FORMIGA, A. C. S.; http://lattes.cnpq.br/3176685232563504; FORMIGA, Aliane Cristiane de Sousa.
Résumé:
As increased human activity and its effects, the availability of clean drinking water has
become a scarce and valuable, requiring often an assessment to identify its quality for its
various uses. Thus, this study aims to evaluate the quality of groundwater sources region of
Juazeiro Municipality - EC, coming from the wells operated by CAGECE in the river basin
Salgado, under the physical-chemical aspects, concerning the variation space / time and the
limits established by Decree 2914/11 the Ministry of Health. The data of the parameters for
the periods of May and November 2013, May and November 2014, regarding the company's
heritage of 33 wells CAGECE, for a total of 124 samples, divided between the four periods.
The results were submitted to the Piper diagram for further classification and comparison of
different water groups as the dominant ions. In general, the groundwater were classified as
mixed bicarbonated water. In function of time, using the Tukey test were observed
interference level of 5% probability in pH, magnesium, and aluminum fluoride. As for the
spatial factor, there is significant variation in the level of 5% probability the parameters pH,
alkalinity, hardness, calcium, chloride, iron, STD and CE. Levels of 1% and 0.1%
significance level were detected in all wells with the nitrate by the Tukey test. According to
the Ordinance 2914/11 MS, it was confirmed that some wells showed indices related to
certain parameters above the tolerable water potability, during the four monitored periods.
The city's water is of good quality in terms of drinkability, however some areas may have
been contaminated by human actions, in this way, it is necessary monitoring to verify the
occurrence of this fact observed mainly by nitrates parameter.
