Discharge sump pump into same drain as kitchen sink and laundry tub?

*I don't know where you live, but in New Jersey it is illegal to have a sump pump discharge into a sanitary sewer line. Apparently in so doing it would add more volume and consequently more expense to sewer treatment plants.

Yes. First thing to do is check if it's allowed or not. Many places it isn't for the very good reason John cites.

And if you are allowed, you will need to provide a vent, as the 1 1/2" line is a drain line for the kitchen sink and laundry. Your pump may overtax the lines capacity as well, as the line is probably at its rated limit.

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Some would say extra volume does equal extra expense. A facility only has the capacity to process X amount of sewage water per day. If it gets more than that, you need another plant. Plus, there are chemicals involved too, aren't there?

The big issue with the extra volume isn't the expense -- it's simply the extra volume. Dumping rainwater into a sanitary sewer can easily overwhelm it. And if this happens, the inevitable result is raw sewage in rivers and streams.

Don't do it.

paanmc had written this in response to

:

I live > >> >>

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Where I am and most water companies, it would be a big fine the water co said, with an extra charge every day. Call your water co, and plan to run it outside. A big rain can back up sewers and it wont drain out just when you need it. Some areas sewers can back into houses, then you have to have it pump into the yard. Its not worth the risks to drain into a sewer.

.=3D

The few houses in my neighborhood that have sump pumps also have drainage fields around there basement. The sump pump is tied to theh drainage field and it goes from there to the curb to run down to the storm sewer.

Jimmie