The best Einhell dirty water pumps, compared.
Top pick: Einhell GE-DP 18/25 LL Li Best value: Einhell GC-DP 3325 – Best value in this set: score 74 at about £37.97, with 4.4 from 1,050 reviews, when you already have a hose. The listing prints 120 V, so check the plate. Updated 22.10.2026.
A dirty water pump is a submersible for sandy or muddy water on a short job: a cooled hot tub, a pond, a cellar or an excavation. It is not a sprinkler pump and not a certified sewage pump. You recognise a suitable one by the particle limit, usually 25 mm or 35 mm, the maximum head, and the residual water the listing allows. Maximum litres per hour and maximum head do not happen together. Measure the vertical lift, allow for hose losses, and treat the flow as the volume at a modest lift. Ordinary pumps leave roughly 20 mm to 90 mm. A claim near 1 mm needs a hard, level base. A mains model needs a dry BS 1363 plug and 30 mA RCD protection. An 18 V body is for a site with no socket, and the battery is separate. Published limits sit at 35 °C, so spa water has to cool, and the pump is not for fuels or a permanent install. The checks are in the [dirty water pump buying guide](/hub/garden-watering/einhell-dirty-water-pump/sub/einhell-dirty-water-pump-buying-guide).
A dirty water pump is a submersible for sandy or muddy water on a short job: a cooled hot tub, a pond, a cellar or an excavation. It is not a sprinkler pump and not a certified sewage pump.
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Personal buying guide
Question 1 of 2
Where is the water?
This 18 V GE-DP 18/25 LL Li is sold as the body only, listed at 7,000 L/h, 5 m and 0.5 bar, with a 1 mm clear-water claim, solids to 25 mm and immersion to 4 m. A UK reviewer lifted rain water about 5 feet and used it in small manhole chambers. At £89.99 you still buy a Power X-Change battery and charger, and the hose is not in the box. The same review puts working pressure at about 0.5 to 0.8 bar, which was not enough for a decent jet from a water butt. It will not stand in for a mains pump when you want sprinkler pressure. The 4.6 score comes from 180 reviews, and the UK notes in the file do not describe a broken unit.
Pros
Cons
Best for: Small chambers, flood transfer and rain water where you already own an 18 V Power X-Change battery.
Less suitable: Sprinklers, a water-butt jet, or a buyer who has no spare 18 V battery.
Specifications
Common questions
Does £89.99 include a battery?
No. The title and bullets say the body only. You need one 18 V Power X-Change battery and a charger, sold separately.
Can it run a garden sprinkler?
One UK review says the pressure, about 0.5 to 0.8 bar, is not enough for a decent jet from a water butt.
How low will it pump?
The bullets say it drains down to 1 mm and can pass foreign bodies up to 25 mm, with a 5 m lead and 4 m immersion.
Across 1,050 amazon.co.uk reviews rated 4.4, the 330 W GC-DP 3325 emptied one hot tub of about 800 litres in 25 minutes on 25 mm hose. The listing gives 9,500 L/h, a 6 m head and solids to 25 mm, with an adjustable float for automatic or manual running. At £37.97, with that review count, it is the best value full-size pump in this set when you already have a hose, because the box holds the pump, a 90° elbow and a universal adapter. Reviewers say the last 20–30 mm stays behind, and one discharge at a 5 m head produced only a trickle. The float holder is called flimsy and sometimes needs a nudge before the pump starts. The technical line prints 120 V, so check the rating plate before you use a UK 13 A socket. That line is not proof the pump is a US model.
Pros
Cons
Best for: Hot tubs, ponds and bath water into a butt, where a short hose and a few centimetres left behind are acceptable.
Less suitable: A dry floor down to the last 20 mm, a 5 m lift at full flow, or a buyer who has not checked the 120 V line.
Specifications
Common questions
How large a particle does the GC-DP 3325 listing allow?
The item highlight says foreign objects up to 25 mm. UK reviews still say leaves are mostly kept out by the intake.
Does the price include a hose?
No. The included parts are the pump, a 90° elbow and a universal adapter. Reviewers say the hose is extra, and several use 25 mm tubing.
What voltage does this amazon.co.uk listing state?
The technical line says 120 volts. Family data for this type is 230 V, so check the rating plate. The 120 V line is not proof of a US pump.
