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Entrepreneurs on the Neponset River designed a separation of the water from the Charles River to power their mills. Over time, a total of 20 dams were built along the Charles
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Moody Street Dam was contstructed in 1814 to power cotton mills and it created a 200-acre mill pond with bays and inlets between Newton Lower Falls and Waltham.
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Government reports listed 43 mills along the 9.5-mile tidal estuary from Watertown Dam to Boston Harbor being polluted by bi-products from the mills that were dumped into the Charles River.
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Charles Elliot and others convinced political leaders to move industry back from the lower Charles River.
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Transformation of the "stinking tidal estuary" into the manmade Charles River Basin.
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Due to the human acitivities impact on the Charles River, The Quabbin-to-Boston Water Supply System was constructed. This engineering feat started the growth density in metropolitan Boston.
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Charles River Watershed Association was formed in responde to increasing public concern about the environment and the declining condition of the River.
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Afterthe passage of the Clean Water Act, the CWRA was successful in promoting construction of modern waste water plants in the upper Charles River and get strict limitations on the industrial discharges into the river.
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The efforts to clean up are intensified when Conservation Law Foundation sued federal and state officials to clean up Boston Harbor.
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CRWA is working with the EPA to implement innovative features in the federal permitting process that will further upgrade waste water treatment at plants on the river to reduce discharge pollutants.