103 Avoca Street, Randwick. Eastern Suburbs plumbers since 1930

Open 24/7 02 9398 1397

Sump, sewer and stormwater pumps

Basement pits and the pumps that empty them. Repairs, replacements, alarms, float switches and planned checks.

McElroy Plumbing ute with the blue and white signwriting
  • Licensed since 1930Six generations, same family
  • 90 years with Master PlumbersRecognised by Master Plumbers NSW in 2025
  • Licence 494711CNSW contractor licence
  • Fully insuredWorkers comp and unlimited common law cover
  • Lifetime guaranteeOn our workmanship
  • Champion Awards finalist2026 Australian Trades Small Business awards

Pits and pumps keep basements dry

Anything below the street has to have its water pumped up and out. Basement carparks, lower ground units and some houses on sloping blocks rely on a pit that collects stormwater or sewage and a pump that empties it.

Nobody notices a pump until it stops. Then the pit fills, and the water has nowhere to go but the basement.

Two plumbers working in a trench next to a block of units

Pump repairs and replacement

We repair and replace sump pumps, stormwater pumps and sewer pumps, and the pipework and valves that go with them. If a pump keeps failing, we look at why: silt and rubbish in the pit, a stuck float, or a pump that's too small for the job.

Alarms and float switches

A float switch turns the pump on when the water rises and off when the pit is empty. If it sticks, the pump either never starts or never stops, and both end badly.

A high level alarm warns you when the water is rising and the pump isn't keeping up. We test, repair and replace floats and alarms so you hear about a problem before the carpark floods.

Planned checks

For strata buildings we can check pits and pumps on a schedule: clear the pit, test the floats and alarm, run the pumps and check the switchboard side is working. It's the cheapest way to avoid an emergency call during a storm, and it can be part of a planned maintenance program.

Common questions

Our basement pump alarm is going off. What should we do?

Call us on 02 9398 1397. The alarm means the pit is filling faster than it's being emptied. We answer 24/7.

Why does our pump keep failing?

Usually silt and rubbish in the pit, a stuck float switch, or a pump that's too small for the water it has to move. We find which it is before replacing anything.

Do you replace sewer pumps as well as stormwater pumps?

Yes. Sump, stormwater and sewer pumps, and the pipework and valves around them.

How often should pits and pumps be checked?

It depends on the building and how much silt gets in, but regular checks are worth it. We can set up a schedule that suits your building.

Can you add an alarm to our pump pit?

Yes. A high level alarm warns you when the water is rising before it overflows.

Where we do pumps and pits work

Based in Randwick and working right across the Eastern Suburbs, including:

Google reviews

What our customers say

4.886 Google reviewsRead them on Google

These plumbers are great. They come on time, they know what they're doing and the prices are fair. We have used them for strata work and I have also used them myself. Highly recommended!

Kim WilsonStrata and home · Google review

We have been using McElroy Plumbing for close to 20 years, their response to our calls has been immediate and the problem fixed promptly in a first class manner and the costs reasonable. We recently had a hot water failure and a new one installed within 24 hrs. We would recommend McElroy for any plumbing job.

Max McLeodCustomer for 20 years · Google review

All the plumbers that have been sent out to our place from McElroy Plumbing are professional, friendly, on time and get the job done. They explain what the issue is and provide solutions. Very proactive, great work and affordable. What more do you want in your plumbers?

Jim VartisHome · Google review

Got a plumbing problem?

Call the Randwick office any time, 24/7. Or send us the details and we'll get back to you with a quote.

No call out fee for homes, strata buildings and businesses alike. No voucher to claim, nothing to mention when you book.

Call nowGet a quote