Water pressure can drop in a Calpe property for several reasons, including a hidden leak, limescale build-up, blocked filters, faulty valves, pressure regulator problems, hot water system faults or an issue with the mains water supply. If the pressure drops suddenly or affects the whole property, it is best to investigate the cause rather than waiting for the problem to get worse.
For help with low water pressure, pipework checks and plumbing repairs, contact 100% Plumbing through our general plumbing services in Calpe and the Costa Blanca page.
Common causes of low water pressure in Calpe homes
Low water pressure can affect taps, showers, toilets, appliances, irrigation systems or hot water supply. In villas, apartments, rental homes and commercial properties across Calpe and the Costa Blanca, the cause may be inside the property or connected to the external supply.
Common reasons for a drop in water pressure include:
- Hidden leaks behind walls, under floors or outside the property.
- Limescale build-up inside taps, shower heads, filters or pipework.
- Partially closed stopcocks or isolation valves.
- Blocked filters, aerators or pressure-reducing valves.
- Faulty pressure regulators or pumps.
- Problems with a boiler, water heater or hot water cylinder.
- Corroded, damaged or ageing pipework.
- Several fixtures or appliances being used at the same time.
- Issues with the public mains water supply.
- Work being carried out on the local water network.
If only one tap or shower has low pressure, the issue may be local to that fixture. If the whole property has poor pressure, the cause may be a leak, supply issue, valve problem or wider plumbing fault.
Could low water pressure be caused by a hidden leak?
Yes. A sudden drop in water pressure can be a warning sign of a hidden water leak, especially if it is combined with damp patches, mould, musty smells, water stains, wet areas outside the property or a higher-than-usual water bill.
Hidden leaks can occur behind walls, under floors, inside ceilings, around bathrooms, kitchens, terraces, gardens, pool equipment areas or hot water systems. If you suspect this may be the cause, a professional plumber can help locate the problem and advise on the safest repair.
You can learn more about related plumbing support on our services de plomberie générale page. If water is spreading quickly, dripping through a ceiling or close to electrical areas, call the 24h emergency help line on 607 415 520 or visit our emergency plumbing page.
Le calcaire peut-il réduire la pression de l'eau ?
Yes. Limescale is a common cause of reduced flow in hard water areas. Over time, mineral deposits can build up in taps, shower heads, filters, valves, boilers, water heaters and narrow sections of pipework.
Signs that limescale may be affecting your water pressure include:
- Weak flow from showers or taps.
- White deposits around taps and shower heads.
- Shower heads blocking repeatedly.
- Hot water taking longer to arrive.
- Noisy water heaters or boilers.
- Reduced efficiency from appliances.
- Repeated issues with filters or valves.
For homes where limescale keeps causing problems, 100% Plumbing can advise on water treatment solutions and plumbing maintenance.
What should you check before calling a plumber?
Before calling a plumber, there are a few safe checks you can make:
- Check whether the pressure problem affects one tap or the whole property.
- Make sure the main stopcock is fully open.
- Check if any isolation valves have been partly closed.
- Remove and rinse simple tap aerators or shower heads if they are easy to access.
- Ask neighbours if they are also experiencing low pressure.
- Check whether your water heater or boiler is showing an error or pressure issue.
- Look for visible leaks, damp patches or wet areas outside.
- Check whether the water meter moves when all taps are off.
Do not dismantle valves, pumps, boilers or pressure regulators unless you are qualified to do so. If the cause is not obvious, professional inspection is safer.
When is low water pressure urgent?
Low water pressure should be treated as urgent if it happens suddenly, affects the whole property, is linked to a visible leak, causes loss of hot water, or appears together with damp, flooding or water damage.
Call a plumber urgently if:
- The pressure drops suddenly throughout the property.
- You hear water running when all taps are off.
- Damp patches or water stains appear.
- Water is leaking near electrics.
- A boiler or water heater is losing pressure repeatedly.
- A rental property, business or occupied villa cannot be used normally.
- You suspect a burst pipe or hidden leak.
For emergency situations, call 100% Plumbing’s 24h emergency help line on 607 415 520.
What if the issue is with the public water supply?
If neighbours also have low pressure, or the problem appears to be outside your property boundary, the issue may be related to the public mains supply. In that case, you may need to contact Aguas de Calpe, which lists a 24-hour breakdown service for water supply faults in Calp.
If the issue is inside your property, such as a leak, valve, pipework, pressure regulator or hot water system fault, 100% Plumbing can help inspect the system and recommend the right repair.
Low water pressure help in Calpe and the Costa Blanca
100% Plumbing helps homeowners, landlords, holiday rental owners and businesses in Calpe and across the Costa Blanca with low water pressure, hidden leaks, limescale problems, pipework faults, hot water issues and related plumbing repairs.
The company is based in Calpe and serves customers across the Costa Blanca, providing plumbing, hot water, gas, pools, solar power and related services for residential and commercial properties.
Low water pressure in your Calpe property? Contact 100% Plumbing through our services de plomberie générale ou traitement des eaux pages. For urgent leaks or sudden pressure loss, call 607 415 520.
