Replace the handle, tighten the screw and then turn the water back on.
Leaky spigot handle. A loose retainer nut causes the majority of leaky. But there is another kind of leaking spigot that gives people problems, and the solution is less visibly. If you have a leaking outdoor faucet and the leak is coming from the valve.
Remove the screw on the valve stem holding the faucet washer. Be sure to shut off the water to the spigot prior. The first step to fixing a leaky faucet is to turn off the water going to the faucet.
If it doesn't stop try tightening it a little more if it doesn't stop then. Remove the faucet handle, packing nut and washer. Replace the handle and secure it with the handle’s screw.
In specific conditions, simply fixing the retaining nut under the handle will. The valve stem will look similar to. The same type of leak might also indicate that something is wrong with the cartridge itself.
The water is leaking from behind the handle of the spigot. It seems to be a soft screw, like. Screw the nut back on the stem with the adjustable wrench.
Instead of a new packing washer, wrap a thick layer of teflon tape round the spigot. Just tighten that nut about a 1/4 turn and see if it stops. Today we are addressing a water leak on an outdoor faucet.