DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (
-   Plumbing (
-   -   Illinois code for dishwasher drain line (

Angela S 05-12-2013 09:02 AM

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?

joecaption 05-12-2013 09:14 AM

Post a picture of what you have now.

TheEplumber 05-12-2013 09:29 AM

199 Attachment(s)
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

Angela S 05-12-2013 09:44 AM

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."

Angela S 05-12-2013 10:05 AM

1 Attachment(s)
Here is the photo

Anti-wingnut 05-12-2013 10:20 AM

I think a bigger problem is that everything is piped sideways

Anti-wingnut 05-12-2013 10:25 AM

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

GBrackins 05-12-2013 10:27 AM

1 Attachment(s)
here ya go ....

Angela S 05-12-2013 11:04 AM

Here is the code:

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.

GBrackins 05-12-2013 11:07 AM

a call to your building department can answer your questions

Ghostmaker 05-12-2013 12:46 PM

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.

TheEplumber 05-12-2013 01:00 PM

199 Attachment(s)

Originally Posted by Angela S (Post 1177733)
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?

Ghostmaker 05-12-2013 01:09 PM

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...

ben's plumbing 05-12-2013 01:10 PM

wow really your not going to fix 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....

Angela S 05-12-2013 01:32 PM

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

All times are GMT -5. The time now is 02:08 AM.

vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Search Engine Friendly URLs by vBSEO 3.6.1