COMPARAÇÃO DA QUALIDADE DA ÁGUA USANDO MÉTODOS MULTIVARIADOS E ESPACIAIS EM UMA REDE DE DISTRIBUIÇÃO DE ÁGUA

This study analyzed interventions in a drinking water supply system from 2016 to 2021 over a six-year period using statistical tools and a Geographic Information System (GIS) for detailed mapping. This research highlighted correlations between turbidity, apparent color, and iron content, which significantly influenced water quality. Key interventions included increasing the chlorine dosage and replacing old metal pipes with new plastic ones, resulting in an overall 6% improvement in water quality. Although the Modified Water Quality Index by the Canadian Council of Ministers of the Environment identified certain districts with critical water quality levels, only spatial analysis could pinpoint specific pipes and areas within these districts that showed improvements, thereby guiding future investment strategies.