Toilet won't stop running: causes and fix in Sabadell
Resumen rápido
If the cistern won't stop filling, it's almost always the flush valve or float. In Sabadell limescale speeds up wear.
¿Qué está pasando?
When the cistern keeps running, water comes in faster than the float can shut off, or the flush seal lets water escape.
Causas más probables
Worn flush seal
altaThe rubber bell hardens and leaks.
Misaligned or broken float
mediaIt can stick or be punctured.
Limescale-clogged fill valve
mediaLimescale clogs the inlet filter.
Pasos de diagnóstico
- 1
Close the toilet stop valve
There is a small valve behind or under the toilet.
- 2
Lift the cistern lid and watch
If water rises and spills over the overflow it's the float.
- 3
Identify the model and buy the part
Take a photo of the mechanism.
Cuándo llamar a un profesional
Call a plumber if the cistern is wall-embedded or water leaks from under the toilet.
Coste orientativo en Sabadell
45–110 €
Call-out, diagnosis and replacement part.
Contexto local · Sabadell
In Sabadell older buildings have exposed cisterns.
Sabadell is the largest city in Vallès Occidental, mixing dense old quarters (Centre, Creu de Barberà) with 1980s–90s residential estates (Can Llong, Can Rull). In the old town we deal with buildings whose shared old stacks and tight courtyards rule out external insulation, so we strengthen things from the inside. In the estates, high-rise blocks have single-phase panels we have to rebalance before installing AC or an induction hob. Sabadell has a large self-employed population, so we often convert workshops into homes with three-phase wiring that we re-rate to REBT. C-58 jams early, so first slots go to local clients.
- Comarca: Vallès Occidental
- Población: 215.760 hab.
- Parque de vivienda predominante: piso-moderno
- Año medio de construcción: 1970
- Códigos postales: 08201, 08202, 08203, 08204, 08205, 08206, 08207, 08208
Capital del Vallès Occidental, con tejido industrial textil reconvertido y barrios densos como Ca n’Oriac, Torre-romeu y La Concòrdia.
Preguntas frecuentes
How much water does it waste?
Between 100 and 400 litres a day.
Can I do it myself?
Yes for exposed cisterns.
¿Prefieres que vayamos nosotros?
Diagnóstico y presupuesto en Sabadell normalmente el mismo día.
Pedir presupuesto gratisProblemas relacionados en Sabadell
Más sobre Plumbing: leaks, blockages and water
Sources and regulation
- CTE DB-HS 4 — Suministro de agua — Código Técnico de la Edificación