FOR CONTRACTORS

Water Pumps for Construction & Civil Engineering

The right pump for a construction site is the one matched to the water, the lift and the power on site, not the one with the biggest flow figure. For most groundworks that means a submersible dewatering pump that tolerates grit and runs ...

Products in range 30
From £270£225 (Exc VAT)
Delivery Next working day
Support Engineer-led
30 products
EVAK 4.89

EVAK Residox 400 Manual Puddle Pump | 213 L/min

  • Flow rate 250 l/m, suited to domestic and light commercial flooding
  • Removes water to approx 1 mm, 50mm outlet, 11 m head
  • Stainless steel build, cast iron housing, Hytrel impeller
  • Surface-safe rubberised base for finished floors
  • 110V or 230V, no priming required, 2mm free passage
£375.00 £312.50 (Exc VAT)
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Tsurumi Pumps 5.0

Tsurumi LB480 Contractor Pump – Manual & Automatic

  • Compact 0.48kW contractor pump, ideal for site drainage and confined-space dewatering
  • Lightest in the LB range at just 10.4kg, easy to carry and reposition around site
  • Available in Manual or Automatic (pendant float or sensor) versions
  • Top-discharge cooling allows running for extended periods with little or no water
  • Pumps up to 225 L/min to 11m head
£390.84 £325.70 (Exc VAT)
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Tsurumi Pumps

Tsurumi LB800 Contractor Pump – Manual & Automatic

  • Heavy-duty 0.75kW (800W) contractor pump for demanding site drainage
  • Higher output than the LB480, up to 310 L/min and 15m head
  • Available in Manual or Automatic (pendant float or sensor) versions
  • Top-discharge design runs reliably for extended periods with little or no water
  • Compact and portable at 13kg, with selectable horizontal or vertical discharge
£548.40 £457.00 (Exc VAT)
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FPS Engineered™

High Flow Petrol Water Pump Kit | Honda WB30, 1,100 L/min

  • Around 1,010 L/min through the kit, roughly 60,000 litres an hour at a 2m lift
  • Both hoses supplied, 10m reinforced for suction and 10m layflat for delivery, both 80mm
  • 80mm throughout loses under 3m of head across the full run, so you keep 92% of rated flow
  • Honda GX160, 5.5hp, with Oil Alert, handling solids to 6mm
  • Suction lift to 7.5m, no power supply needed
£730.00 £608.33 (Exc VAT)
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FPS Engineered™

Petrol Flood & Site Pump Kit | Honda WB20 - 2 Inch

  • 474 litres per minute through the kit. Around 28,000 litres an hour at typical lift.
  • Both hoses included. 6 m reinforced for suction, 30 m layflat for reach. The pump alone comes without them.
  • Cast iron volute and impeller. Abrasion resistant, so silt and sand do not finish it.
  • Honda GX120 with Oil Alert. The commercial 4-stroke, in a tubular steel crash frame.
£557.99 £464.99 (Exc VAT)
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FPS Engineered™

Site Drainage Pump Kit | EVAK Drainox 400 & 750

  • 190 to 257 litres per minute through the supplied hose. Choose the pump to match your lift.
  • Stainless steel and cast iron build. Strainer base, cover and handle in stainless, FC20 cast iron housing.
  • Automatic operation. Starts and stops with the water, so it can be left working in an excavation.
  • 5 mm free passage. Abrasion-resistant Hytrel vortex impeller for grit and site water.
£439.49 £366.24 (Exc VAT)
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FPS Engineered™

Silty Trench Dewatering Pump Kit | EVAK Trenchman 400

  • Built-in agitator. Stirs settled silt back into suspension so it can be pumped away, not left behind.
  • 15 mm free passage. Three times the Drainox, for fines, grit and small stones.
  • Around 189 litres per minute through the supplied hose. Roughly 11,300 litres an hour at site lift.
  • 20 m of 50 mm layflat included. Automatic float control, so it works while you do.
£366.49 £305.41 (Exc VAT)
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FPS Engineered™

Contractor Dewatering Pump Kit | Tsurumi LB480

  • Around 190 litres per minute through the supplied hose. Roughly 11,400 litres an hour at site lift.
  • 20 m of 50 mm layflat included. Enough reach for most excavations, and it rolls down to almost nothing.
  • 110 V or 230 V. Site transformer or building mains, identical kit either way.
  • Tsurumi durability. The pump hire fleets keep buying, from a maker in business since 1924.
£428.33 £356.94 (Exc VAT)
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Buying guide

Pumps for construction by job.

