A toilet leaking from the base when flushing is most often caused by a failed wax ring seal between the toilet and the floor flange. When that seal no longer seats tight, flush water escapes at the base instead of going down the drain. Movement of the toilet, a low or damaged flange (the pipe collar at the floor), or a hairline crack in the porcelain can also break the seal path. If water only appears during a flush and the supply line and tank are dry, the leak is almost always at the wax seal. Our crews handle this repair frequently in the Lake Worth area, with same-day and 24/7 help available.
Watch for these decision signals:
- Toilet rocks or the base isn’t fully supported: reseat with a new wax ring and proper shims.
- Puddle appears only after a flush while tank/supply stay dry: replace the wax seal.
- Flange is cracked or sits below finished floor: repair or add a spacer before reseating.
- Repeated leaks plus a hairline bowl crack: replace the toilet.
Shut off the stop valve and avoid flushing until a licensed plumber inspects to prevent subfloor damage.
Updated: 2026-06-09
Need help in Lake Worth, FL? Call (772) 567-3100 or book online.