Home Irrigation System UK: Hosepipe Ban Watering Guide

Updated 20 July 2026 · 10 min read · By RainpoIrrig

Quick answer: A home irrigation system in the UK is an automated set of drippers or sprinklers on a timer — but during a hosepipe ban only efficient drip systems (with a pressure-reducing valve and timer, delivering water to the soil) stay within the rules, while sprinklers on the mains are banned.

With hosepipe bans now a regular feature of the UK summer, a home irrigation system is less about luxury and more about watering efficiently and legally when water is short. This guide explains the system types, what the rules actually say during a Temporary Use Ban, and how to water your garden without wasting a drop — or risking a fine.

Types of home irrigation, briefly

Drip / trickle: water seeps out slowly at each plant. Most efficient, and the type usually permitted during a ban.
Soaker hose: a porous pipe along a bed. Simple and gentle.
Sprinklers: cover lawns well but lose water to wind and evaporation — and are banned on the mains during a Temporary Use Ban.

What a hosepipe ban actually allows

A Temporary Use Ban (TUB) is a legal restriction under the Water Industry Act 1991. Across the 2026 bans, water companies have used near-identical wording: a drip or trickle irrigation system is permitted only if it is:

fitted with a pressure-reducing valve and a timer;
not handheld;
delivering water drip by drip directly onto or beneath the soil, with no runoff, misting or spray through the air.

Sprinklers, misters and spray systems connected to the mains are not allowed. So a timer is part of the exemption criteria for a compliant drip setup — it is not, on its own, a free pass to water however you like.

Honest note: exact rules vary between suppliers and can change, and rainwater from a water butt is treated differently because it is not mains water. Always read your own water company notice before watering during a ban.

Planning your layout

Group plants by how thirsty they are, keep drip runs to sensible lengths so pressure stays even, and put the whole thing on a suitable timer. The HTV245-series controller has two independently controlled outlets. Confirm its inlet connector and the intended downstream fittings before installation.

Watering efficiently, ban or no ban

Even outside a ban, drip watering to the roots wastes far less than a sprinkler, and a timer running before dawn means less evaporation and steadier growth. It is the cheapest way to cut both your water use and the daily faff.

Control two watering outlets independently:

Shop the HTV245-Series 2-Zone Controller — £72.99

Two independent outlets · 0.5–8 bar · 3–50°C · 12-month retailer warranty

Frequently asked questions

Can I use a home irrigation system during a hosepipe ban?

Usually only a drip or trickle system that is fitted with a pressure-reducing valve and a timer, is not handheld, and delivers water directly to the soil without spray or runoff. Sprinklers on the mains are not allowed. Check your water company notice.

Does fitting a timer make my system exempt from a hosepipe ban?

Not on its own. A timer is one of several conditions for a drip system to qualify. The system must also have a pressure-reducing valve, deliver water to the soil and not spray into the air.

What is the most water-efficient home irrigation system?

Drip or trickle irrigation is the most efficient because it delivers water slowly to the roots with little evaporation. Pairing it with a timer set for early morning reduces waste further.

Is rainwater from a water butt covered by a hosepipe ban?

Rainwater from a water butt is not mains water, so it is generally not restricted by a hosepipe ban. It is a good way to keep watering during a Temporary Use Ban.