Abstract
Brazilian law ensures that citizens have adequate access to drinking water. Three important indicators of the operational quality of the water supply service are the incidence of samples of drinking water outside the standard of potability for the parameters of residual chlorine, turbidity, and total coliforms, whose values vary from 0% to 100%. This work aimed to analyze the values of the incidence of samples outside the Brazilian potability standard of these three parameters in 70 municipalities in the south of the State of Bahia between 2002 and 2018 and to represent these results spatially. The studied municipalities presented historical averages of incidence of non-conformity that varied between 0.01% and 52.50% for residual chlorine, 0.16% and 100% for turbidity, and 0.00% and 58.33% for total coliforms. Despite the wide variation in these values, the general incidence averages for the entire region were 1.82% for residual chlorine, 3.22% for turbidity, and 1.93% for total coliforms. Some municipalities need to adjust their treatments to decrease the percentage of non-standard samples for the studied parameters in order to supply the population with water that meets the national drinking standard.
Highlights
Introdução O adequado acesso da população aos serviços de saneamento básico é condição essencial para qualidade de vida e promoção da saúde e salubridade ambiental
Brazilian law ensures that citizens have adequate access to drinking water
Three important indicators of the operational quality of the water supply service are the incidence of samples of drinking water outside the standard of potability for the parameters of residual chlorine, turbidity, and total coliforms, whose values vary from 0% to 100%
Summary
Introdução O adequado acesso da população aos serviços de saneamento básico é condição essencial para qualidade de vida e promoção da saúde e salubridade ambiental. O presente trabalho objetivou calcular as médias históricas dos valores de incidência de amostras fora do padrão de potabilidade brasileiro para os parâmetros de cloro residual, turbidez e coliformes totais, abrangendo dados entres os anos 2002 e 2018 dos 70 municípios do estado da Bahia pertencentes à mesorregião Sul Baiano e analisar espacialmente a distribuição dessas médias.
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