A submersible pump that’s stopped working needs fast attention — these pumps are almost always installed in a location where failure has immediate, visible consequences. Mawdsleys provides submersible pump repair across Bristol, Bath, Cardiff and the wider South West and South Wales region, covering sewage pumps, sump pumps, water pumps, borehole pumps and well pumps.
Depending on what your submersible pump is used for, the risk of a breakdown varies but is rarely minor:
- Flooding if the pump handles stormwater, groundwater or basement drainage
- Pathogen exposure and health code violations if the pump handles sewage or wastewater
- Costly operational downtime in industrial or agricultural settings, where a halted pump can stop an entire process
Our emergency pump repair service is available 24/7, 365 days a year.
Give us a call and we can advise you over the phone or attend ASAP.
Speed of Service
When your pump fails, you need action—not promises. That’s why we respond fast, and fix it faster.
24/7 Support
Your pump doesn’t care what time it is when it breaks down. Neither do we. We operate 365 days a year.
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Precise Communication
Our specialists will give you the full picture and keep you in the loop every step of the way.
Local coverage
We provide submersible pump repair across the South West of England and South Wales, operating from our base in Bristol:
Bristol, Cardiff, Newport, Bath, Cheltenham, Gloucester, Weston-super-Mare, Bridgwater, Thornton, Exeter, Salisbury, Southampton, Reading, Swindon, Slough, Oxford, Basingstoke, Newbury, Worcester, Hereford, Yeovil
Accreditations
If your submersible pump has stopped working, the cause is usually one of a handful of recurring faults. Here’s what to check and what each symptom typically means:
Pump frequently turning on and off (short cycling) Usually caused by a faulty float switch or level control that’s misreading the water level, or a non-return valve that’s allowing water to flow back into the sump after each cycle. Short cycling puts significant extra wear on the motor and will shorten the pump’s life if left unaddressed.
Pump failing to start, or not turning off A pump that won’t start can be caused by a tripped breaker, a failed control panel, a seized impeller, or motor failure. A pump that won’t turn off usually points to a stuck float switch — left unattended, the pump will run dry and the motor seals will fail.
Failed non-return valve The non-return valve stops water flowing back down into the sump once pumped. A failed valve forces the pump to do the same work repeatedly, increasing energy use and accelerating wear on the motor and seals.
Blockage causing the electrics to trip Debris, rag or solids lodged in the impeller make the motor draw more current than it’s rated for, tripping the breaker as a protective measure. Don’t keep resetting and restarting a pump that’s tripping — this can cause further damage. Isolate the power and call an engineer.
Pump seized Submersible pumps that haven’t run for an extended period — common in standby or infrequently-used systems — can seize. This is often resolved on-site, but if the motor has been damaged by the seizure, a workshop overhaul or replacement may be needed.
What to do: If your submersible pump isn’t working, isolate the power supply if it’s safe to do so and call us on 0117 954 8030. Our engineers can often help you narrow down the cause over the phone before attending site.
Submersible pumps are used across a wide range of applications, and the urgency and approach to repair varies depending on what the pump is doing. We repair all of the following:
Submersible Sewage Pump Repair Sewage pump failure is a health and compliance issue as much as a mechanical one — a failed submersible sewage pump can quickly lead to backed-up toilets, overflow, and exposure to pathogens. We carry out submersible sewage pump repair on all major brands including Lowara, ITT Flygt, Grundfos, TT Pumps, DAB and Pedrollo, with same-day attendance wherever possible. Find out more about our sewage pump services →
Emergency Sump Pump Repair Sump pumps protect basements, cellars and below-ground spaces from groundwater and flood risk. When a sump pump fails, the risk of water ingress and property damage escalates quickly — particularly during heavy rainfall. Our emergency sump pump repair service is available 24/7, with engineers equipped to attend confined and below-ground installations. Find out more about basement and cellar pumps →
Submersible Water Pump Repair Covering clean water supply pumps, borehole pumps and well pumps, submersible water pump repair restores water supply to domestic properties, private water supplies and commercial premises. A failed water pump typically means no water supply at all until it’s resolved, so we prioritise these as urgent call-outs. Find out more about borehole pumps → | Find out more about well pumps →
Submersible Stormwater Pump Repair Stormwater submersibles handle surface water drainage and flood protection — failure during heavy rainfall can lead directly to flooding. Find out more about stormwater and flood pumps →
- High-level alarm sounding.
- Toilets backing up.
- High electricity costs.
- Toilets take longer to clear.
- Foul smell from drains.
- Flooding
- Standing surface water
Submersible Pump Repair FAQs
The price varies depending on:
- The location of the site
- Whether we can fix the problem on-site or we have to remove the pump
- The type of pump
Call us on 0117 954 8030 if your submersible pump has failed — we can provide guidance over the phone, too
Contact us immediately on 0117 954 8030. We can give you advice on what to do — including whether it’s safe to isolate the pump yourself — even before we attend to inspect it.
Submersible pumps cover a wide range of applications, each repaired differently depending on use:
- Sewage pumps — for wastewater and foul drainage
- Sump pumps — for basement, cellar and below-ground water removal
- Water pumps — for clean water supply and pressure delivery
- Borehole pumps — for private water supplies drawn from boreholes
- Well pumps — for private water supplies drawn from wells
- Stormwater pumps — for surface water drainage and flood protection
See our submersible pump repair for every application section above for more detail on each type.
The most common causes are a failed float switch, a tripped breaker due to a blockage, a stuck or worn non-return valve, or motor failure. If the pump has been idle for some time, it may also have seized. Start by checking the power supply and control panel — if those appear normal, call us and we’ll help diagnose the fault over the phone.
Yes. We provide 24/7 emergency sump pump repair across Bristol, Bath, Cardiff and the wider South West and South Wales region. Sump pump failures are treated as priority call-outs given the flood risk they present to basements and below-ground spaces. Call 0117 954 8030 for immediate assistance.