Water Quality

At CMPC we depend on water resources. This is why, after its use, we ensure returning water in conditions similar to water we extracted, and for this we measure quality of all industrial effluents, as we are committed to complying with the discharge parameters regulation and publicly show measurements of relevant parameters such as Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), Total Suspended Solids (TSS) and Organic Compounds.

Contaminant Loads in t

2018 2019 2020
DQO 41.799 35.699 39.014
DBO 5.024 3.578 2.562
AOx* 389 400 444
SST 4.833 2.958 2.981
*AOX are compounds generated by Pulp mills (Santa Fe, Pacífico, Guaiba and Laja). Each of these mills has an internal annual intensity goal for the discharge of this compound, more demanding than the applicable local regulations, which is progressively updated, becoming more and more ambitious.