
How to Fix a Leak Under Your Kitchen Sink
To fix a leak under your kitchen sink, find the source (faucet, drainpipe, water supply valve, supply lines, or sink strainer), tighten loose connections by hand, and replace worn parts as needed. If the leak persists or supply lines are over five years old, call a plumber. A kitchen sink leaking in your home is a surefire way to waste water and drive up your utility bill.