The 700 W GE-DP 7035 LL lists 16,000 L/h, a 7 m head, a float, a 10 m cord and residual water down to 1 mm, and UK reviewers have used it on sandy well water, a basement and a large pool. One pool empty still left about 2 cm. The 1 mm setting blocks unless the pump stands on a hard base, and the bottom plate is described as flimsy. Case joints leaked for one buyer, and one email to customer service went unanswered. The first bullets on the listing describe a 1,250 W wet-dry vacuum and contradict model 4181570, so they are not treated as pump specifications. No hose is included at £68.98. The rating is 4.4 from 551 reviews.
Pros
Cons
Best for: Floods, hot tubs and pools when the pump can sit on a hard base and a couple of centimetres left behind is acceptable.
Less suitable: A soft or muddy floor if you need the 1 mm claim, or a buyer who takes the vacuum-cleaner bullets as the specification.
Specifications
Common questions
Will it really leave only 1 mm of water?
The highlight claims 1 mm. One UK review says the bottom plate is flimsy and the inlet blocks unless the pump sits on a hard base. Another pool empty left about 2 cm.
Why do some bullets mention a vacuum cleaner?
The first bullets describe a wet-dry vacuum. They contradict model 4181570, the item type and the UK pump reviews, so they are not treated as specs.
Is a hose included?
No. The box list is the pump, a 90° connection and a universal connection.
The GE-DP 18/25 Li Solo is the non-flat 18 V pump listed at 7,500 L/h, 5 m and 0.5 bar, with ECO and BOOST modes. One reviewer drained a Lay-Z-Spa on about half a 4 Ah battery, and others use it on a pond where there is no nearby socket. The £99.98 price is the body only: battery, charger and hose are separate, and one pond job could not start until a flat hose was bought. Other buyers say a single pack runs out quickly and that 4 Ah is a minimum. There is no 1 mm residual claim in this file. One unit arrived looking used. A listing bullet about a tyre inflator does not belong to this pump and is ignored here. The rating is 4.4 from 163 reviews.
Pros
Cons
Best for: A hot tub or pond away from a socket, if you already own at least one 4 Ah Power X-Change battery and a flat hose.
Less suitable: Flat suction to 1 mm, a long empty on a single small battery, or a buyer who expects the hose in the box.
Specifications
Common questions
Is this the flat-suction cordless model?
No. The product style line says non-flat suction. A 1 mm claim is not in this file.
What battery do reviewers use?
One drained a Lay-Z-Spa on about half a 4 Ah pack. Others say one pack runs out quickly and that a 4 Ah pack is a minimum.
Is a hose included?
No. A UK reviewer bought a flat hose after the pond job could not start without one.
The amazon.co.uk bullets claim 28,000 L/h, an 11 m head and 38 mm solids from this 900 W thermoplastic FOTING, with a 10 m cord, immersion to 7 m and residual water down to about 3.8 cm. The float is described as switching on at about 17.5 cm. Of 80 reviews at 4.4 stars, the file contains one United Kingdom review, and that buyer said it moved a large volume quickly and did the job. Hoses, pipes and circlips were not in the box and had to be ordered. No pump curve sits beside the 28,000 L/h figure, and no voltage is printed, so both stay unverified listing claims. With a single UK review, you have almost no picture of how often the pump fails.
Pros
Cons
Best for: A one-off large-volume move if you treat 28,000 L/h as a listing claim and buy the hose fittings yourself.
Less suitable: Anyone who wants a voltage on the page or a UK review sample large enough to judge failures.
Specifications
Common questions
Where does 28,000 litres per hour come from?
It is the flow figure in the amazon.co.uk bullets and spec line. There is no pump curve beside it, so it stays a listing claim.
What did UK reviewers say?
The file has one UK review. It says the pump did the job and that hoses, pipes and circlips must be ordered separately.
Is the voltage stated?
No voltage line is in the file, so the cell stays blank.
This 900 W FOTING has a 304 stainless housing and lists 13,000 L/h and a 9 m head, yet the base filter only claims solids to 5 mm. Residual water is claimed at about 1 cm, while a fish-pond review left about 50 mm. A construction review called the pump decent until a trapped float let it run dry and a seal then had to be replaced. One buyer used two pumps in five to six months. It did not have enough force for a sprinkler fed from 3 m down through a 5 m hose. The hose is bought separately, voltage is not printed, and one review notes there is no switch beside the mains plug. The float is said to switch on at about 17.8 cm. The rating is 4.4 from 60 reviews. It is not a sewage pump and not a pump for fish.
Pros
Cons
Best for: Pools and relatively clean water where debris stays under 5 mm and the float can swing free.
Less suitable: Leaves, stones or 35 mm solids, a sprinkler from several metres down, or a site where the float can snag.
