What should I do about a hosepipe ban and a new lawn?

A newly laid lawn is the one thing that genuinely cannot survive a dry spell unwatered — and there are exemptions, alternatives and a delay option, in that order.

Difficulty: beginner
Time: 30 min
Read: 5 min

Short answer

Check the water company's own rules first, because most temporary use bans allow watering newly laid turf or seed for a defined period, sometimes with prior notification. If not, water by watering can, which is almost always still permitted, or use stored rainwater, which is unrestricted. If the turf is not yet laid, delay it — autumn laying needs a fraction of the water and gives a better lawn.

A temporary use ban, which is what a hosepipe ban legally is, restricts specific domestic uses of a hosepipe. The list of restricted uses and the exemptions are set by each water company within a statutory framework, so they are not identical everywhere. New turf has almost no root system for the first few weeks and dries out within a day in warm weather, which is why several of the standard exemptions cover it — and why the safest thing to do in a dry summer is not to lay it at all.

What you'll need

Your water company's published temporary use ban rules
Watering cans, and someone to carry them
A water butt or other stored rainwater (optional)
A mulch or topdressing to reduce evaporation

Step by step

Read your own water company's rules, not a general article.Temporary use bans differ between companies. Most publish the exact restricted uses and exemptions on their website, and newly laid turf or newly sown lawn commonly appears as an exemption for a defined period after laying.
Check whether the exemption needs notifying.Some companies require you to tell them, or to keep a receipt showing the laying date. Keeping the invoice for the turf costs nothing and settles any question about when it went down.
Use a watering can if there is no exemption.A temporary use ban restricts hosepipes, not water. Watering by can is normally still permitted, and for a small lawn it is entirely feasible for the few weeks that matter.
Use stored rainwater without restriction.Water from a butt is outside the ban entirely, including through a hose or pump connected to the butt rather than the mains. A butt on each downpipe holds a surprising amount.
Delay laying if it has not gone down yet.This is the best answer by a distance. Turf laid in September or October establishes on natural rainfall and needs almost no watering, whereas June turf needs daily attention for a month. Turf keeps badly, so postpone the delivery rather than the laying.
Water heavily and infrequently rather than little and often.A good soaking every few days drives roots down; a light sprinkle every evening keeps them at the surface where they die first. Water early morning or evening to cut evaporation.
Check whether it is actually reaching the soil.Lift a corner of the turf after watering. If the underside and the soil below are dry, the water is running off or being held in the thatch and you need to water more slowly and for longer.
Keep off it and keep it long.No traffic while it establishes, and when you do start mowing, set the mower high. Longer grass shades its own roots and needs less water than short grass.
Accept that established lawn going brown is fine.An established lawn is dormant, not dead, and greens up within a fortnight of rain. Watering an established lawn during a ban is the restricted use; letting it brown is the correct response.
Reduce the demand for next time.Water butts on every downpipe, more organic matter in the soil, mowing high, and considering whether the whole area needs to be lawn. A drought-tolerant mix or a small area of hard landscaping removes the problem permanently.

Tips

Breaking a temporary use ban is a criminal offence with a fine, so 'nobody will notice' is a poor plan and neighbours do report it.
Grey water from a bath or washing-up bowl can be used on a lawn in the short term, provided it is not full of bleach or strong detergent. It is fine for turf and less good for edible crops.
Newly sown seed is more vulnerable than turf, because it dries out in hours rather than a day. If a ban is likely, sow in autumn.
A commercial or landscaping contract may have different rules from a domestic one, and businesses are sometimes treated separately. If a contractor laid it, ask them what the position is.
Watering at midday in hot weather wastes a large proportion to evaporation and can scorch. Early morning is the most efficient time of day.

Common mistakes

Laying turf at the start of a dry summer — It needs daily watering for weeks at exactly the time water is restricted, and it usually dies anyway. Autumn laying costs the same and works.
Assuming the exemption applies without reading it — Exemptions vary by company and by the age of the lawn, and some require notification. Two minutes on the website avoids a fine.
Sprinkling lightly every evening — It keeps the roots at the surface, where they die first when the water stops. Fewer, heavier waterings produce a lawn that copes with the next dry spell on its own.
Watering an established lawn during a ban — It is the restricted use, it is unnecessary because dormant grass recovers, and it is the reason bans exist. Brown grass in August is normal.

If it doesn't work

New turf shrinking with gaps opening at the joints

Cause: Drying out and contracting — Fix: Water heavily as soon as you can, brush a sandy topdressing into the gaps, and keep it damp. If the edges are curling, they are already stressed and need water that day.

Turf looks green but lifts easily weeks later

Cause: It has not rooted, usually because watering was too light — Fix: Water deeply and less often so moisture reaches the soil below, and keep all traffic off. Rooting takes two to three weeks in good conditions and longer in heat.

Established lawn brown and crisp

Cause: Summer dormancy — Fix: Nothing. Do not water and do not feed. Mow high or not at all, keep traffic off, and it will recover within a fortnight of proper rain.

Questions people ask

Can I water a new lawn during a hosepipe ban?

Often yes — most water companies exempt newly laid turf or newly sown lawn for a defined period, sometimes on condition you notify them or can show the laying date. It varies by company, so check your own supplier's published rules rather than assuming.

Is a watering can allowed?

Normally yes. A temporary use ban restricts specified uses of a hosepipe, not the use of water, so hand watering with a can is generally still permitted. Check your company's list, which will state it explicitly.

What is the fine for breaking a hosepipe ban?

It is a criminal offence under the Water Industry Act, prosecutable with a fine of up to £1,000. In practice companies use warnings first, but it is not a rule to test.