before treatment.