What is the DfE SuDS in Schools programme?

SuDS in Schools is a Department for Education (DfE) grant that pays up to half the cost of retrofitting sustainable drainage systems (SuDS) at state schools in England that flood from surface water. Councils, water companies, charities and schools bid for it once a year, build the scheme themselves and claim the money afterwards. The school then owns what was built and looks after it.

The DfE has never published a guide to the scheme, and the rules sit in a run of grant adverts, one DfE blog post from 2023 and a few written answers in Parliament, so the same half-dozen facts get repeated while the scoring, the costs and the upkeep go missing.

The latest round closed on 2 November 2026 with an estimated £5m on offer. Applicants are due to hear by 31 March 2027.

What does SuDS in Schools pay for?

The grant pays for drainage features added to an existing school site to hold rain close to where it falls, so that less of it reaches the playground, the entrance or the sewer at once. The DfE sorts schemes into three sizes, and the size sets what can be built.

Downpipe planters are the commonest feature by number. A rain garden does the same job at ground level, and both are source control: they deal with rain at the roof or the paving it fell on. Most of what the grant builds is green SuDS, planted and on show, which suits a school because pupils can see where the rain goes.

Whatever the size, the work starts where a surface water drainage strategy starts: where the water comes from, where it goes now and how much has to be held back.

Why does the DfE fund drainage at schools?

The DfE counts 10,710 schools in England as at risk of flooding, close to half the estate, and expects at least 13,662 by the 2050s. Both figures come from its sustainability and climate change strategy, published on 21 April 2022, which also set the target the programme works to.

SuDS in Schools is one of four strands of that water strategy. The others are a funding partnership with the Environment Agency on community flood schemes, property flood resilience measures at the highest-risk schools, and information for schools on water risks. The team that runs it works within the Risk Protection Arrangement, the DfE's alternative to commercial insurance for schools, and its lead has called the strategy "invest to save", a fair description of a department that pays the flood claims and is now paying to have fewer of them.

The risk in question is surface water flooding, where heavy rain overwhelms the drains and ponds on hard ground. Schools are prone to it for a simple reason: they have large roofs, playgrounds and car parks, all shedding water to a few gullies, and many sit in towns and cities where surface water risk is already highest.

How does the funding work?

The DfE pays up to 50% of the cost of the drainage features and the applicant finds the rest, although the share is at the department's discretion, so an award can come in below half.

• Who can bid. Lead local flood authorities, water companies, not-for-profit organisations and state-funded schools in England.
• Match funding. At least half the project cost has to come from the applicant or named partners. Money from private individuals does not count towards it.
• Payment. In arrears, against evidence of the outline design, the detailed design and the finished installation.
• Time limit. Three financial years from design to completion.
• Schools left out. Any school due to be rebuilt in the next three to five years is removed from a bid before it is scored.

The scheme has run as a yearly competition since at least autumn 2023. The last three windows opened on 23 September 2024, 14 July 2025 and 24 August 2026, each for delivery in a later financial year. The FY 2027/28 round was the first to carry a published budget.

How are SuDS in Schools bids scored?

Bids are marked against six criteria, and two of them, flood history and expected benefit, carry 60% of the marks between them. A bid has to reach a 20% minimum score, and clearing that threshold does not guarantee an award.

Taken together, the weights favour a bid that covers several schools at a modest cost each, with the design already under way, which describes a planter-led programme run by a council or a water company far better than it describes one school with one expensive scheme. A school can apply alone. The DfE steers single schools towards a larger bid.

Storm overflows do not appear in the scoring. Cutting the rain that reaches a combined sewer is the water companies' reason for putting up match funding, and the DfE lists it as a benefit, but a bid earns no marks for it.

What does a school SuDS scheme cost?

Published schemes work out at roughly £30,000 to £40,000 a school where planters and small rain gardens dominate. The DfE does not publish its awards, so the figures below come from the councils and water companies that built the schemes.

Leicester's three schools cost £113,000 between them, of which the DfE paid £56,000.

