What's going on
Water company scam calls are one of the oldest tricks going. Criminals ring up, send a text, or knock on your front door claiming to be from Thames Water, United Utilities, Severn Trent, Anglian Water, Yorkshire Water, or whichever company supplies your area. They say you owe money, your meter needs checking, or you're due a refund. None of it is real. What they want is your bank details, your card number, or a way into your house.
These scams work because everyone has a water supply and most people couldn't tell you the last time they actually heard from their water company. If someone rings sounding official and says there's a problem with your account, you've got no reference point for what a genuine call sounds like. United Utilities identified 79 of its customers who were targeted by hoax calls between October 2024 and early 2025. The initial charges were small, around twelve pounds each. But once the criminals had card details, larger amounts started disappearing from accounts. That first small payment was just the way in.
How the scam works
It follows the same pattern almost every time. The caller picks a story, builds up pressure, and then goes for your money. Here's each stage.
1. The call or text
Your phone rings or a text lands. The caller says they're from your water company. They might name the right one for your area, or they might just say "the water board." That phrase is the first giveaway. Water boards were abolished and privatised in 1989. They haven't existed for over 35 years. But plenty of people still use the term casually, and scammers know that.
The "water board" tell
Anyone who says "the water board" in an official capacity is not from your water company. The regional water companies have had their own names since privatisation. If someone can't even name the right company, that tells you everything you need to know.
2. The fake problem
They tell you there's an issue with your account. Common lines include: you've got an unpaid bill about to be referred to a debt collector, there's a fault with your water meter, or your direct debit has failed. Some texts claim your payment was declined and include a link to "update your details." The link goes to a fake website built to look like your water company's login page.
They can't cut you off
Under UK law, water companies cannot disconnect the supply to domestic properties for unpaid bills. This has been the case since the Water Industry Act 1999. If someone threatens to shut off your water, they're making a threat that can't legally be carried out. Full stop.
3. The pressure
This is where they turn up the heat. They'll tell you there's a deadline. Pay today or face consequences. Your supply will be interrupted. A debt collection agency has already been instructed. An engineer needs access to your property within the hour. All of it designed to stop you thinking and start you reacting.
How real water companies handle debt
If you genuinely owed money to your water company, they'd write to you. Multiple times. They're required to follow a clear process before taking any action, and that process involves letters, payment plans, and plenty of notice. Nobody legitimate is ringing you up demanding money on the spot.
4. The theft
If you've stayed on the line this long, they go for what they came for. Bank details, card numbers, or a direct payment. Some ask you to pay over the phone. Others send you to a website. In the United Utilities cases, the initial charge was only around £12, but once they had card details, more money started vanishing from accounts. That small first payment was just the door opener.
The small charge trick
A charge of twelve pounds doesn't set off alarm bells for most people. It looks like a normal bill payment. But once criminals have your card details from that one transaction, they can take more. Check your statements carefully if you've paid anything to someone you weren't expecting to hear from.
What these calls sound like
The wording changes but the structure is always the same. They name a water company, describe a problem, and push you to act before you've had time to think about it.
"The overdue bill"
The most common version. They say you've missed a payment and your account is about to be passed to a collection agency. They might threaten to interrupt your supply. They can't do that. It's illegal.
"We're calling from Thames Water about an overdue payment on your account. If this isn't settled today, we'll need to pass it to our collections team and there may be an interruption to your water supply."
"The meter inspection"
They say your meter needs checking or replacing and want to arrange a visit. Some ask for a fee to cover the inspection. Meter checks are free. Your water company doesn't charge for routine maintenance and they'll book visits in writing, not through a cold call.
"This is Severn Trent Water. We need to send someone to inspect your water meter as part of a routine check. We just need to confirm your address and take a small payment of £12.83 to cover the inspection."
"The refund"
The friendly version. They say you've been overcharged and you're owed money back. All they need are your bank details to process the refund. If your water company genuinely owed you money, they'd credit your account or send a cheque. They wouldn't ring asking for your sort code.
"Good news. We've calculated that you've been overcharged on your water rates and you're entitled to a refund of £127.50. We just need your bank details so we can process that for you today."
