In England, you normally need a water abstraction licence from the Environment Agency if you take more than 20 cubic metres of water a day from a river, stream, canal or groundwater source (GOV.UK, Check if you need a licence to abstract water). Take 20 cubic metres a day or less and you are usually exempt, though the exemption applies to your combined total from a source, not to each pump separately. For an irrigated farm, 20 cubic metres is not much water, so most serious irrigation operations need a licence. Here is how the rules work and how good system design helps you stay comfortably within what your licence allows.
The 20 cubic metre rule, in plain terms
The threshold is volume per day from a source. If you abstract from the same source at more than one point, the exemption only applies if the combined total across all points is 20 cubic metres a day or less (GOV.UK, Check if you need a licence to abstract water). You cannot split an abstraction across two pumps to stay under the limit.
To put the number in context, 20 cubic metres is 20,000 litres. A single hectare of field vegetables in a dry spell can want more than that, so the licence question arrives quickly once irrigation moves beyond a garden scale. [VERIFY — EDITORIAL: sense-check the “single hectare can want more than that” framing; it is deliberately qualitative but Jen may prefer it cut]
Which licence type applies?
GOV.UK sets out three main abstraction licence types (Apply for a water abstraction or impounding licence):
- Full licence: the standard licence for most abstractions over 20 cubic metres a day, including spray irrigation.
- Transfer licence: for moving more than 20 cubic metres a day from one source to another without using it in between.
- Temporary licence: for abstracting more than 20 cubic metres a day over a period of less than 28 days.
Licences come with conditions: how much you can take, when, from where, and metering and record-keeping requirements. Charges also apply, and the Environment Agency publishes its charging guidance on GOV.UK (Water resources licences: when and how you are charged). Because conditions vary case by case, confirm your own position with the Environment Agency before relying on any general guide, including this one.
Why abstraction rules make efficiency a compliance issue
Once your licence caps what you can take, every wasted litre comes out of your growing capacity rather than just your pocket. That changes how you look at system design:
Application method matters. Drip irrigation delivers water to the root zone rather than broadcasting it across the whole surface, which makes each abstracted cubic metre do more work on rowed and bedded crops. Our drip irrigation systems page explains where drip fits, and our comparison of drip vs sprinkler irrigation covers the trade-offs.
Storage decouples abstraction from demand. A reservoir or tank lets you abstract steadily within your licensed volumes (for example over winter, subject to your licence conditions) and irrigate hard in summer when the crop needs it. For farms in catchments where summer abstraction is restricted, storage is often the difference between a licence that works and one that constrains the rotation. See our water storage solutions page.
Control systems keep you inside your numbers. Metering is a standard licence expectation, and modern controllers log what each zone receives. Accurate records make licence returns straightforward and give you the data to spot waste early.
Dry summers raise the stakes
In drought conditions the Environment Agency can restrict abstraction, and it publishes drought and water resource updates for abstractors (Environment Agency blog, Drought and water resource information and links, July 2026). Farms that rely on unrestricted summer abstraction carry more risk in a dry year than farms with storage and efficient application. Building resilience into the system design is cheaper than losing a crop to a restriction you could not plan around.
Frequently Asked Questions
*Mark up with FAQPage schema.*
Do I need a licence to abstract water for farm irrigation?
In England, yes if you take more than 20 cubic metres a day from surface water or groundwater. At or below 20 cubic metres a day you are usually exempt, based on your combined total from the source (GOV.UK, Check if you need a licence to abstract water).
Who issues abstraction licences?
The Environment Agency issues abstraction licences in England. Applications are made through GOV.UK, and licences carry conditions on volumes, timing and record keeping.
Does the 20 cubic metre limit apply per pump?
No. If you abstract from the same source at multiple points, the exemption only applies if the combined total across all abstraction points is 20 cubic metres a day or less (GOV.UK).
Can abstraction be restricted in a drought?
Yes. The Environment Agency can apply restrictions in dry conditions and publishes drought updates for abstractors. Storage and efficient application methods reduce your exposure to summer restrictions.
Can Sitetech design a system around my abstraction licence?
Yes. We design irrigation and water storage systems around the water you are licensed to take, including metering and control so your records stay accurate. Licensing decisions themselves sit with the Environment Agency, and we recommend confirming licence questions with them directly.
Design the system around the water you can take
An abstraction licence defines your water budget; the irrigation system decides how far that budget stretches. If you are planning irrigation, storage or an upgrade, talk to Sitetech early so the design and the licence work together. Call 07881 271 117 or reach us through our contact page.
—
Reviewer notes:
- Abstraction facts (20 cubic metre threshold, combined-total exemption rule, three licence types, temporary licence under 28 days, EA as issuer, charging guidance) confirmed against GOV.UK pages, 3 August 2026: “Check if you need a licence to abstract water”, “Apply for a water abstraction or impounding licence”, “Water resources licences: when and how you are charged”.
- Drought restriction point sourced to the Environment Agency blog drought information post (21 July 2026). Kept general; no specific catchment or restriction claimed.
- England-only scope stated; Wales/Scotland regimes not covered (site audience is England-based, primarily Lancashire).
- No water-saving percentages used anywhere, per client constraint.
- Silo row was Target Month Sep 2026; pulled forward to August as the next unpublished Future row after the grants topic.
- One EDITORIAL flag (hectare water-demand framing).