 The study found that the Waddenay River in Cusco City, Peru had high concentrations of linear alcohol benzene sulfonates, loss, during both the dry and wet seasons. During the dry season, the highest concentration was 23.17 mg per liter while the lowest concentration was 0.01 mg per liter. During the wet season, the highest concentration was 1.47 mg per liter while the lowest concentration was 0.09 mg per liter. Additionally, the study found that the presence of loss decreased the amount of dissolved oxygen in the water and increased its conductivity. This article was authored by David Cho Kispe, Mary Lou's Masco Ariola, Betsy Suri Ramos Pacheco, and others.