What causes a toilet to leak from the base when flushing?

A toilet leaking from the base during a flush means water is escaping at the toilet’s base area. We diagnose whether the issue is at the tank, bowl, or base and repair or replace the faulty parts. We service all brands and carry Toto toilets and parts on our trucks for fast replacement. Same-day and 24/7 emergency help is available.

Quick checks:

• Dry the floor, flush once, and watch for seepage at the base.
• Put 2–3 drops of food coloring in the tank; color in the bowl without flushing indicates a leak.

Updated: 2025-12-21

Need help in Thornton, CO? Call (720) 994-7055 or book online.

"He quickly replaced our old leaky toilet." — Daniel V.