Laundry lint can collect in some drain setups, especially where a washing machine discharges into a utility sink. A screen can catch some lint, but a neglected screen can also restrict flow. Check the washer instructions and the design of the discharge setup before adding a filter.
Observe where the water rises
If the utility sink fills during discharge, note whether it drains slowly at other times. If water rises out of a standpipe, report whether nearby fixtures are also slow. Stop using the washer if water threatens to overflow.
Give the plumber the setup and history
Share a photo of the discharge point and note any filters, changes to the washer, or prior cleanings. A plumber can check whether the restriction is in an accessible screen, a fixture trap, or a shared drain farther downstream.
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