Step 6 · Reconnect Water Supply and Test for Leaks

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

With the toilet secured, it's time to restore the water. Reattach the water supply line to the fill valve on the bottom of the toilet tank. Hand-tighten the connector first to prevent cross-threading, then use your adjustable wrench to give it a final quarter-turn to snug it up. Slowly turn the water shutoff valve counter-clockwise to turn the water back on. As the tank fills, use a flashlight to inspect the supply line connection for any drips. Once the tank is full, flush the toilet. Watch carefully around the entire base of the toilet for any signs of water seeping out. Flush it several more times to be certain the wax seal is holding. If there are no leaks at the supply line or the base, the repair is complete.