• Leicester, 2022 to 2023. Three schools and 15 features, among them rain gardens, swales, storage basins and green roofs. Trees for Cities, Severn Trent and Leicester City Council paid the half the DfE did not.
• Southern Water, to 2024. A £3m programme match-funded with the DfE across 93 schools, managing 8.2 hectares of hard surface.
• Westminster, summer 2025. Twenty-four planters across five primary schools, with workshops for more than 150 pupils, reported by CIWEM.

Southern Water puts the storage across its programme at more than 170,000 litres each time it rains. Spread over 8.2 hectares, that is about 2 mm of rainfall, against the first 5 mm that the national SuDS standards ask new development to intercept. Planters deal with ordinary rain and local ponding; they are not sized to hold a severe storm, and a school that needs that protection needs the swales and basins of the large category, which cost far more per school.

What does a school take on?

A school that joins a bid takes on the finished drainage for good. The grant is capital money: it pays to build, and nothing in it pays for upkeep. The DfE requires the applicant to leave a maintenance plan and to train the school, and after that the weeding, the litter, the blocked inlets and the replanting fall to the site staff and the school budget. No public body adopts the features afterwards.

The DfE tracks every funded scheme through seven stages.

1. The school commits to the project.
2. Surveys, modelling and an outline design, with a stated level of protection.
3. Detailed design, agreed by the school and certified by a qualified professional.
4. Tender and contract award.
5. Installation, managed by the applicant.
6. Evidence that what was built matches the agreed design.
7. Maintenance plans handed over and school staff trained.

Three things in that sequence fall on the school or its partners. The first is cash flow: the applicant pays its contractors and claims afterwards, and Leicester City Council reported carrying the cost until its agreements were signed. The second is time, because outcomes arrive by the end of March and noisy groundworks belong in the summer holiday, which leaves a few months for design and procurement. The third is the share, because an award below 50% leaves a gap that somebody has to fill.

Which design standard applies?

Designs must comply with CIRIA C753, The SuDS Manual, or an equivalent standard, and a qualified professional has to certify that the detailed design delivers the level of protection the bid promised. The FY 2027/28 round let applicants choose that level, from a 1 in 5 year rainfall event up to 1 in 1,000.

That is a lighter regime than a new school building faces. Defra's National Standards for SuDS say they were not written for retrofit schemes, and since August 2026 policy F8 of the NPPF has applied those standards to development that needs planning permission, which much retrofit work in school grounds does not. So a classroom extension has to show how it meets the national standards, while a grant-funded rain garden in the same playground answers to C753 and a designer's certificate.

Where a drainage consultant comes in

Stages two and three are consultancy work: a survey of where the roofs and paving drain, modelling of how much water arrives in the design storm, an outline design sized to it and a certified detailed design. It is the same evidence a surface water drainage strategy for planning sets out. Where a school is also planning an extension or a new block, the flood risk assessment for planning and the drainage strategy can draw on the same survey.

What has SuDS in Schools delivered so far?

The fullest count is 490 projects funded across England, 309 of them complete and 181 under way, given in a CIWEM article of June 2026. It does not say whether a project is one school or several. Ministers told Parliament in June 2025 that the whole water strategy, not SuDS alone, had reduced flood risk at 573 schools.

Against the strategy's own numbers, that is 573 schools towards a target of more than 800 by 2026, with 10,710 at risk. The DfE has not reported against the target, and nor has it published a list of awards, the spend in any round or its own assessment of the scheme.

Every performance figure published for a school SuDS programme so far is a design figure: area drained, litres of storage, the storm it was sized for.

Southern Water says it is monitoring its installations to inform later projects, and those results have not been published. Measuring many small features is a known difficulty, and the Environment Agency's Surface Water Investment Model, published in May 2026, was built so that they can be appraised together.

None of this makes the schemes poor value. A playground that no longer ponds at the gate, more planting and something to teach from are real gains, and Leicester ran a four-part education programme for over 500 pupils alongside its build. Flood risk reduction is the one benefit still waiting for measurements, and the awards due by 31 March 2027 are the next occasion on which the DfE could publish some.

Questions schools ask about the grant

Unda's consultants prepare the surface water drainage strategy for a school building project, from a classroom extension to a new block. Start a quote with the site address and the proposed works.