Keeping an excavation or trench dry

General dewatering of digs, trenches, foundations and manholes. Submersible contractor pumps that run continuously and handle grit and small stones.

Featured: Tsurumi LB480, LB800 and LB1500; EVAK Drainox 400/750 and Drainox 1500; Tsurumi HS2.4S; Tsurumi OM5 and HSD2.55S. See site drainage and dewatering pumps.

Silty and muddy water

Where fines settle and block a standard intake, you need an agitator or a pump built for abrasive water.

Featured: EVAK Trenchman 400 (built-in agitator, 15 mm passage); BBC Semisom 262 and 635; Arven Regal 304 stainless; Arven Mizar VOX. A matched Silty Trench Dewatering Kit is on the way.

Clearing to a low level

Site puddle and flood clearance to a few millimetres off a slab or in a shored pit.

Featured: Stream SPK530; Stream SPK450A (110V); EGO 500 GI and GI LS; Tsurumi LSC2.75S; EVAK Residox 750. See puddle pumps.

Moving high volumes fast

When a lot of water arrives at once.

Featured: APP HD-15 (830 L/min); Tsurumi HS3.75S; EVAK Drainox 1500; Tsurumi NK and KHL-20 high head. See high-flow and high-head pumps.

Where there is no mains power

Petrol and diesel pumps that sit on the bank and draw through a suction hose.

Featured: Honda WB20, WB30 and WX10; Tsurumi TE, TEF/TEW, TDS and TD petrol; DryMax diesel. See engine-driven pumps.

110V site supply

Transformer-fed pumps for 110V sites, same kit otherwise.

Featured: Stream SPK450A; Tsurumi LB480 and 50PNI2 in 110V. See 110V pumps.

Site kits

Matched site kits, with the pump, hose, strainer and fittings sorted for the job, are being built for construction: a Contractor Dewatering Kit (Tsurumi LB480), a Silty Trench Kit (EVAK Trenchman) and a High-Flow Dewatering Kit (APP HD-15). In the meantime, see the pump kits range.

Why contractors buy from us

We are engineer-led and hold UK stock for next-day. We supply hire-grade brands such as Tsurumi, carry 110V and 230V across the contractor range, and keep spares. If the lift, distance or ground conditions make the job harder than a catalogue pick, our team will size it with you, and our engineering review service covers the projects that need calculations.

Many of these are FPS Engineered™ combinations, specified and matched by our team. Learn more about FPS Engineered™.

Common questions

Frequently asked questions.

What pump do I need to dewater a trench?

A submersible contractor pump sized to the inflow, not the headline maximum, and one that tolerates grit. If the water is silty, choose a pump with an agitator such as the EVAK Trenchman. See site drainage and dewatering pumps.

How do I pump silty or muddy water without blocking?

Use an agitator pump that keeps fines in suspension, such as the EVAK Trenchman, or an abrasion-resistant pump built for gritty water. A standard clean-water intake will clog as silt settles.

110V or 230V on site?

110V for transformer-fed sites, 230V where there is building mains. Many contractor pumps are offered in either voltage with identical performance. See 110V pumps.

Petrol or electric for a site with no power?

An engine-driven pump that sits on the bank and draws through a suction hose, sized by its outlet. See engine-driven pumps.

How much flow do I need to keep a dig dry?

Match the pump to the rate the water arrives, not the biggest flow figure on the box. Vertical lift and hose length reduce the delivered flow, so allow headroom or check the duty.

Should I buy or hire?

Buy where a pump earns its keep across enough jobs; hire for one-off peaks. We supply spares so a bought pump keeps working.

Advice & insight

Related guides.

All advice articles

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