Slow water flow is commonly caused by limescale, a restricted water filter, a partially blocked outlet or another restriction within the water circuit. If the flow has gradually become slower over time, maintenance-related build-up is particularly worth investigating before assuming there is a pump fault.

Yes. Limescale can gradually build up inside heaters, valves and narrow water passages, restricting the amount of water that can pass through the machine. If both coffee and hot-water dispensing have become slower, completing the correct descaling programme is a sensible first step.

Yes. An old, blocked, incorrectly fitted or poorly primed water filter can reduce the supply of water from the tank. If flow becomes noticeably slower after changing the filter, check that it has been correctly prepared and fitted. Temporarily removing the filter can also help determine whether it is causing the restriction.

If hot-water flow is strong but coffee dispenses slowly, the restriction may be within the coffee path rather than the main water supply. An overly fine grind, dirty brew unit, blocked coffee outlets or excessive coffee dose can all slow extraction. Check the brewing system before investigating the pump.

Yes. Coffee ground too finely can create excessive resistance during extraction, causing coffee to drip or pour very slowly. If you've recently changed the grinder setting, adjust it slightly coarser according to your machine's instructions. Make small adjustments and allow several coffees before judging the result.

If you've checked the water tank and filter, cleaned accessible outlets, completed the required cleaning and descaling, and water flow remains unusually slow, further diagnosis may be needed. A weakened pump, restricted valve, flow-meter issue or internal blockage could be preventing the machine from delivering normal water flow.