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About DC Water Blue Plains
DC Water’s Blue Plains Advanced Wastewater Treatment Plant opened in 1937. Currently it treats wastewater from the District of Columbia, Maryland and Virginia and is considered the largest treatment plant of its kind in the world. On an average day, close to 300 million gallons of raw sewage flows into the Blue Plains Advanced Wastewater Treatment Plant to be treated. After treatment, the cleaned water flows into the Potomac River which leads to the Chesapeake Bay. To protect our waterways, DC Water is under strict requirements to dramatically reduce the amount of nitrogen and phosphorous in the cleaned water we discharge into the Potomac. In fact, these permit limits are some of the most stringent in the country.