An analysis of the utilisation and quality of rainwater in different collection systems located in the Pereira–Dosquebradas (Colombia) conurbation was conducted to evaluate the conditions in these systems and thus determine whether rainwater is safe water for domestic, commercial and industrial purposes. The quality of rainwater and its relation to selected variables (roofing material, material deposits, piping material and amount of precipitation) were evaluated. Six buildings with different types of roofing (zinc, polycarbonate or fibre cement) that have installed systems to capture rainwater were selected for the evaluation. According to the results, the sampled water is suitable for different uses. In cities, rainwater can be adapted and eventually used as an alternative water source, thereby reducing dependence on local and external sources.

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