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Abstract
Caçapava do Sul, RS, Brazil produces 80% of the State’s rock–dust, and its 1st district is located near four marble quarries. A significant increase in Brazilian mineral extraction has caused serious environmental problems, such as the development and proliferation of diseases directly related to water resources. This study sought to investigate the water composition in the 1st district area. Geochemical investigation revealed waters classified as soft and hard, neutral and alkaline pH. Electric conductivity ranged from 95.7 to 548 μs cm-1, and total alkalinity ranged from 57 to 241 mg L-1. Ca and Mg ranged from 6.01 to 54.1 and from 4.6 to 32.75, respectively. All measured values met the potability standards for human consumption established by Ordinance Nos. 2914 (2011), 36‑GM/1990, and1469/2000.
Highlights
The municipality of Caçapava do Sul is located at the coordinates 30o30'44"S and 53o29'29" W and at an altitude of 444 meters above sea level (Figure 1)
This property can be quantified when the water comes in contact with limestone and dolomite rock, in which calcium and magnesium salts are dissolved
The waters where the highest electrical conductivity values were obtained coincided with the sampling points in the pool
Summary
The municipality of Caçapava do Sul is located at the coordinates 30o30'44"S and 53o29'29" W and at an altitude of 444 meters above sea level (Figure 1). It has an area of 3,047.20 km and its population was estimated in 2010 at 33,650. The study area covers the 1st District of the municipality, situated on the stretch of the river between the Mangueirão and Salso Streams. This region is unique because it suffers from the effects of limestone mining in its surroundings. At least three companies focused on marble mining 24 hours a day
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