Toilet Constantly Running Into the Pan
A trickle of water running into the pan long after the flush, often with a faint hiss..
A trickle of water running into the pan long after the flush, often with a faint hiss.
What is actually going on
A trickle of water running into the pan long after the flush, often with a faint hiss.
The realistic causes, in order
A worn flush valve or drop valve seal letting cistern water pass continuously An inlet float valve set too high or failing to shut, so water runs to the overflow Grit or scale on the valve seat, particularly in harder water areas
What we test on site
Whether water is passing the flush valve or the inlet valve — a dye or paper test settles it Fill level against the cistern's marked line Inlet valve type and condition, since some cheap valves fail repeatedly
Questions we get asked
What causes a toilet that keeps running in a bathroom?
A worn flush valve or drop valve seal letting cistern water pass continuously
What normally puts a toilet that keeps running right?
Valve replacement is quick; matching the right valve to the cistern is what stops it repeating.
Is it safe to keep using the system with a toilet that keeps running?
A continuously running toilet can waste a substantial volume of water every day, which matters on a metered supply.