NAT.B10Water quality
About the data
Approximately 80% of global wastewater is untreated when released back into the environment, causing significant negative effects on both ecosystem functioning and human health (IUCN, n.d.). This indicator is aligned with the SBTN interim target to reduce water quality pressures in high-impact parts of the value chain in line with good ambient water quality by 2030.
A note on the scoring system
Wikirate uses a standardized 10-point scoring system to enable comparison of company scores across different benchmarks. In the Nature Benchmark, companies can earn 1 point per indicator, which are then added together and calculated as a percentage of the total score for a measurement area (MA) to determine the final score for the MA. The overall Wikirate score is calculated by combining these scores with the appropriate weightings, and converting them to a 10-point scale. For instance, if a company achieves a final score of 50, the corresponding Rating will be 5.
Formula
score = (x) -> if x == "Yes" 10 else 0 weights = [0.25, 0.25, 0.25, 0.25] water_quality = [pressure_reduction, discharge_water_quality, reporting, pressure_reduction_targets] weights.reduce((weighted_sum, weight, index) -> weighted_sum + weight*score(water_quality[index]) , 0)
