I’ve seen hundreds of washing machines and laundry tubs use a makeshift “stand pipe” to divert the water to a basement floor drain. But I’ve never seen a dishwasher use the same method. For some reason, this is a DLR (Doesn’t Look Right).
I would not think this would be a sanitary method of draining the dishwater. What would others recommend in this case? Maintenance Repair or a Defect and call in a plumber? There isn’t a Wye connector at the base of the piping, either, but maybe the Tee connector will slow down the flow enough that it won’t spill all over the floor.
If it doesn’t look right mention it. They drain sinks into floor drains like that in restaurants all the time but in the basement like that with food in the dishwasher waste I would just tell them to call out a plumber. Doesn’t look like a professional install anyways.
There is a very thin line between “gray water” and “waste water”.
Water from a clothes washer, a laundry tub, a bar sink (glasses only), a bathroom sink/shower, and a mop bucket drain are considered grey water.
Water from a dish washer and other sinks that would contain food particles, as well as the obvious other nasty drains containing feces are considered waste water.
I don’t call out slop sinks in basements with municipal sewer that drain to a floor drain. It is very common in our area that washers and/or utility sinks discharge to basement floor drains. These drains are usually 4 to 6 inches below the finished poured floor. I agree with Jeff’s comments. I did call it out in the finished report.
I carry all reference material on my computer. I am always connected to the Internet and can download anything I might need - all while on site. How is that “inferior?”
Air-gaps are required in most CA jurisdictions. This is not an acceptable method (by CA standards) for draining of a dishwasher, even if it could be considered an “air gap.” CA requires the air gap to be above the flood level of the sink.
Master Plumber here- It’s a defect. Definately write it up. That hose is not “hard piped”- one kick and the hose is now discharging food particles all over the floor. The dishwasher discharge hose needs to be piped to a standpipe under the sink in a permanent fashion so that it cannot drain anywhere that it is not supposed to. The standpipe will have a built in air gap fitting. A hose running across the floor is not an “air gap”. An air gap needs to have physical separation from the drain to which it discharges straight down typically 2 times the pipe diameter or a minimum of 2"- i.e. 2 inch pipe need to discharge 4 inches above the drain it is discharging to.
