"What they should be doing is finding money from donors to buy new sewer pipes, " he said.

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It would be absurd for every household to be served by three sewer pipes or five power lines.

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And I just met with folks from a local company, RedZone Robotics, who make robots that explore water and sewer pipes.

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Referring to the 22, 000 discharge pipes, the charity said the figure only referred to pipes known as combined sewer overflows and emergency overflows.

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