Quote:
Originally Posted by Domas
Couldn't you connect the drain to the sewerage? (the same you dump water from sinks, toilets, showers).
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As mentioned above, in most non-rural places the city tries to have strict control over what enters the sewer system. Of course you could dump oil down your sink drain, but the idea is that you're generally not going to. Putting a drain to the city sewers in the garage is pretty much (to the city) a guarantee that you'll be putting chemicals into the system. Storm sewers are normally a better option anyway, at least around here they are much easier to connect to.
Another option would be to add a weeping tile to the outside of the garage, then connect to that.