Ball Plumbing does drain and sewer cleaning, too.
The picture below is in a Mt. Vernon, WA basement. They had water coming up a floor drain when they ran water anywhere in the house.
I ran the sewer machine through the stack clean out to 120 feet. In that part of Mt Vernon, the house sewers can go across alleys, down sidewalks, across neighbors' yards and tie into a storm drain. I'm not kidding.
I was able to clear the sewer stoppage for them for under $425.00 (including tax) on a Saturday afternoon. Cheap at half the price, huh.