Specifications
Common questions
Can it pass the same debris as a 35 mm pump?
No. The bullet says the base filter passes up to 5 mm solids, even though the title says dirty water.
Is a hose included?
No. UK reviews say you buy the hose separately.
What happens if the float is trapped?
One construction-site review says a trapped float let the pump run dry, and a seal then had to be replaced.
This 900 W stainless GC-DP 9035 N lifted water about 3 m through roughly 20 m of hose from a waste-treatment pit and shifted muddy soakaway water. The listing states 18,000 L/h, a 9 m head, 35 mm solids and immersion to 5 m, and one reviewer passed stones of about 30 mm with a large hose fitted. Flow is poor when the pump is asked to work at that 9 m maximum. It draws air at about 2 inches, so it is not a tool for a shallow film of water even though the title says 2-in-1. Stones block the outlet if the housing sits on gravel. Across 575 reviews at 4.3 stars, several buyers say a unit lasted months, or about a year, and then stopped, including a third replacement. At £70.99 the hose is not included.
Pros
Cons
Best for: Muddy excavations, soakaways and waste pits where you can keep the intake off stones and the lift is well under 9 m.
Less suitable: Shallow puddles, a full 9 m lift, or a buyer who expects a hose in the box.
Specifications
Common questions
How deep can this pump be immersed?
The bullets say a maximum immersion depth of 5 m, with a 9 m delivery height and 35 mm foreign bodies.
Does the title’s 2-in-1 claim include flat suction?
The title says 2-in-1. The bullets do not describe a flat-suction mode. A UK review says it is not for shallow water and draws air at about 2 inches.
Is a hose in the box?
No. Included parts are the pump, one 90° angle and one universal connection. Reviewers fitted their own hose.
Across 10,114 amazon.co.uk reviews at 4.2 stars, owners use the 780 W GC-DP 7835 on underground tanks, a pond of roughly 2,000 litres, grey water and a flooded driveway. The listing gives 15,700 L/h, an 8 m head, 35 mm solids, a float and a cable rewind, at £50.50. It is the top pick in this table because it carries the highest score and by far the largest UK review sample. One reviewer in Devon could not lift water 10 m in one stage and split the job into two. Stones, plastic, string and hair clog the pump, and a stone cracked one casing. Two UK deliveries arrived with a two-pin plug rather than a BS 1363 plug. A float that failed after about a month, and a pump that stopped after about eight months, both appear in the sample.
Pros
Cons
Best for: Cellars, ponds and emergency sumps within the 8 m head, if you check that the plug is a UK 13 A plug.
Less suitable: A single lift of 10 m, or water full of stones that can crack the housing.
Specifications
Common questions
Have UK buyers received a UK plug?
Two UK reviews say the pump arrived with a two-pin plug. That is a fault in the supply they received. Do not cut the plug off.
Will it lift water 10 metres?
The listing maximum is 8 m. One Devon reviewer could not raise water 10 m in a single stage and used two stages.
What blocks it?
UK reviews mention stones, plastic, string and hair. Some owners open the pump to clear it. A stone cracked one casing.
Across 2,607 amazon.co.uk reviews at 4.2 stars, this 900 W thermoplastic FOTING emptied a 2.5 m by 1.5 m pool in about 20 minutes in manual mode, and a 12 ft pool of about 9,000 litres in just over an hour. The listing states 14,000 L/h, an 8.5 m head, 35 mm solids, a 10 m cord on 230 V and residual water down to 3 cm. One hot tub still held about 6 cm, and another pump stopped halfway through the empty. Breaker trips, loose screws and a trip after about eight months are in the UK sample, and one reviewer could not find customer service. The float has no park position for continuous running, which that buyer missed from earlier Einhell pumps. At £46.99 the hose is extra, and one delivery had no instructions and no check valve.
Pros
Cons
Best for: Hot tubs, paddling pools and a bowser-to-tank lift when you can run it in manual mode and tolerate a few centimetres left.
Less suitable: Unattended float duty, a dry base, or a buyer who needs seller support after a breaker trip.
Specifications
Common questions
How much water do UK reviews say it leaves?
The bullet says down to 3 cm. One hot-tub review left about 6 cm that the pump would not take.
Does the float have a park position?
One UK review says it does not, unlike Einhell pumps they had used, so continuous running is harder to set.
What failures show up in UK reviews?
Breaker tripping, loose screws, a pump that stopped during a hot-tub empty, and another that tripped after about eight months.
