[mickeychcg]

I recently purchased a condo in the City of Chicago, where the inspectors are notoriously, let's say... uncompromising.

Each unit in the building has a grease trap under the kitchen sink. Seems like overkill, right? However, the building was an old 1920s bank building and apparently did not have a building, grease trap.

There is no disposal under the sink and I want to install one, but do I need to remove the grease trap altogether? Can I leave it there and run the output of the disposal through the grease trap and periodically, clean it out?

[speedball1]

Are you on a sewer or are you on city sewer? Back to you, Tom

[ballengerb1]

This would be city Tom, my city.

[hkstroud]

Why not just ask inspector is grease trap is required? If grease trap is not longer required just remove and plumb disposal directly to sewer line?

[ballengerb1]

Christmas time in Chicago it is the custom to ask your inspector a question written on a $100 bill

[speedball1]

Back to my original question. Are you on a septic system or are you on city sewer? A separate drain line and grease trap are required on septic systems. If the building is on a septic system then a grease trap is necessary. Do you have a washer set up in your unit? Back to you, Tom

[massplumber2008]

A quick phone call may help you to avoid that $100.00 "gratuity", Bob! Otherwise, in my area, there are NO garbage disposals allowed to enter a grease trap... the solids add to the gunk and will definitely increase the frequency of cleanings needed over time. I don't know how often, if ever, you have cleaned the existing grease trap, but it is a nasty job that is not something I would recommend to anyone (unless someone is paying me $125.00 per hour, of course).

Mark