Costs grow to $1.1 billion for the City of Baltimore's sewer project. In the last 13 years Baltimore has spent $700 million to fix leaking sewers in the city, and officials say they will spend $400 million more to decrease wastewater pollution that drains into the city streams and the harbor. Finding and fixing the leaks has been costly and challenging, city officials say, while critics wonder why the cost continues to grow and the problem persists.

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