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SUMMARY: To evaluate the influence of the constructive characteristics in well-water quality situated in the urban and rural areas of Jaboticabal - Sao Paulo, this study was conducted through the application of a questionnaire to discover the characteristics of wells and analyze the water for quality indicators. The analysis of multiple correspondence associated deep wells, situated in urban areas with a concentration of nitrate, and shallow wells, situated in rural areas, with a higher number of samples showing turbidity and thermotolerant coliforms above the limit of human potability. Thus badly protected wells can aid the transportation of contaminants to subterranean waters.