5 Common Causes of Your Toilet Leaking at the Base
Water Shutoff Valve Is Leaking
If the tap is working, you’ll hear the water supply cutting off, and the toilet won’t refill. If not, get a plumber to tighten or replace the valve’s seal.
Worn-Out Wax Ring
Loose Toilet Bolts
A good rule of thumb is to clean your entire toilet—not just the bowl—and inspect it for any hidden damage each week. This damage includes crevices like the back of the tank and under bowl’s rim, which often go unnoticed.
If you find a crack in your porcelain, you may be able to temporarily fill it with a plumber’s putty or caulk until you’re able to replace the toilet completely. However, this is just a temporary measure to prevent further leaking, and you should contact your professional plumbing service for further advice.