"The water board"
They say they're from "the water board" and need to check your internal stop tap or test your water pressure. The water board doesn't exist. It hasn't since 1989. Anyone using that name is either clueless or deliberately keeping things vague so you can't verify them.
"Hello, I'm calling from the water board. We're doing some work in your area and we need to check your internal stop tap. Can we arrange a time to come round this afternoon?"
Doorstep callers
This one deserves its own section because water company impersonation is the single most common cover story for bogus doorstep callers. More than 60% of bogus caller crimes at people's front doors involve someone claiming to be from the water company. Once they're inside your home, they can steal cash, valuables, or personal documents while you're distracted.
Real water company employees do visit properties. They read meters, carry out repairs, and check for leaks. But there are clear differences between a genuine visit and someone trying it on.
A real water company employee
- • Carries a photographic ID card with their name and company logo
- • Will wait while you ring the company to verify them
- • Will never ask for or accept money at your door
- • Will know your doorstep password if you've set one up
- • Has usually been booked in advance, with written confirmation
A bogus caller
- • Has no ID, or shows a card that doesn't look right
- • Gets agitated if you say you want to check with the company first
- • Asks for money for a repair, inspection, or unpaid bill
- • Claims to be from "the water board" instead of naming your actual company
- • Turns up without any appointment or prior notice
Set up a doorstep password
Most UK water companies run a Priority Services Register for customers who are older, disabled, or living with a long term health condition. When you sign up, you can set a doorstep password. Any genuine employee who visits your home will know the password. If they don't, close the door. Contact your water company to register. Thames Water, United Utilities, Severn Trent, Anglian Water, and Yorkshire Water all offer this service.
If you get one of these calls
Hang up
Don't engage. Don't press buttons on a recorded message. Don't try to waste their time. Just put the phone down. The longer you stay on the line, the more chance they have of getting something from you.
Don't share any details
Not your account number, not your bank details, not your address. Nothing. A real water company already has your information. They don't need to ring you up and ask for it.
Verify independently
If you think there might be a genuine issue with your account, ring your water company yourself using the number on your bill or on their website. Don't use any number the caller gave you. If the call was real, they'll have a record of it.
You can find your water company's contact details on your bill, their website, or through the Ofwat website at ofwat.gov.uk.
Report it
If you've lost money or shared personal details, report it to Action Fraud on 0300 123 2040 or through their website. For scam texts, forward the message to 7726 (free on all UK networks). Report the number on CallerCheck so other people can see who's behind it.
Block the number
Block it on your phone so the same number can't get through again. These operations rotate numbers, so you may need to block more than one. Both iPhone and Android let you do this from your recent calls list.
Our full call blocking guideAlready given them your details?
Don't panic, but move quickly. The sooner you act, the less damage they can do.
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1
Contact your bank
Ring your bank straight away using the number on the back of your card or dial 159. Tell them what happened. They can freeze your account, block the card, and watch for suspicious transactions. The faster you do this, the better the chance of stopping payments before they go through.
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2
Change your passwords
If you shared login details or the scammer directed you to enter anything online, change your passwords. Start with your email and online banking. Do this from a different device if you can.
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3
Check your statements
Go through your bank and card statements for the last few weeks. Look for any payments you don't recognise, even small ones. In the United Utilities cases, the first charges were around £12 before larger amounts went missing.
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4
Report to Action Fraud
Ring 0300 123 2040 or report online at actionfraud.police.uk. You'll get a crime reference number. Keep it. You may need it if you make a claim to get your money back through your bank.
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5
Tell your water company
Let your real water company know that someone has been using their name to scam people. They can put a note on your account and pass the information to their fraud team. Most major water companies, including Thames Water and United Utilities, have fraud reporting pages on their websites.
The short version
Red flags
- • Unexpected call claiming to be from your water company
- • Uses the phrase "the water board"
- • Threatens to cut off your water supply
- • Asks for bank details to process a refund or payment
- • Doorstep caller with no ID asking for money
What to do
- • Hang up and ring your water company yourself
- • Never give bank details over the phone
- • Always check ID at your front door
- • Report to Action Fraud (0300 123 2040)
- • Forward scam texts to 7726