Why does my toilet keep running after I flush it?

A running toilet is typically caused by a faulty flapper, chain adjustment issue, or water level problem in the tank - all relatively simple fixes that most Ottawa homeowners can handle themselves.

The most common culprit is the rubber flapper at the bottom of your toilet tank not sealing properly against the flush valve seat. Over time, flappers can warp, crack, or develop mineral buildup from Ottawa's hard water, preventing them from creating a tight seal. When water continuously leaks from the tank into the bowl, the fill valve keeps running to maintain the water level.

Chain problems are equally common - if the chain connecting the flush handle to the flapper is too long, the flapper won't lift fully during flushing. If it's too short, the flapper can't close completely. The chain should have just enough slack to allow the flapper to seat properly while still lifting it fully when you flush.

Water level issues can also cause continuous running. If the water level in your tank is set too high, water will continuously flow into the overflow tube. In Ottawa homes, this is often exacerbated by our mineral-rich water, which can cause the float or fill valve mechanism to stick or malfunction over time.

Ottawa-specific considerations include our hard water, which accelerates mineral buildup on toilet components. Many local homes built in the 1970s-80s may have original toilet parts that are simply wearing out. During Ottawa's cold winters, if your bathroom gets chilly, rubber components can become more brittle and prone to failure.

DIY vs Professional Help: Most toilet running issues are perfect DIY projects requiring only basic tools and about $10-30 in parts from any Ottawa hardware store. However, if you discover cracks in the toilet tank, need to replace the entire fill valve assembly, or if water is leaking from the base of the toilet, these issues require more expertise and potentially a full toilet replacement.

Next Steps: Start by lifting the toilet tank lid and identifying which component is causing the problem. Most parts are available at Home Depot, Lowe's, or local Ottawa plumbing supply stores. If you're uncomfortable with the repair or discover more extensive issues during your inspection, a qualified plumber can typically resolve toilet problems quickly and affordably.