UK reviewers used this 550 W FOTING to empty a 2,500 litre underground rainwater tank, and one hot tub was gone in about 20 minutes once a separate hose was fitted. On 1 1/4 inch pipe, another buyer filled a 1,000 litre IBC in just over 10 minutes, which sits closer to the 16,000 L/h claim than a kinked layflat hose. The page also lists an 8 m head, 35 mm solids, residual water down to about 3.8 cm and a float that switches on around 17.5 cm. The same listing prints 1.5 horsepower beside 550 W, and those two figures do not match. Several owners report failure within a few months, including one unit that died after about seven months of light use. The leaflet left the float and the on/off points hard to follow. The sample is 4.2 from 62 reviews.
Pros
Cons
Best for: A rainwater tank, pond or pool pit when you fit your own wide hose and accept a small review sample.
Less suitable: A pump you need to last beyond a few months, or a job that depends on the horsepower line.
Specifications
Common questions
What solids does this FOTING listing claim?
The bullets say up to 3.5 cm, and residual water down to about 3.8 cm.
Is a hose included?
No. Reviewers bought a layflat hose separately, and one notes that layflat hose kinks.
Does the listing give one consistent power figure?
It says 550 W and also 1.5 horsepower. Those two lines do not match. Both are only what the listing prints.
This BTRUI pump weighs about 600 g, is about 50 mm across and 180 mm tall, and is listed at 30 L/min with a 5 m head. The table shows that 30 L/min line as 1,800 L/h so the flow row uses one unit. The title also prints 500 GPH, which is not the same figure. UK reviewers dropped it into a 45 litre drum to water flower beds and used it while emptying footings. At £25.99 neither the Einhell 18 V battery nor a hose is included. One review says the outlet is 19 mm, so a usual 12.5 mm or 13 mm garden hose does not fit. The switch is called very basic. Particle size is not stated, and the UK reviews that were read do not describe a dead motor. Treat it as a mini transfer pump, not a basement flood pump, on a rating of 4.2 from 61 reviews.
Pros
Cons
Best for: A rain butt, a small drum or shallow footings when you already own an Einhell 18 V battery and a 19 mm hose.
Less suitable: A flooded basement, 35 mm debris, or a standard 13 mm garden hose with no adapter.
Specifications
Common questions
Will a normal garden hose fit?
One UK review says the outlet is 19 mm, not the usual 12.5 or 13 mm hose, so a different hose was needed.
Is a battery included at £25.99?
No. The title says the pump is for an Einhell 18 V battery and that no battery is supplied.
What flow does the listing state?
30 litres per minute, shown in the table as 1,800 L/h. The title also says 500 GPH, which is not the same figure. Head is 5 m. It is a mini pump, not an 18,000 L/h mains unit.
The TPDL pump weighs about 200 g and measures about 10 × 8 × 5 cm, with 120 W on the listing and a lead of 4.5 m in the title so the switch can stay dry. The bullet says that switch must not go under water. Among 20 reviews at 4.2 stars, one buyer praises the flow and the filter, and another UK buyer returned a unit that did not pump. The title also says oil suction pump, but the reviews that were read describe water, and oil use is not shown. The file prints both 12 V and an Einhell 18 V fit, so match the battery you own rather than treating those as one specification. A claim that a 4 Ah pack runs for more than four hours is listing text, not a timed test. The £25.99 price does not include a battery.
Pros
Cons
Best for: Light transfer from a pool cover, rain barrel or small pond if the switch stays dry and you accept a 20-review sample.
Less suitable: Basement flooding, dirty water with large solids, or anyone who needs a stated flow and a single voltage.
Specifications
Common questions
Is this a full-size dirty water pump?
No. It weighs about 200 g and measures about 10 × 8 × 5 cm. The title also says oil suction pump. Treat it as a miniature transfer pump. Oil use is not shown in the reviews that were read.
Can the switch go under water?
The bullet says the switch should not be immersed. The lead is there so the switch stays out.
Did UK buyers get it working?
One review praises the flow and the filter. Another says it did not work and was returned. The sample is 20 reviews at 4.2.
The twelve listing scores come from amazon.co.uk stars and review counts saved on 19 October 2026. They are not a laboratory test and not a measured flow. The top pick and the best value follow the display awards. The weights below are the order in which the listings were read. They sum to 100. A two-pin plug is reported where UK reviews mention one. This page does not tell you to cut a plug off.
Particle size
25%25 mm suits leaves and light silt. 35 mm suits a muddier job. A 5 mm filter is a different tool. String, hair and stones can still block or crack a housing.
