One of the water sources for consumption that has been used a lot is Amazonas wells, as an cheap water source. Based on this assumption, this study aimed to evaluate the physical-chemical and results with the maximum values allowed by Ordinance 2,914/11. The instrumental and volumetric methods were used to determine the physic-chemical and chemical parameters. Subsequently, the statistical treatment was performed through multivariate analysis. The results revealed that the parameters meet the limits established by the Ordinance, except the turbidity in Condeixa in June to August. The parameters that was not recommended by the legislation contributed significantly to establish the quality of contamination from anthropogenic actions. The use of multivariate analysis contributed to obtain important information in the identification of similarities and differences between the parameters studied.
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