The players’ role is to test water for pollution. During those tests, users will learn how lake health is closely related to the concentration of the nutrients phosphorous and nitrogen in the water and the effect of high nutrient concentrations on unhealthy algae growth. They will also learn about the affects of fertilizer run-off, faulty septic systems, animal faeces droppings, soil erosion from shoreline disturbances and algae decomposition’s consumption of oxygen and ensuing iron and hydrogen sulphide release.