Plumbing · Updated September 2026
Borehole Cost UK 2026: Drilling & Private Water Supply
A typical garden borehole costs £5,000–£9,000 drilled and equipped - drilling runs £60–£120 per metre and most domestic holes are 40–60m. Upgrading to a treated potable supply adds £3,000–£6,000.
Borehole cost by stage — 2026
For a typical domestic borehole of 40–60 metres in reachable ground.
| Stage | Typical cost | Rate | Notes |
|---|---|---|---|
| Hydrogeological survey / prognosis | £200–£500 | — | Predicts depth, yield and water quality |
| Drilling and lining | £2,500–£6,000 | £60–£120 / m | The depth is the bill |
| Pump, pressure vessel and controls | £1,500–£3,000 | — | Sized to yield and household demand |
| Garden/irrigation supply, complete | £5,000–£9,000 | — | The common install |
| Potable treatment system | +£3,000–£6,000 | — | Filtration, UV and testing for drinking use |
Indicative 2026 UK prices, compiled from published installer pricing (Checkatrade, MyJobQuote, MyBuilder and BookaBuilder cost guides, August 2026). BestBuilders has no quote history in this category yet, so treat these as a budgeting guide and confirm against three written quotes.
What changes the cost
| Cost factor | Typical impact | Why it matters |
|---|---|---|
| Depth to water | £60–£120 / m | The survey's depth estimate is the single biggest number in the quote |
| Ground conditions | ±25% | Sand and gravel drill fast; hard rock and collapsing ground do not |
| Intended use | +£3,000–£6,000 | Irrigation water needs little treatment; drinking water needs filtration, UV and testing |
| Rig access | ±£500–£1,500 | Drilling rigs are lorry-sized; a rear garden with no side access may need a mini rig at a premium |
| Licensing | usually £0 | Abstraction under 20,000 litres/day needs no licence in England and Wales - almost all domestic use |
Borehole cost by UK region — 2026
Modelled from regional labour rates rather than measured in this category — materials cost much the same everywhere, the labour does not.
| Region | Typical cost | vs UK average |
|---|---|---|
| London | £6,200–£11,700 | +25–30% |
| South East | £5,800–£10,800 | +15–20% |
| South West | £5,200–£9,400 | +5% |
| Midlands | £5,000–£9,000 | baseline |
| North England | £4,500–£8,600 | −5–10% |
| Scotland | £4,500–£8,100 | −10% |
| Wales | £4,500–£8,100 | −10% |
| Northern Ireland | £4,200–£7,600 | −15% |
Getting it priced properly
1. Pay for the prognosis
A £200–£500 desk survey predicts depth and yield from geological records. Drilling blind is how five-figure surprises happen.
2. Quote per metre, capped
Insist on a per-metre rate with an agreed maximum depth, so a dry first attempt is a defined cost, not an open one.
3. Water-test before you drink
Potable use needs a lab test and usually filtration plus UV. Budget it from day one or treat the borehole as garden-only.
What this costs at a glance
The same table, drawn.
Is a borehole worth it for your home?
A borehole is a bigger commitment than most garden projects, so it's worth being honest about whether it suits your home before you pay for a survey. It tends to earn its keep in three situations more than any other, and it rarely does on a low-use home already on the mains.
When it makes sense
If you're on a water meter with a thirsty garden, paddocks, stables or a pool, or you're rural with no mains and weak pressure, a private supply changes the sums. On a modest metered household it seldom repays the outlay.
What it costs to run
Day to day it's mostly electricity for the pump, which is small for a domestic system, plus a service every year or two. For drinking water, budget for replacement filter cartridges, UV lamp changes and a lab test at least once a year.
What to keep on top of
Yield can dip through a long dry summer, and pumps and pressure vessels wear like any other. Keep the wellhead sealed against surface run-off, and re-test the water after any nearby groundworks or a change in taste or colour.
Boreholes — frequently asked questions
A typical garden/irrigation borehole costs £5,000–£9,000 drilled and equipped in 2026. A fully treated drinking-water system runs £8,000–£15,000. Drilling itself is £60–£120 per metre.
Not for most homes: abstraction under 20,000 litres per day needs no licence in England and Wales. You should still notify the water undertaker if you plumb it into the house.
Only after testing and treatment - typically sediment filtration and UV, sometimes more depending on the lab results. Untreated borehole water is for the garden.
On a metered supply with heavy garden use, irrigation from a borehole can repay itself in under a decade - water for pennies per cubic metre against £2+ from the mains.
Related cost guides
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Softeners supplied and fitted.
New lawns priced per m2.
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Reviewed by the BestBuilders editorial team · Last updated: 6 September 2026 · Next scheduled review: December 2026 · See our editorial standards.