Guide
Borehole licences and rules: the 20 m³ a day line, plainly
Updated
Good news first: most domestic boreholes need no licence at all. The rules that do apply are about how much you take out and whether you drink it, and both are straightforward once the thresholds are plain.
The abstraction rule
In England, abstracting more than 20 cubic metres of water a day from a borehole needs an abstraction licence from the Environment Agency; at or under 20 m³ a day you generally do not need one (gov.uk abstraction guidance). For scale, 20 m³ is about 130 bathtubs: a typical household uses well under 1 m³ a day, so ordinary domestic supplies sit far below the line. Farms irrigating and businesses with heavy water use are the ones that cross it, and licences are assessed against local water availability, so allow time and check the current guidance before designing around a big abstraction.
Drinking water rules, honestly
If people drink the water, the supply is regulated: private water supplies are subject to local authority risk assessment and testing under the Private Water Supplies Regulations (Private Water Supplies (England) Regulations 2016). A single household on its own supply has the lightest regime, but the council can still test, and supplies serving tenants, holiday lets or more than one property get scheduled risk assessments and monitoring, with fees the council sets. This is not a reason to avoid a borehole; it is a reason to budget for raw-water testing and whatever treatment (commonly filtration or UV) the results dictate, typically £1,000–£3,000 on a domestic installation in 2026 quotes.
The rest of the paperwork
- Planning permission: usually not needed for a domestic water borehole itself, but check with your council, especially in protected areas or where new above-ground kit is involved.
- Notifying drilling: drilling contractors handle the standard notifications that go with well drilling as part of the job; ask each quoting contractor to confirm what they cover.
- Wales, Scotland, Northern Ireland: the 20 m³/day licensing threshold and the regulators differ across the UK nations (Natural Resources Wales, SEPA and the councils have their own regimes), so check the local rules if you're outside England.
- Keep the reports: the drilling log, test results and any licence paperwork add real value when you sell the property.
Rules summarised as at 2026 for England; thresholds and procedures change, so check the current gov.uk guidance for your situation. Nothing here is legal advice, and your contractor's paperwork list is worth confirming in writing.