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MSD: Sewer Surcharge with Backflow Device (Bad Plumbing)

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This shows a house with bad plumbing and a backflow device installed to prevent water from backing up into the home's basement. Ground water is building up under the home and the lateral line is cracked. Watch what happens during dry conditions. During raining conditions when the sewer reaches its capacity watch how the backflow device prevents flow from the sewer from entering the home's basement, but ground water still infiltrates the basement through the cracked lateral line. .
MSD: Sewer Surcharge with Backflow Device (Bad Plumbing)
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