Abstract
In Guatemala 90 % of urban water has a rural origin and 70% of the sources are superficial. We selected three rivers of the upperbasin of Sis Icán (Chita, and Sacobá Ixconá-Sis; Pacific coast) to assesdrinking water. The watersheds have agriculture and livestock farms,as well as urban and rural populations. Water quality was assessed in the origin and end of each river, in 2012. The variables measured were:NO3, NO2 =, SO4 =, Fe, Cl, Mn, hardness, total coliforms and fecal coliforms.We applied the water pollution index, which is the average of the ratios between observed parameters and regulated standard values.We found statistically significant inputs for chemical and microbiological contaminants (total and fecal coliforms). The level of chemicalcontaminants does not compromise the quality of water for human consumption, but the biological contamination does.
Highlights
RESUMEN: En Guatemala el 90% de las fuentes de abastecimiento del agua urbana son rurales (70% superficiales)
Water quality was assessed in the origin and end of each river, in 2012
We applied the water pollution index, which is the average of the ratios between observed parameters and regulated standard values
Summary
RESUMEN: En Guatemala el 90% de las fuentes de abastecimiento del agua urbana son rurales (70% superficiales). En el cuadro 1 se detallan los resultados de las pruebas de hipótesis con un nivel de confianza del 95% para los índices de contaminación de agua (WPI), en los tres casos se encontró que los valores de los puntos de monitoreo ubicados en las partes altas fueron estadísticamente menores que los índices de contaminación obtenidos en la desembocadura de los ríos.
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