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Reducing Livestock
Waste
Constructed
wetlands help livestock owners reduce waste runoff from feedlots into
groundwater. Researchers at Oregon State have  constructed nine
demonstration research wetlands at their dairy farm to monitor the
effectiveness of treating dairy wastewater for subsequent discharge.
About 20% of the state’s 500 dairies are expected to implement
constructed wetlands this year, saving $800,000 annually. To preserve
drinking water quality, American Samoa Community College is
teaching composting methods to farmers who raise small pigs to help
reduce waste runoff that now pollutes the island of Tutuila’s few
remaining year-round freshwater streams.
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