Variation of water quality from Chicamtoltina stream through two localities
Keywords:
Water quality index, Chicamtoltina stream, ionic compositionAbstract
The Chicamtoltina stream has a length of 13 km from its source in the city of Alta Gracia to the mouth of the river Anisacate in the town of the same name. Along its length, it receives various sources that vary in quality, such as effluents from the wastewater treatment plant (WWTP) downstream of the city of Alta Gracia. The Canadian Council of Ministers of the Environment (CCME WQI) Water Quality Index (WQI) was applied to evaluate the variation in water quality of the stream along its course, considering its landscape importance and recreational use. At the same time, a study of ionic composition was carried out to evaluate the differences that the different sources flowing into the stream can mean. The results show that the stream has an autodepuration capacity, showing the stabilization of the organic material indicators (BOD and DO) but the recuperation of the sanitary aspects is not enough (high leves of Escherichia coli ). The ionic composition shows a change in the ionic state of its waters, going from a calcareous and bicarbonate-type state to a more alkaline state.
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