I accidentally punctured a pipe leading to the cold water of a sink in my bathroom. Because of the position of the puncture, I had to replace about 12 linear inches worth of pipe. 1/2 copper piping was used. Sharkbite components were two 1/2 elbows and a 4 inch long 1/2 coupling. After installation, the sink had very low water pressure (hot and cold). No other plumbing in the home has low water pressure and no leaks were detected.

Check the aerator for debris in the screen.

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Originally Posted by ma0641

Check the aerator for debris in the screen.

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I removed any debris in the screen and the pressure remained low.

But you may still have trash blocking the cartridge inlets,
Turn the water off ,op[en up the faucet and remove the cartridge and check and clear the inlets, Now turn the water back on for a few seconds to flush out the supplies. Reassemble and test, Flow better now? Good luck, Tom

The next thing to check would be as Tom suggested, but when you had the aerator out did you run water from the faucet without the aerator in place? How was the flow? If flow was strong then the aerator may be beyond cleaning and need to be replaced... ;)

Otherwise, next step is as Tom said!

Mark