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Old 05-12-2013, 10:02 AM   #1
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Illinois code for dishwasher drain line


Can someone tell me when this code changed to disallow the dishwasher to drain into the disposal? I have a professionally installed dishwasher that I am now being told is hooked up incorrectly. I think it was installed around 2004 or so. We are selling the home and the home inspector has pointed this out. Any estimate on how much to correct?

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Old 05-12-2013, 10:14 AM   #2
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Illinois code for dishwasher drain line


Post a picture of what you have now.

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Old 05-12-2013, 10:29 AM   #3
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Illinois code for dishwasher drain line


I don't know your code-sorry. Did he say what the requirement is or what he expects?
He may be asking for an air gap between the disposal & DW
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Old 05-12-2013, 10:44 AM   #4
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Illinois code for dishwasher drain line


I can't figure out how to upload a photo. The dishwasher drains into the disposal above the trap. Inspector said
"The dishwasher was noted to be draining into the garbage disposal. While the disposal is manufactured for this, it is locally considered to be a hazardous cross connection. Recommend correction by a licensed plumber."
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Old 05-12-2013, 11:05 AM   #5
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Illinois code for dishwasher drain line


Here is the photo
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Old 05-12-2013, 11:20 AM   #6
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Illinois code for dishwasher drain line


I think a bigger problem is that everything is piped sideways
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Old 05-12-2013, 11:25 AM   #7
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Illinois code for dishwasher drain line


Your assembly doesn't have a airgap, or Johnson Tee or at the minimum, a high loop to prevent siphoning. Here is a web site showing the correct connections using a air gap

http://www.smartplumber.org/garbage_disposal.html
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Old 05-12-2013, 11:27 AM   #8
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Illinois code for dishwasher drain line


here ya go ....
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Old 05-12-2013, 12:04 PM   #9
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Illinois code for dishwasher drain line


Here is the code:
TITLE 77: PUBLIC HEALTH
CHAPTER I: DEPARTMENT OF PUBLIC HEALTH
SUBCHAPTER r: WATER AND SEWAGE
PART 890 ILLINOIS PLUMBING CODE
SECTION 890.770 DISHWASHING MACHINES


Section 890.770 Dishwashing Machines

a) Domestic Dishwasher (Private Residence). When a domestic dishwashing machine drain line is connected to the house side of a trap from a sink, the drain from the dishwasher shall be carried up to the underside of the spill rim of the sink. Dishwashing machines shall discharge separately into a trap or tail piece of the kitchen sink and shall not connect to the food waste disposal unit.

b) Water Supply Connection. The water supply to commercial dishwashing machines shall be connected through an air gap or by means of proper backflow protection, e.g., a non-pressure type (atmospheric) vacuum breaker or a dual check valve backflow preventer assembly (DuC), depending upon the circumstances.



I am just trying to pinpoint when this code was changed so I know if this is the fault of my installer. I am not going to be fixing this.
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Old 05-12-2013, 12:07 PM   #10
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Illinois code for dishwasher drain line


a call to your building department can answer your questions
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Old 05-12-2013, 01:46 PM   #11
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Illinois code for dishwasher drain line


Call your local plumbing inspector / building department, What the house inspector is concerned about is the lack of a loop in the dishwasher drain. This prevents your kitchen sink if it blocks from going into the dishwasher. Some models on new dishwashers have the loop tied up to the side of the dishwasher itself. So a loop under the kitchen sink would not be necessary.
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Old 05-12-2013, 02:00 PM   #12
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Illinois code for dishwasher drain line


Quote:
Originally Posted by Angela S View Post
I am just trying to pinpoint when this code was changed so I know if this is the fault of my installer. I am not going to be fixing this.
With all due respect- If your not going to fix it, what does it matter?
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Old 05-12-2013, 02:09 PM   #13
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Illinois code for dishwasher drain line


Why would you think an appliance installer or handy man has any concern with modern day plumbing code? What do they care if your family becomes sick.. You saved money by not using a professional...
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Old 05-12-2013, 02:10 PM   #14
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Illinois code for dishwasher drain line


wow really your not going to fix it....call your local code office see when code was changed ....have a good day...sorry guys for your time...ben sr again as mentioned no disrespect but people want advice to fix things....
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Old 05-12-2013, 02:32 PM   #15
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Illinois code for dishwasher drain line


If you had read my original post you would know that I am selling my home. I am trying to decide how much to credit the buyer or if I should pursue this with the company that installed it. If I was staying in the home I would fix it myself by bringing in a plumber. It is a newer model dishwasher and was professionally installed by a plumber. Thank you all for the advice

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