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Domestic water pump buying guide

Updated: 22 October 2026

A tap that barely fills a kettle, or a butt below the pump, is why a UK household starts comparing surface pumps. This domestic water pump buying guide uses a stricter order than the watt figures on amazon.co.uk: where the water sits, the flow you need at a real head, then the thread, the voltage and the plug. The five listings we kept are on the [domestic water pump comparison](/hub/garden-watering/domestic-water-pump), from £42.33 to £111.40. Peter F., editor for DIY & tools, read those listings on 21 October 2026. There is no laboratory test. A qualifying purchase can earn a commission at no extra cost to you.

A tap that barely fills a kettle, or a butt below the pump, is why a UK household starts comparing surface pumps.

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Where the water sits

A surface pump stands beside the water and lifts only if the inlet can hold a column. The KATSU 151434 and the VEATON print 8 metres, a brochure maximum, not a hose trailed across a lawn. A loft feed is a boost. A butt below the pump needs a suction depth you have measured. Self-priming means the casing can clear air after one fill. It does not mean the pump may run dry. The KATSU 151414 says it is not self-priming. The KATSU 151434 states self-priming. The VEATON tells you to prime before use. The Ejoyous and the Draper do not state it. The fill is on how to prime a water pump.

Flow and head are not a pair

UK Flow Centre puts source, flow, vertical lift, pipe losses and electrics ahead of watts. They state that 1 bar is about 10.2 metres, and that maximum flow and maximum head on a box cannot be used together. The KATSU 150 W states 2.0 cubic metres an hour, about 33 litres a minute, beside 25 metres. The VEATON states about 58 litres a minute beside 46 metres. The Draper states 76 litres a minute and no head. That open-hose figure is not comparable with 20 litres a minute at 15 metres. Every maximum here sits above 12 litres a minute, so a supply pipe belongs on the booster pump water regulations page.

Threads, volts and the plug

Flood & Water Pumps note that 1 inch BSP is about 33 mm across, not a 25 mm bore. The VEATON names G 1 inch and G 1-1/4 inch. The KATSU 150 W states 25 mm ports. The Ejoyous title says 24 V and does not describe a BS 1363 plug. The KATSU 150 W file says battery powered and 220 V, and we do not pick one. The KATSU 260 W comes without a plug. A bare flex needs a BS 1363 plug fitted by someone allowed to do that work.

What these five actually state

None of the five shows WRAS. The live amazon.co.uk page for the KATSU 151434 says that pump is not suitable for drinking water. The VEATON title says 1,200 W while another field says 800 W, and hose kit FPC3-4 is extra. The Draper states no head. A missing hose or plug is a different basket from the title price.

Common questions

Do I size the pump on watts or on flow at a head?
Size it on the flow you need at a head you can account for. UK Flow Centre’s point is that the maximum litres and the maximum metres on a box are not available together. The VEATON title says 1,200 W while its horsepower field says 800 W, so the watt line is not even stable. The Draper states 1,100 W and 76 litres a minute and states no head.
Is 8 metres the length of hose I can use?
The 8 metre figure on the KATSU 150 W and the VEATON is vertical suction lift, from the water surface up to the pump. Hose across the garden is a separate length, and friction in it uses some of the head. Flood & Water Pumps put a practical cap nearer 6 metres and call it a rule of thumb. At a true 8 metres you are on the edge of the brochure claim. A small air leak can leave the motor running and the hose dry.
What does 1.5 bar mean at a shower?
Salamander’s guide, which is theirs and not a test of these pumps, treats 1.5 bar as one outlet and about 10 metres of static head as 1 bar. Their notes put a standard shower around 12 litres a minute and a tap around 8. The KATSU 260 W states up to 1.5 bar, 15 metres and 20 litres a minute as maxima. If you need two outlets together, their guide steps up to 2.0 bar, and none of these listings prints that curve.
Will a 15 mm thread fit UK pipe?
It fits only when the pipe and the pump share the same thread. One inch BSP is about 33 mm across, which is not a 15 mm compression end. UK reviews of the Ejoyous say the thread is not BSP and that a converter was needed. The VEATON names G 1 inch and G 1-1/4 inch. The KATSU 150 W states 25 mm ports. Measure the port rather than trusting a review argument about 1/2 inch versus 3/4 inch.
Can this pump go on drinking water?
The live amazon.co.uk page for the KATSU 151434 says that pump is not suitable for drinking water. None of the five shows WRAS, Kiwa Regulation 4 or NSF Reg4. Rainwater or irrigation is a different use from a kitchen tap you drink from. If the pump will touch a supply pipe, the water-company rules are the next page, and these listings are the wrong class for that job.
What is missing if the pump has no plug?
A BS 1363 plug is missing, and often a lead long enough to reach a socket. The KATSU 260 W listing says it comes without a plug, and UK reviews describe a very short cable. Fitting that plug is electrician’s work. We do not describe how to wire it. The VEATON listing does not state a plug either, though one review says a UK plug was in the box, which is a single report.

Related pages

Sources

Public UK sources for fittings rules, pump notification, rainwater and plugs. Listing prices, stars and review counts are the saved amazon.co.uk lines. This is not a lab test. One digest source URL for a manufacturer course was truncated and is not listed here.

  1. Water Supply (Water Fittings) Regulations 1999 (retrieved 22.10.2026)
  2. Water Regs UK — pump notification (retrieved 22.10.2026)
  3. Scottish Water — water byelaws (retrieved 22.10.2026)
  4. Water Supply (Water Fittings) Regulations (Northern Ireland) 2009 (retrieved 22.10.2026)
  5. Waterpump.co.uk — increasing house pressure (retrieved 22.10.2026)
  6. Environment Agency — harvesting rainwater for domestic uses (retrieved 22.10.2026)
  7. Electrical Safety First — plugs and fuses (retrieved 22.10.2026)