Phosphorus along the Wapiti RiverNutrient concentrations, in this case phosphorus, increase along the Wapiti River from upstream (HWY 40) to downstream (d/s Pulpmill) of effluent discharge from the Aquatera and Weyerhaeuser wastewater treatment plants. This effect has been documented over the past 50 years but is decreasing over time due to improvements in wastewater treatment technology.
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