If you dont know what you should do then pay others to do it.

Usually check the traps first and see if it is blocked. If nothing there, can try test drainage of any pipes nearby to see if blockage is only on the sink. If only sink and nothing on traps, maybe you flush something down and it become stuck or the years of pouring cooking oil into the sink have resulted in a massive hardening of oil clump in the pipe which could only be clear with high pressure cleaning.

This post has been edited by andrekua2: Jun 10 2025, 08:31 AM

Then put a pail under your sink trap and open it to see if thats the main reason it was clogged. Run the tap to test while you are at it.

Do you use hand soap at the sink too? Hand/bath liquid soap will cause the accumulation of black colored gel like that will block the water flow as well. You will see if you have them when you open the trap to check.