Abstract
Several factors may contribute to changes in monitoring parameters of drinking water quality, especially climatic characteristics. Behavioral studies of these characteristics are relevant to the rational and sustainable use of water resources and better monitoring of the quality of water available for the population. To assess the association between water quality and climate, this research explored physical-chemical and microbiological characteristics considered important for the monitoring of water quality, analyzed in casual samples collected daily from the distribution system of a city, and considered monthly data of climatic characteristics from 2007 to 2011. The associations between these two sets of variables were assessed by the multivariate procedure of the canonical correlation analysis. The results indicate a positive correlation between the canonical variable formed by the linear combination of climatic variables and the canonical variable formed by the linear combination of water quality variables.
Highlights
Brazil is a privileged country in terms of water resources
The study pointed to the existence of two significant positive correlations between the set of water quality variables in the distribution system and the set of climatic variables
In the context of the canonical charges, the water quality component is highlighted for fluorine, chlorine, and temperature; and for the climatic component, the frequency of rainy days, temperatures, relative air humidity, solar radiation and insolation
Summary
Brazil is a privileged country in terms of water resources. 13% of the world's freshwater availability is in Brazilian territory. This idea of abundance generated a culture of abuse. The supply of treated water is not uniform among Brazilian regions, presenting several contrasts, such as the percentage of households with treated water (Rodrigues and Batistela, 2013). Since water is an essential resource for human activities, its inadequate use and degradation due to pollution, coupled with scarcity in some regions, justifies a growing interest in studies related to its quality, and how to use it in a rational and sustainable way. For Souza et al (2014), the required level of water quality depends on its use, with different needs for consumption by humans, agriculture, among others
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