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The water bill for a large secondary school isn’t a small line item. It’s the third biggest utility cost after gas and electricity, and it’s the one most bursars haven’t looked at in years.
You can switch suppliers. Schools and academies have had that right in England since 2017. Most haven’t used it.
This page covers where school water costs actually come from, how academies and multi-academy trusts move to a new supplier, and the places water quietly disappears without anyone noticing.
- England’s non-household water market opened to competition on 1 April 2017 under the Water Act 2014.
- Around 20 retailers are licensed by Ofwat to supply schools, academies and multi-academy trusts.
- Wholesale supply still comes from regional water companies (Thames Water, Severn Trent, Yorkshire Water, and others).
- Academies contract directly, MATs can contract centrally for volume pricing, and maintained schools procure via the local authority.
- Typical secondary-school water spend runs £4,000–£12,000 a year; primaries typically £1,500–£4,000.
- The three biggest savings levers: surface water drainage rebates, meter validation, and tariff reviews.
Why schools pay more for water than they should
Three things combine to push school water bills above what the site actually costs to supply: historic estimated billing, surface water drainage charges that don’t always apply, and retailer contracts that were signed a decade ago and never renegotiated.
Most schools haven’t audited their bill since the market opened in 2017. The retailer has no incentive to flag overcharges. The bursar has a hundred other things to worry about.
The five places schools overpay
| What’s going wrong | Why it costs you money |
|---|---|
| Surface water drainage | You’re charged for rainwater entering the public sewer — even when your playing fields or roof drain to soakaways. Rebates can run into five figures. |
| Estimated meter readings | Estimates drift upward year on year. A meter that hasn’t been read in 18 months has almost certainly been overcharging. |
| Unchallenged standing charges | Daily fees are built into every bill and rarely questioned. Shop around and they shrink. |
| Metering errors in academy trusts | Shared supplies across trust sites get misallocated. One school gets billed for another’s usage. |
| Leaks behind the meter | A dripping urinal or cracked underground pipe adds thousands to your bill. The retailer won’t tell you. |
Can academies and MATs switch water supplier?
Yes, and the mechanism is different depending on who’s signing the contract.
An academy is its own legal entity, so it can enter a water contract directly — no council approval needed. Multi-academy trusts (MATs) can contract centrally for every school in the trust, which usually unlocks better volume pricing. Maintained schools sit inside the local authority’s procurement, so switching is done through the LA rather than the individual school.
The 12 retailers below are all licensed by Ofwat to supply non-household water in England. Pricing, service, and school-sector experience vary — most trusts shortlist three and go to a simple comparison exercise.
Routes to procurement
Three ways schools and trusts bring a new water contract in. Each comes with its own trade-off between control, effort and how sharp the price lands.
Schools water FAQs
Can a maintained school switch water supplier without the local authority?
In most cases, yes. The LA is the contractual counterparty on paper but nearly all authorities give schools autonomy over utilities. Check your scheme of delegation — it’s the one-page document that confirms it.
How long does a water supplier switch take?
Between two and six weeks from contract signature. There’s no physical change — the wholesaler (the regional water company) still supplies the pipes. Only the retailer changes.
Do we have to pay an exit fee on our current contract?
Usually not. Most school water contracts are evergreen or annual. Exit fees are rare but worth checking — ask your current retailer for a written contract end date before you move.
Can we recover money if we’ve been overcharged for surface water drainage?
Yes, up to six years of backdated refunds where the charge was clearly wrong. Evidence typically comes from a drainage survey showing where rainwater actually goes.
How does this work across a multi-academy trust?
The trust can sign one contract covering every site, or negotiate separate contracts per school. A single contract usually wins on price. Separate contracts give school business managers more local control.
What information do we need before we can get quotes?
SPID number (on your bill, top right on most retailers), annual volume in cubic metres, site addresses, and the current retailer’s name. That’s enough for a serious quote.
Is there a minimum school size before switching is worth it?
Not really. A primary with 200 pupils typically saves £400–900 a year. A secondary saves £2,000–8,000. A MAT saves five figures.
