Correct way to plumb waste from dishwasher please

[toomuchworknotenoughtime]

Apologies if this is answered elsewhere. I searched but couln't find anything bang on point.

So my old dishwasher eventually gave up the ghost and has been removed. The waste hose simply exited through a hole in the external wall at ground level and then dropped down about a foot into the drain. (I couldn't actually pull the hose out and had to cut it to remove the old dishwasher).

My plumber has let me down and I'm faced with sorting out the waste myself. I can't follow the hieroglyphics that purport to be the installation instructions. I would therefore appreciate advice on the best way to deal with the waste hose.

Option 1: Another small hole in the wall and straight out to the drain.
Option 2: Connect to the dishwasher connector which is present on the kitchen sink trap. In this case do I have to lift the hose up to the underside of the worktop before looping it down to the connecter or can I simply let it snake across the floor and then up to screw the hose into the connector. Also, do I need a one way valve.
Option 3: drill a hole in the wall and install a drain standpipe for the waste hose. The least preferred option because I don't have the tools.

Many thanks

 

[tincup]

Hi

Sounds like option 2 is the least expensive and the least time consuming.
I like to see a hose clip fitted just to be sure it stays put.

 

[seco services]

I prefer option 2 i hate standpipes.

If you use option 2 yes it must go up to a height of about 600mm worktop height then to connection on sink waste.

You can't have it across floor then upwards to waste trap as it'll hold waste water.

 

[CBF]

2 is fine if you don't mind a guggle noise when it empties, yes it must go up at high level first before going down to the connector.

3 is best but as you say you don't have the tools