Thames Water — one of the largest water companies in the country — has spent months in the headlines over the state of its finances. If you run a business, it’s natural to wonder what a story like that means for you. So let’s start with the reassuring part, and then get to the bit most businesses don’t realise.
First, the good news
The water isn’t going anywhere. The pipes, reservoirs and treatment works that actually deliver your supply are owned and maintained by the regional wholesaler, and they carry on regardless of what happens to any one company’s balance sheet. A supplier’s financial difficulties are a serious matter, but they don’t turn off the taps.
The bit worth knowing: you can choose your water retailer
Here’s what often gets overlooked. Since the business water market in England opened up, the company that owns the infrastructure and the company that sends your bill are two different things. The regional wholesaler still looks after the network. But the retailer — the one you contract with for billing, meter readings, account queries and service — is yours to choose.
In other words, if you’re not happy with the service, the billing or the price, you’re not stuck. You can switch retailer without a drop of disruption to your actual supply. Nothing physical changes; no one digs up your car park. It’s an administrative switch, not a plumbing job.
Why businesses actually make the move
People expect the reason to be a cheaper unit rate, and yes, there are savings to be had. But for businesses with more than one site, the practical gains are often the bigger prize:
- One consolidated bill across every site, instead of a drawer full of separate invoices.
- Accurate, readable billing — and a named contact who actually picks up the phone.
- Water audits and benchmarking that flag leaks, overcharges and sites quietly using far more than they should.
- Rebates and allowances you may be entitled to and have never claimed.
Water is becoming a governance question, not just an operational one
More and more, how a business manages its water says something about how well it’s run. A retailer that gives you proper usage reporting and efficiency advice helps you cut consumption, meet sustainability commitments and avoid unwelcome surprises. Reviewing your arrangements every couple of years — before there’s a problem, not after — is simply good housekeeping.
Where we come in
As a whole-of-market broker, we aren’t tied to any single water retailer. We’ll review what you have now, tell you honestly whether you can do better on price or service, handle the change-of-occupancy and paperwork, and manage the switch from start to finish — with no interruption to your supply. Water sits alongside the electricity, gas and waste we already look after for businesses, so it’s often one more thing we can quietly take off your plate.
If the recent headlines have made you glance at your own water contract, that instinct is a good one. Get in touch and we’ll take a proper look for you.
Will Thames Water’s financial situation interrupt my business water supply?
For most businesses, financial headlines about Thames Water do not mean that water or wastewater services will suddenly stop. The physical network, including water mains, sewers, treatment works and reservoirs, must continue to be operated so that essential public water and wastewater services are maintained.
It is important to separate two roles. Thames Water is the regional wholesaler for businesses in its appointed area, meaning it operates the underlying water and wastewater network. Your business may also have a separate retailer, which handles customer service, bills, meter reads and account management.
If you are concerned about an invoice, contract or service issue, first establish whether the company named on your bill is Thames Water or an independent business water retailer. The answer determines who should deal with your query, but it does not change the pipes and treatment infrastructure serving your premises.
Who is responsible for your business water service?
- The wholesaler: The regional network operator supplies water to the premises, maintains the public network, manages many operational incidents and treats wastewater. In the Thames Water region, Thames Water is generally the wholesaler.
- The retailer: Your chosen retailer provides the business account, issues bills, processes meter information, manages payments and supports contract queries.
- Your business: The occupier or property owner may be responsible for private pipework, internal leaks and keeping account details accurate, depending on the lease and site arrangements.
This split is why changing retailer does not replace your local water network or alter the quality of water delivered to the building. A retailer switch changes the commercial relationship and account administration, while the wholesaler continues to deliver the underlying service.
Can every business switch water retailer?
Most eligible non-household customers in England can choose their water retailer. This includes many offices, shops, warehouses, schools, charities, manufacturers and multi-site organisations. The competitive retail market for eligible business customers in England opened in April 2017.
Eligibility is not determined simply by the size of your water bill. It depends on whether the premises is classed as non-household and is supplied through the relevant English market arrangements. Household customers cannot use the business water retail market, and arrangements in Wales differ from those in England.
If a business has several locations, each site may have a different wholesaler, supply point, meter arrangement or existing retailer. A review should therefore check every address rather than assuming that one retailer or contract applies across the whole estate.
Before switching, confirm the legal occupier, the supply address, the current retailer and any outstanding change-of-occupancy issue.
What happens when a business switches water retailer?
- Review the current account: Check the supply addresses, customer reference numbers, meter details, charges and the named legal entity.
- Compare suitable retailers: Assess customer support, billing capability, payment options, reporting, water-efficiency services and any available pricing arrangement.
- Choose and authorise the new retailer: The business normally provides authority for the new retailer or appointed broker to manage the change.
- Validate market information: Retailer and wholesaler records are checked so that the correct premises and meters are transferred.
- Receive final and future bills: The previous retailer issues its closing bill, while the new retailer takes over account administration.
The water supply itself continues through the same local network. However, businesses should provide accurate meter reads where requested and resolve disputed occupancy dates early, as incorrect account data can delay administration or lead to billing corrections.
Which organisations oversee business water in England?
Ofwat is the economic regulator for water and wastewater companies in England and Wales. It regulates the framework within which wholesalers and retailers operate, including the non-household retail market in England.
MOSL, the Market Operator Services Limited, operates central market services for the English non-household water market. Its market processes support the exchange of supply and customer information between wholesalers and retailers.
CCW, the Consumer Council for Water, is the independent voice for water consumers in England and Wales. It provides information and can help customers understand routes for raising unresolved complaints.
Businesses dealing with Thames Water headlines should use these organisations to distinguish regulatory information from news coverage. For a billing or service complaint, raise the matter with the retailer first, keep copies of bills and meter reads, and then follow the retailer’s formal complaints process if the issue remains unresolved.