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Best dirty water pump

Updated: 22 October 2026

You want one amazon.co.uk listing to open, and a reason to leave the rest. The best dirty water pump in this set, for muddy water with a stated 35 mm limit, is the Einhell GC-DP 7835. It leads on that particle size and on 10,114 reviews, not on price and not on the largest flow claim. The rows are on the [Güde dirty water pump comparison](/hub/garden-watering/guede-dirty-water-pump). Peter F. compared those listings on 21 October 2026. There is no laboratory test. A qualifying purchase can earn us a commission at no extra cost to you.

You want one amazon.co.uk listing to open, and a reason to leave the rest. The best dirty water pump in this set, for muddy water with a stated 35 mm limit, is the Einhell GC-DP 7835.

Our top picks

Einhell Einhell GC-DP 3325

Best overall

Einhell Einhell GC-DP 3325
8.8/10about £37.97
View offer
Güde Güde GS 4003 P

Alternative

Güde Güde GS 4003 P
8.6/10about £34.65
View offer
Einhell Einhell GC-DP 7835

Rank 3

Einhell Einhell GC-DP 7835
8.4/10about £50.50
View offer
On this page
  1. 1.Top pick for muddy water
  2. 2.Best value for a modest drain
  3. 3.Listings that are not the pick
  4. 4.When you want the floor almost dry

Top pick for muddy water

The GC-DP 7835 is about £50.50, with 4.2 from 10,114 reviews. The amazon file prints 780 W, 15,700 litres per hour, 8 metres and 35 mm. Skip it for about 10 metres of lift in one stage, and for a fish pond or a permanent installation. Toolstation says it is not for those duties.

Best value for a modest drain

The best-value pick is the Einhell GC-DP 3325 at about £37.97, with 4.4 from 1,050 reviews. It is 25 mm: 330 W, 9,500 litres per hour and 6 metres, for a cooled tub or light silt, not rubble. The listing prints 120 V, which conflicts with 230 V mains, so check the plate. The close pair is on Güde versus Einhell.
Einhell Einhell GC-DP 3325

Testsieger

Einhell Einhell GC-DP 3325
8.8/10about £37.97
View offer

Listings that are not the pick

The 28,000 litres per hour FOTING claim, at about £56.99, has one United Kingdom review and no pump curve. That does not beat 10,114 reviews on a stated 35 mm pump. The stainless FOTING at about £62.99 passes 5 mm. Steel does not make it a mud pump. The Güde at about £34.65 is 25 mm and 5.5 metres, without UK review text, so it is neither the top pick nor the value pick. The order of those checks is on the dirty water pump buying guide.

When you want the floor almost dry

If you need the floor almost dry, look at the Einhell GE-DP 7035 LL at about £68.98, with 4.4 from 551 reviews. It claims about 1 mm left, and a UK review says that mode needs a hard, level base. The amazon file says 7 metres and prints no particle size, while Einhell UK states 35 mm and 8 metres. Ignore vacuum-cleaner bullets on that file. Fitting the hose, which none of these boxes includes, is on how to use a dirty water pump.

Common questions

Which pump is the top pick for muddy water, and who should skip it?
For a stated 35 mm job, the top pick is the Einhell GC-DP 7835 at about £50.50, with 4.2 from 10,114 reviews and an 8 metre head. Skip it if you need about 10 metres of lift in one stage. A Devon reviewer could not do that. Skip it for a fish pond or a permanent installation. Toolstation says it is not for those duties. Watch the float: one UK review says it failed after about a month.
Is the Güde the best because it is the cheapest?
The GS 4003 P at about £34.65 is a 25 mm, 5.5 metre pump. The 4.3 from 271 is not United Kingdom opinion. Those reviews are labelled Germany, and the file has no UK review text. Cheapest matters only after particle size and head already fit. For muddy water the review-volume pick stays the GC-DP 7835. For a modest 25 mm drain, the GC-DP 3325 has the UK reviews, once you have checked the 120 V line.
Is 28,000 litres per hour the best flow?
That FOTING line, at about £56.99, is a claim without a curve, and the file has one United Kingdom review. Catalogue flow is not the flow at maximum head. The GC-DP 7835 prints 15,700 litres per hour and 8 metres, and a Devon user still could not lift 10 metres in one stage. Buy the head and the particle size you can check.
Does stainless steel win?
The stainless FOTING at about £62.99 passes 5 mm, so it loses a muddy-water comparison before the case matters. The GC-DP 9035 N is stainless, states 35 mm, and costs about £70.99 with 4.3 from 575 reviews. That is reasonable if you want 35 mm and steel, and it still trails the GC-DP 7835 on review volume. Steel does not repair a 5 mm intake, and plastic does not disqualify a 35 mm pump.
What if I need the floor almost dry?
The GE-DP 7035 LL at about £68.98 claims about 1 mm left, and a UK review says that mode needs a hard, level base. Silt and a soft pond bed are outside the claim. The amazon file prints 7 metres and no particle size, while Einhell UK states 35 mm and 8 metres. The other pumps here typically leave about 20 to 30 mm. If a mop is acceptable, you do not need the flat-suction price.
Can I leave the GC-DP 7835 in a fish pond?
Toolstation says the GC-DP 7835 is not for fish ponds or permanent installation. Einhell UK’s 35 °C limit and shallow-water start describe a drainage setup, not a circulation pump. Empty the pond, then take the pump out. A summer of moving pond water is a different product. The Güde manual for the GS 4003 P forbids circulation outright, so that cheaper listing is not the workaround.
What fails in UK reviews even on the top pick?
On the GC-DP 7835, one UK review describes the float failing after about a month, and a Devon reviewer could not lift 10 metres though the head is 8 metres. Reviews also say an ordinary garden hose is a poor match. The 4.2 from 10,114 is still the strongest UK evidence here for a 35 mm job. It shows a widely bought drainage pump, not a promise that every float or every tall hose will behave.

Related pages

Pump water out of a cellar

Güde dirty water pump

Dirty water pump buying guide: particle size first

How to use a dirty water pump: hose, float and RCD

Güde vs Einhell dirty water pump: which 25 mm pump

Sources

Public UK sources cover RCD protection, product-safety marking and flood pumping limits. The Güde manual and English product page cover duty limits, residual water and the figures that disagree with the amazon.co.uk listing. The Kärcher page is used only for the point that maximum flow and maximum head are separate. It is not a listing in this table. Listing prices, stars and review counts are the amazon.co.uk lines in the display file. This is not a lab test.

  1. Güde GS 4003 P manual (retrieved 22.10.2026)
  2. Güde GS 4003 P product page (retrieved 22.10.2026)
  3. Electrical Safety First — garden electrics (retrieved 22.10.2026)
  4. Electrical Safety First — BS 7671 411.3.3 (retrieved 22.10.2026)
  5. GOV.UK — adapting a home to flooding (retrieved 22.10.2026)
  6. GOV.UK — help during a flood (retrieved 22.10.2026)
  7. GOV.UK — Electrical Equipment (Safety) Regulations 2016 (retrieved 22.10.2026)
  8. Kärcher SP 16.000 Dirt — flow and head are separate maxima (retrieved 22.10.2026)