Head and flow
25%Vertical lift plus hose losses comes before the litres-per-hour line. Maximum flow and maximum head do not happen together. A flow figure with no pump curve stays a listing claim.
Residual water
20%Ordinary models leave roughly 20 mm to 90 mm. A claim near 1 mm is flat suction and needs a hard, level base. A 2-in-1 title is not treated as flat suction unless the bullets say so.
Supply and plug
20%A mains pump needs a dry BS 1363 plug and 30 mA RCD protection. An 18 V Solo body does not include the battery or the charger. A miniature pump is not read as a cellar tool.
Review sample
10%The display score uses the amazon.co.uk star line and the review count only. A large UK sample outweighs a higher star line from a small file.
Choose by particle size, then head, then how much water is left, then the plug. A high litres-per-hour line is the volume at a modest lift, not at the maximum head. Prices below are amazon.co.uk lines from 19 October 2026.
A dirty water pump is a submersible for intermittent drainage of sandy or muddy water. The published particle limit is the first check. A 25 mm limit suits leaves and light silt. A 35 mm limit suits a muddier job. A listing that claims only 5 mm solids is a different tool, even when the title says dirty water. String, hair and stones still block or crack housings in UK reviews, so the millimetre figure is what the maker prints, not a promise that rubble will pass.
Maximum flow and maximum head do not happen together. The GC-DP 7835 lists 8 m. A Devon review could not lift 10 m in one stage. The 28,000 L/h line has no pump curve beside it.
Published pressure on these Einhell models is about 0.5 bar to 0.9 bar. A UK review put one 18 V body at about 0.5 to 0.8 bar, too weak for a water-butt jet. Hoses, clips and often a layflat hose are extra.
Two GC-DP 7835 reviews arrived with a two-pin plug. Do not cut it off. Spa water must cool below the published 35 °C. A 200 g or 600 g pump is not a cellar tool, and a 5 mm filter is not a 35 mm pump.
Match 25 mm or 35 mm to the debris, then measure the lift before you trust litres per hour. Ordinary pumps leave roughly 20 mm to 90 mm. A 1 mm claim needs a hard, level base, and a 2-in-1 title is not flat suction unless the bullets say so.
A mains pump needs a BS 1363 plug and 30 mA RCD protection. Check a 120 V line against the plate. An 18 V price is the body only. The hose is extra. Review count is not the same as a lab test: 10,114 reviews are not the same evidence as one UK review.
Three typical situations, each with a recommendation from this comparison.
You have a socket and a cooled hot tub, and a few centimetres left behind is acceptable. The Einhell GC-DP 3325 is 330 W, 9,500 L/h and 6 m at about £37.97, with 4.4 from 1,050 reviews. The hose is extra. One review emptied about 800 litres in 25 minutes on 25 mm hose. Skip it if you have not checked the 120 V line on the listing.
You need 35 mm solids, a float and a large UK review sample for a one-off cellar or pond. The Einhell GC-DP 7835 lists 780 W, 15,700 L/h and an 8 m head at about £50.50, with 4.2 from 10,114 reviews. It will not lift 10 m in one stage. Skip it if the delivery has a two-pin plug or the water is full of stones.
You already own an 18 V battery and the job is away from a socket. The Einhell GE-DP 18/25 LL Li is the body only, listed at 7,000 L/h and 5 m, at about £89.99, with 4.6 from 180 reviews. The battery, charger and hose are extra. Skip it if you need sprinkler pressure or you have no spare pack.
In this set the top pick is the Einhell GC-DP 7835: 780 W, 15,700 L/h, an 8 m head and 35 mm solids at about £50.50, with 4.2 from 10,114 amazon.co.uk reviews and a listing score of 76. The best value is the Einhell GC-DP 3325 at about £37.97, score 74, with 4.4 from 1,050 reviews, 9,500 L/h and a 6 m head. The hose is not in that box, and the listing prints 120 V, so check the plate before a UK 13 A socket.
Einhell GC-DP 3325
Best value in this set: score 74 at about £37.97, with 4.4 from 1,050 reviews, when you already have a hose. The listing prints 120 V, so check the plate.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources used for RCD protection, product safety marking and flood pumping limits. Manufacturer pages used for head, flow, particle size and the 35 °C limit. Listing prices, stars and review counts are the amazon.co.uk lines saved on 19 October 2026. This is not a lab test.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are the UK listing lines saved on 19 October 2026. We did not run a lab test.
