Drip Irrigation During a Hosepipe Ban — UK Exemption Rules

Yes — timed drip irrigation with a pressure reducing valve is exempt from UK hosepipe bans. We quote the official wording and show a compliant setup.

Yes — you can run drip irrigation during a UK hosepipe ban, provided it meets three conditions written into the water companies’ own rules: the system is fitted with a pressure reducing valve, it runs on a timer, and it is not handheld, dripping water directly onto the soil rather than spraying it. This article quotes the official wording and shows how to meet each condition.

Where the exemption actually comes from

Hosepipe bans (legally, Temporary Use Bans) are issued by each water company under section 76 of the Water Industry Act 1991. The company publishes the restricted uses and — crucially — the exemptions. Here is South East Water, in its Kent ban FAQ published for the ban that became enforceable on 3 July 2026:

“You might consider investing in drip or trickle irrigation watering systems, fitted with a pressure reducing valve and a timer, that are not handheld, that place water drip by drip directly onto the soil surface or beneath the soil surface, without any surface run off or dispersion of water through the air using a jet or mist. These devices are not prohibited under the Temporary Use Ban because they are very water efficient.”

And in the same document, in plain Q&A form: “Does the restriction apply to irrigation systems?” — “Not if it is a drip fed system. In all other instances, yes it does.”

This mirrors the standard exemption wording used by UK water companies in their published drought plans, because approved drip systems use a fraction of the thousand litres per hour a running hosepipe can draw. But always check your own supplier’s notice — our 2026 hosepipe ban tracker links to every company’s current rules.

The three conditions, unpacked

1. “Fitted with a pressure reducing valve”

A pressure reducing valve (PRV) caps the pressure entering the drip line, typically to 1–1.5 bar, so emitters drip instead of jetting. Most UK drip kits include an inline PRV; if yours doesn’t, a screw-on hose PRV costs a few pounds and fits between the tap valve and the supply line. Without it, a mains-pressure line can mist water into the air — exactly what the exemption wording excludes.

2. “And a timer”

The word timer appears in the exemption text itself. An unattended, timed schedule is what separates a water-efficient system from a hosepipe left running. Any tap timer satisfies the letter of the clause; a multi-zone smart timer satisfies it with less water still, because each zone gets only the minutes it needs. The Johgee 4-Zone RF Smart Water Timer runs four independent drip circuits on separate schedules — see the full specification for its pressure ratings and fittings.

3. “Not handheld… drip by drip directly onto the soil”

The water must leave the system at soil level, through drippers or porous line — not through a spray head you hold or a sprinkler that throws water through the air. South East Water’s Q&A is blunt about the alternative: sprinklers and pressure washers stay banned, full stop.

A compliant setup in five parts

1. Outside tap — the ordinary mains tap you already have.
2. Timed valve — screwed onto the tap; opens and closes each zone on schedule. Set watering for dawn (roughly 5–7am) when evaporation is lowest; in Kent, note that even the newly-laid-turf exemption excludes 8–10am and 5–9pm peak hours, which is a sensible pattern to copy.
3. Pressure reducing valve — inline, after the valve, before the drip line.
4. Supply pipe and drip line — 13mm supply feeding 4mm drip line or inline-emitter pipe, laid along beds and borders.
5. Drippers at the roots — adjustable 0–70 L/h drippers or pre-spaced emitters, dripping onto soil, ideally under mulch.

Diagram note for the web version: a labelled photo of this chain (tap → timer → PRV → line → dripper) converts sceptics better than any paragraph — worth shooting once at the office garden.

What is still banned, even with a timer

A timer does not launder a sprinkler. These stay prohibited during a ban:

• Sprinklers, oscillators and misters on mains water — timed or not
• Handheld hosepipe watering (unless you hold a specific exemption, e.g. Priority Services Register customers in Kent)
• Jet-washing patios, washing cars with a mains hose, filling pools and hot tubs

Two useful legal outs remain for everything else: hand watering with a can or bucket is always allowed, and stored rainwater is outside the ban entirely — South East Water confirms you may use “rainwater from a water butt through a hosepipe”. If you want to run drip from a butt, pressure is the real obstacle; we measured what actually works in our water butt low-pressure test.

Common questions

Do I need to tell my water company I’m using drip irrigation? No. The exemption is written into the ban notice; no registration is required. Keep your setup obviously compliant (visible PRV, timer on the tap) in case a neighbour asks.

Can I water at any time of day? Legally yes, if the system is exempt — but dawn watering wastes least to evaporation, and duplicating the peak-hour exclusions in the turf exemption (avoid 8–10am, 5–9pm) is good citizenship during a shortage.

Does a soaker hose count? Porous soaker hose laid on the soil, fed through a PRV on a timer, fits the “trickle… without dispersion through the air” wording. A soaker hose left on full mains pressure with no timer does not.

What’s the penalty if I get it wrong? Contravening a Temporary Use Ban is an offence carrying a fine of up to £1,000 under the Water Industry Act. Water companies say prosecution is a last resort — but a £15 PRV is cheaper than the conversation.

More edge cases — allotments, greywater, new plantings — are answered on our FAQ hub.

---

Get 10% off your first order. Enter your email on the product page and we will send a genuine 10% code for the Johgee 4-Zone RF Smart Water Timer, plus an alert if your region’s ban rules change. Real discount, valid whenever you are ready.