Things You'll Need
The Delta faucet comes in many variations, but one thing most of them have in common is the small metal screen that traps minerals or debris in the water. If you notice your water flow has slowed down or maybe more water coming through one side of the faucet, it is usually time to check the screen on the aerator for debris caught on the surface.
Look at the very end of the faucet where the water comes out. The aerator is the part screwed on to add air to your water flow, softening its impact on dishes and hands.
Unscrew the aerator by twisting it counterclockwise and set it on a towel. Remember where the gaskets go, if you remove them. Locate the small finely meshed screen on top of it. Turn it over and rinse out any debris. Use a toothbrush dipped in white vinegar to scrub away any accumulations. You can also let the aerator sit in the vinegar overnight.
Replace the parts and screw the aerator back into position. Turn on the water and see if the rate of flow is improved. Clean the aerator often if you have hard water or well water.
Wrap the faucet in a rag and use an adjustable wrench to remove the aerator if it gets stuck.