A leaky faucet may be annoying, but a leak under the sink is even worse. It's not uncommon for sediment to clog the P-trap, building pressure and causing leaks. Fortunately, you can easily fix a leaky P-trap without ever calling a plumber. First, place a bucket underneath the pipes to catch any trapped water. Then, loosen the nuts on the pipe and remove the P-trap. Dump out the sediment that's settled and reattach the pipe. Now your sink should be leak-free!