When I flush my toilet dirty smelly water comes up in my tub, why?

Hi Ruby

Dirty water comes up in the tub because the toilet/tub drain line is clogged.

The drain line will need to be snaked. If you would like to do the job just let us know and we can run you down through the basics here. Otherwise, call a local plumber and have them out to see what they think, OK?

Back to you...

Mark