Quote:
Originally Posted by craigdt
Hmm. That is interesting. Is every system set up this way?
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No, not every system is set up that way. I design a lot of underground sewer systems and the city where I work is definitely not set up like that. We have, maybe 2% of our storm drains going from the streets or parking lots to the Detroit River. The rest go to a combined system where it combines with sanitary and goes to the treatment plant before going into the river. It's an older system and has it's ups and downs. The ups are most of the water is treated before being released back into the river. The downside is your system is doing double duty and if you get a freak of nature rain you could have sewage back up into your basement.