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Physicochemical and microbiological characterization of groundwater in the municipalities of La Paz and San Diego, Cesar, Colombia
Authors: Liliana Vence Márquez, Massiel Rivera González , Yudis Osorio Bayter y Adriana Beatriz Castillo Sarabia
Number of views: 441
Among the functions of evaluation, the control and environmental monitoring of the uses of existing water sources in Cesar was studied by the Corporación Autónoma Regional del Cesar, CORPOCESAR, to evaluate the quality of groundwater located in 93 wells in the municipalities of La Paz and San Diego (Cesar) in 2009 in accordance with decree 1575/07 and resolution 2115/07 of the Ministerio de Protección Social (Ministry of Social Protection) and the Ministerio de Ambiente, Vivienda y Desarrollo Territorial (Ministry of Environment, Housing
and Territorial Development). Were characterized
microbiological properties (determined from Psuedomona
aeruginosa and protozoan pathogens) and physiochemical properties (conductivity, pH, temperature, total dissolved solids, salinity, acidity,basicity, turbidity, chlorides, ammonia, nitrites, iron, magnesium, sodium and calcium; the last three elements being necessary for the calculation of the viability of irrigation, with the end of quantifyingthe quality of the water supplying the inhabitants of these lands). The Detection of P. aeruginosa was achieved via filtration through a membrane and protozoa through the flotation technique by centrifugation with zinc sulfate. Of the samples analyzed, 84.94% contained P. aeruginosa. Were identified
five genera of protozoa, Giardia sp being the pathogen
of highest prevalence at 46.1 %, followed by
Cryptosporidium sp at 22.18%. Respecting the physiochemical results, only 4.3% of the wells sampled
were determined to be suitable for irrigation without
jeopardizing public health and safety.