All sinks, washer, and tub are slow to drain
Currently the sink is backing up. I just used the garbage disposal and put some spagetti noodles down. Then water backed up in the sink and also in the dishwasher. I checked the pee trap for clogs. I just put in new pee trap last month. Also new garbage disposal and dishwasher.
In addition, the washer is draining slow which is located in the gargage as well as the bathroom sink. This house was built in 1956. I put in new pee trap in bathroom last month also. How do you address issues in the plumbing line? I have tried to resolve it fixing things I can do from the interior. New faucets in both kitchen and bath, new pee traps, new dishwasher, and new disposal. Oh yes, also the tub is draining slow also in bathroom.
HELP!!
Susan