The risks to water quality index estimates pressure to water quality due to pollution loads discharged by industry and water use by domestic, livestock, and coffee processing sectors.
How is it scored?
The potential change in water quality index analyzes how much pressure pollution discharges have on river waters. The analysis includes measures of organic matter, nutrients and suspended solids, as well as other conditions affecting water quality (IDEAM, 2010a). Each station has an average potential change in water quality value. The scores for all stations in each basin are averaged together. This value is then converted from the scoring by IDEAM to the 20-point scale.