Quote:
Originally Posted by mpaca
So that will only prevent sewage going towards your house in the event that there is a plugged mainline out front (or in the lane - depending on where everyone's sewer lines run in the block). If you live in an older area, the storm and sewer lines may be combined as well. If that's the case, in the event that there is a huge storm and the storm lines overflow, the water won't overflow into your house either.
Unless I confused your post with another one in this thread, it sounded like you had the blockage in between your house and the mainline? If that was the case, the back-flow preventor cannot help prevent any backups next time the problem arises.
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had the line scoped- no blockages/roots they said it appears that the ground settled causing the line to sag or something to that effect.
