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The Harbour Solutions Project is a Canadian public infrastructure project in the Halifax, Nova Scotia region. The CAD $333 million project comprised the construction of three sewage treatment plants and connected various sewage pipe networks with lift stations to treat all sanitary sewage in Halifax and Dartmouth.〔 It was completed in 2010. ==History== For two and a half centuries prior to this project, raw sewage was discharged untreated directly into Halifax Harbour. The harbour waters have been the recipient of approximately 200 million litres of untreated raw sewage every day, enough to fill 25 Olympic-size swimming pools.〔 Shellfish harvesting from the harbour and swimming within the harbour have been prohibited for health reasons. The historic settlements of Halifax and Dartmouth were built with no thought to sewage treatment as a means of waste disposal. Throughout the 19th century, sewers were designed as a single system, with no separation between sanitary sewers, which carried domestic human waste, and stormwater drainage systems. The combined sewers simply emptied into the harbour from dozens of outfalls at the bottom of each street that met the waterfront. By the mid-20th century, it was clear that the system was not environmentally sustainable. Millions of litres of sewage were dumped into the harbour daily, consisting not only of simple human waste, but of pharmaceuticals, industrial chemicals, fertilizers, and a host of other harmful material.〔 Sewage treatment plants were proposed for both Halifax and Dartmouth beginning in the 1970s, however, the separate municipalities were never able to reach a consensus for system design and construction. That decade saw the Halifax Regional Water Commission begin to charge its customers a pollution surcharge which was intended to fund such a system. Meanwhile a host of different provincial and federal governments came and went and overall funding was never finalized. It was only following municipal amalgamation which saw the cities of Halifax and Dartmouth dissolved and merged with all municipalities in Halifax County to form the Halifax Regional Municipality in 1996 that the sewage treatment issue gained necessary traction and moved beyond the planning stage.〔 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Harbour Solutions」の詳細全文を読む スポンサード リンク
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