Water Audits and Bill Validation
We test every charge against how each site really uses water, then check each new bill so errors can’t creep back.
- Supply and Sewerage Charges
- Estimated and Missed Reads
- Tariffs and Meter Sizes
- Historic Overcharges
The Water Audit Experts, Since 1997
Stop Paying for Water You Never Used.
We check every bill, meter and drainage charge across your sites, claim back what you were overcharged and cut what you pay from now on.
- £7.4m Saved for Clients
- You Keep 100% of Savings
- Ofwat TPI Principles
£45,000 a YearLost through the leak in this meter chamber, until our team found it.
Trusted by Household Names and Public Bodies Since 1997
- ASDA
- McDonald’s
- Wolseley UK
- Jewson
- David Lloyd Leisure
- Pizza Hut
- Vue Cinemas
- RAC
- Barchester Healthcare
- Thorntons
- River Island
- Lookers
- DHL
- Electrolux
- Sheffield Wednesday FC
- Hammersmith & Fulham Council
What We Do
From the Bill to the Buried Pipe.
Overcharges hide in estimated reads, wrong tariffs, drainage charges and unseen leaks. We find them, fix them and claim back the difference.
Leak Detection and Repair
Flow logging and acoustic tracing find leaks under car parks, factories and prisons. We repair them and prove the saving.
£72,000 a YearLost at one prison to a constant 1.5 litres a second, until our flow logger caught it.
Drainage and Waste Water Charges
Surface water and sewerage charges often rest on wrong assumptions. We’ve had them cut and refunded for ASDA, McDonald’s and Somerfield.
Switching and Self-Supply
Since 2017, businesses in England can choose their water retailer. We tell you honestly whether switching will pay.
Also: AMR flow monitoring, trade effluent, water-saving fittings and rainwater harvesting.
Case Files
Every Drop, Accounted For.
Four cases from our files, in our clients’ own numbers.
£7.4m
Saved and refunded for clients in 27 of our published case studies.
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File 01Hammersmith & Fulham Council
Bishops Park, LondonThe Meter That Hadn’t Moved in Six Years
For over six years the council paid Thames Water around £35,000 a year, mostly on estimated bills. Our survey found the meter hadn’t moved in all that time, so we shut off the supply and claimed it back.
£150k+Refunded, Plus £35,000 a Year Saved
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File 02Sheffield Wednesday Football Club
Leppings Lane, SheffieldThree Leaks Under the Car Park
One small supply at the car park entrance cost £42,217 a year. We traced and repaired three leaks on the old lead main, then won a £22,000 allowance for water that never reached the sewer.
£60,665Saved in One Year, for £6,500
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File 03Thorntons
Chocolate Factory, DerbyFive Cubic Metres an Hour, Underground
The factory was using far too much water. At the main meter we measured a 5 m³ an hour leak, then traced two leaks acoustically: an isolation valve and a joint in the plastic main.
£100kSaved Every Year
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File 04ASDA Stores
Stores Across EnglandDrainage Charges, Rechecked
We audited surface water charges at a selection of stores and won lower charges plus refunds for billing errors. ASDA then extended the work to every store billed by five water companies.
£800kSaved and Refunded
How It Works
A Free Audit First. Then the Savings.
From a pile of bills to money back. Most clients recover any fees within 9 to 12 months.
Send Your Bills
Twelve months of bills for each site, plus a short questionnaire on how you use water.
Get Your Free Audit
Errors, refunds due and savings, site by site, with any fees for going ahead set out up front.
We Survey and Fix
If you go ahead, we survey each site and put right the leaks, tariffs and charges.
Keep the Savings
We claim back overcharges and check every new bill. You keep 100% of the savings.
Book a Free Water Audit
We never take a percentage of your savings.
Client References
Don’t Just Take Our Word for It.
“H2O Building Services have provided us with an excellent service during the time they have worked with us and they have produced substantial refunds and savings on our water and waste water charges.”
“During the time H2O have been our water consultancy partners the savings and refunds realised have been substantial.”
“We found H2O Building Services very easy to work with and there were no hidden costs.”
“Garry’s attention to detail cannot be faulted, I learnt a lot from him!”
About H2O
Founded by a Water Leak Detective.
Graham Mann founded H2O in 1997, after years auditing water use at some of the UK’s biggest industrial sites. The BBC has filmed him at work as a “water leak detective”.
His Wakefield team now works UK-wide, from single sites to estates of 600 branches, following Ofwat’s principles for intermediaries: independent, plain-spoken, never exaggerating savings.
- Founded
- 1997
- Water Engineering
- 30+ Years
- Head Office
- Wakefield
- Coverage
- UK-Wide
FAQ
Straight Answers About Your Bills.
Something else on your mind? Call 0845 658 0948, Monday to Friday, 9am to 5pm.
What does the free water audit involve?
You send us your last 12 months of water bills for each site and supplier, plus a short questionnaire about how you use water. We compare the two and report, site by site, where you’re overcharged, where refunds are due and where you can save. It costs nothing and commits you to nothing.
How do you charge, and do you take a share of the savings?
The desktop audit is free. If you go ahead, each site’s report sets out our costs and fees before any work starts. We don’t take a percentage of your savings or refunds: you keep 100% of them, and on most projects clients recover our fees within 9 to 12 months.
Can you really get money back from our water company?
Often, yes. We’ve won refunds for estimated bills, wrong tariffs, surface water charges and water that never reached the sewer, from £22,000 for Sheffield Wednesday to £250,000 for McDonald’s. We check your billing history and pursue every refund the evidence supports.
Do you only work with large, multi-site businesses?
No. We audit single sites as well as estates of hundreds of branches, for businesses, councils, schools, care homes and charities across the UK, from our base in Wakefield.
Should we switch water supplier?
Sometimes. Since 2017, businesses in England can choose their water retailer, and some organisations can supply themselves under a self-supply licence. We follow Ofwat’s principles for third-party intermediaries, so we only recommend a switch when it genuinely pays.
Do you find and fix leaks too?
Yes. We log the flow at your meter to spot water running when nothing should be, trace leaks acoustically, repair them and prove the saving. Automatic meter reading then spots the next problem straight away.
Free Water Audit
Find Out What You’re Owed.
Tell us about your sites. A water consultant will reply within one working day, usually asking for your last 12 months of bills.
- 0845 658 0948Monday to Friday, 9am to 5pm
- info@h2obuildingservices.co.uk
- Free, No-Obligation Audit
- You Keep 100% of Savings
- Fees Typically Recovered in 9 to 12 Months
