This plumbing downside happens when wastewater from a garments washer flows into the tub as a substitute of draining correctly. This usually manifests as grey or soiled water rising within the tub through the washer’s drain cycle. An instance is a house owner beginning a load of laundry solely to seek out bathwater accumulating concurrently.
Understanding this subject is essential for stopping water injury and sustaining a sanitary dwelling surroundings. Traditionally, shared drain strains between plumbing fixtures have been extra frequent, growing the chance of this downside. Whereas trendy plumbing codes typically mandate separate vent stacks and drain strains, the difficulty can nonetheless come up as a consequence of blockages, improper set up, or failing plumbing elements. Addressing this downside promptly can avert pricey repairs and well being hazards related to standing wastewater.