When waters drains in our kitchen sink, dirty water rises and fills the bathtub and toilet in one of our bathrooms. Does anyone know why this would happen and the least expensive way we could go about fixing it? Any info would be extremely helpful.

I just installed a new sink and vanity after having a plumber do the rough in... I did my test on my sink after by filling it full then draining it. Everything was good till the tidal wave from behind me hit. About a 1/4 of the water from the sink came up the open hole that I was going to put the...

Seem like everything is back up. Recently I've been having issue with my plumbing all around. The toilet seems to be backing up into the tub and is leaking around the base. I could hear water bubble sound coming up the toilet when I try to run water down the tub. As for the kitchen sink it seems to...

I am building an addition that will increase the size of my kitchen and bath. My main waste line is not vented and is tied into a septic system. The house is 100 yrs. Old. My question is if I run a 3" pvc line of the main line and vent it straight out to the roof using 3" pvc pipe do I have to vent...