When a sewage pump fails, the consequences are immediate and serious. Facilities can become unusable within hours, health and safety risks escalate quickly, and the environmental consequences of untreated sewage overflow can result in regulatory penalties.
Mawdsleys Pump Services provide fast, expert sewage pump repair for residential, commercial, and industrial clients across the South West and South Wales. Our engineers are available around the clock — call us now, and we’ll advise you over the phone, then get an engineer to you as soon as possible.
Give us a call and we can advise you over the phone or attend ASAP — available 24 hours a day, 7 days a week.
- Call us — our team will take the details and advise you over the phone while we dispatch an engineer.
- On-site diagnosis — an engineer attends site, identifies the fault, and explains what’s needed before any work begins.
- Repair or arrange collection — most sewage pump repairs are completed on-site. Where that isn’t possible, we transport the pump to our Bristol workshop and arrange a temporary hire pump to keep you operational.
- Test and sign-off — once repaired, the system is tested to confirm it’s running correctly before our engineer leaves site.
We carry extensive parts stock and work on all major sewage pump manufacturers including Flygt, Grundfos, KSB, Sulzer, and Wilo, so most repairs can be completed in a single visit.
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.
Stellar on Google
Don't take what we say for granted. Check our Google Reviews for confirmation of the quality we bring.
Precise Communication
Our specialists will give you the full picture and keep you in the loop every step of the way.
Local coverage
We cover sewage pump repairs across the South West and South Wales, typically reaching most sites within a few hours of your call:
Bristol, Cardiff, Newport, Bath, Cheltenham, Gloucester, Weston-super-Mare, Bridgewater, Thornton, Exeter, Salisbury, Southampton, Reading, Swindon, Slough, Oxford, Basingstoke, Newbury, Worcester, Hereford, Yeovil
Accreditations
- Level control or float switch failure — the switch that tells the pump when to run can stick or fail entirely, causing the pump to run continuously or not at all.
- Blockage causing electrical trip — rags, wipes, or debris can jam the impeller, overloading the motor and tripping the circuit breaker.
- Failed non-return valve — a faulty non-return valve allows sewage to flow back into the sump, placing the pump under constant load.
- Pump not starting or not stopping — often caused by a faulty control panel, worn capacitor, or mechanical seizure.
If you notice either of these, call an expert pump engineer or guidance before the situation worsens.
Our team has extensive knowledge of sewage pumping systems and can fix most problems on-site. In cases where the pump needs to return to our workshop, we can arrange a hire unit to keep your system running in the meantime.
- High-level alarm sounding — the system is telling you it can’t keep up. Stop using water and call immediately.
- Toilets backing up or taking longer to clear — a sign the pump is struggling to move waste at normal capacity.
- Foul smell from drains — can indicate a blockage or a non-return valve failure allowing sewage to sit stagnant.
- Unexplained rise in electricity bills — a seized or partially blocked pump works harder and draws more power.
- Unusual noises from the pump — grinding, rattling, or humming that wasn’t there before usually points to a mechanical fault.
Mawdsleys Pumps were called to attend a sewage pumping station at a private residence. Following a checkup from our team, a number of problems were found within the system, including failed internal pipework and valves.
Our team were able to carry out the work on site, and after assembling and installing new pipework and valves, the pump operated as usual again. Following completion of work, the customer took up a maintenance contract with us to prevent a breakdown like this in future.
Sewage Pump Repair FAQs
Both handle dirty water, but they serve different purposes. A sewage pump moves raw sewage from a property to a septic tank or the municipal sewer network. A septic pump (or effluent pump) moves the partially treated liquid from a septic tank to a soakaway or drainage field. If you’re unsure which type of pump you have, our team can help identify it when you call.
The cost of a sewage pump repair depends on several factors: the nature of the fault, whether it can be fixed on-site or needs workshop attention, and the parts required. Labour costs for an attended call-out are charged from the point of despatch. We always explain what work is needed and provide a clear cost breakdown before proceeding. Call us on 0117 954 8030 for guidance — we’re happy to discuss your situation over the phone first at no charge.
Contact us immediately! While you wait for an engineer, stop using any water-based facilities where possible to prevent the sump from overflowing. We can give you specific safety advice over the phone based on your setup.
The high-level alarm is triggered when the wastewater in the sump rises above a safe level — usually because the pump has stopped working or can’t keep up with demand. Silence the alarm, stop using water immediately, and contact Mawdsleys. Do not continue to use toilets or washing facilities while the alarm is active.
This usually means the motor is drawing more current than it should — often because water has entered the motor housing through a worn mechanical seal, or because a blockage is jamming the impeller. Reset the control panel once, but if it trips again, switch it off and call us. Repeated resets can damage the motor further.