Qualidade da água e análise ambiental de nascentes no município de São Pedro do Ivaí, Paraná

Abstract

Headwaters are important sources of clean water for human consumption. In this context, when they are altered by anthropogenic actions, they lose their quantitative and qualitative capacity, which compromises their recharge and water production. The aim of this study was therefore to carry out an environmental analysis, as well as to analyze the water quality, by means of physical-chemical and microbiological parameters, of five headwaters used for consumption on rural properties in the municipality of São Pedro do Ivaí, Paraná. When quantifying the environmental assessment parameters, it was observed that none of the headwaters reached the classification of "Optimal" (Class A). Two were classified as "Good" (Class B), two as "Fair" (Class C) and only one as "Poor" (Class E). The physico-chemical analysis revealed general compliance with legal standards for iron, manganese and nitrite, but the presence of coliforms indicates fecal contamination. Variations in pH, dissolved oxygen and biochemical oxygen demand suggest different influences, requiring sanitation measures to preserve water resources. In view of this, this study contributes data that highlights the need for planning and management for the preservation and protection of headwaters, with a view to improving both the quality and quantity of water consumed by rural landowners, as well as planning for the management, protection and planning of spring areas in the municipality.