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Compare Business Water Suppliers in Birmingham
Compare licensed water retailers for Birmingham businesses, supplied wholesale by Severn Trent and South Staffs Water.
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Home / Areas we cover / Birmingham
Last updated August 2026
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Compare Business Water Suppliers in Birmingham
Birmingham has tens of thousands of non-household water customers across the West Midlands, supplied wholesale by Severn Trent Water, with South Staffs Water covering clean water in parts of the urban area. Despite the market opening in 2017, most are still with whichever retailer they were assigned by default.
You can switch retailer. Birmingham businesses have had that right since April 2017. This page covers where Birmingham water costs come from, how the wholesaler and retailer split works, and where overpayment usually hides on a Birmingham bill.
| Wholesale supply | Severn Trent Water for most of Birmingham, with South Staffs Water supplying clean water in parts of the city and Black Country. |
|---|---|
| Contracting | Single sites can contract directly with retailers, and multi-site operators can contract centrally across the whole estate. |
| Biggest savings levers | Surface water drainage on industrial sites, reviews of default tariffs never renegotiated, and trade effluent banding checks. |
| Commercial mix | Manufacturing, light industrial, hospitality and professional services dominate, and each has a different water profile. |
| Market opened | England in 2017 and Scotland in 2008. |
| Licensed retailers | Around 20 are licensed by Ofwat to supply non-household water. |
Where the money goes
Why Birmingham businesses pay more for water than they should
Your wholesaler is set by postcode and never changes. Severn Trent, or South Staffs Water in some areas, owns the pipes and sets the wholesale rate. The retailer is the part you choose, and it competes on the retail layer, billing accuracy and the audit work behind your invoices.
When the market opened in 2017, most Birmingham businesses stayed with the default retailer their supply was assigned to. That tariff was rarely the sharpest available then, and the position has not improved for anyone who never compared it since.
The commercial mix matters too. Industrial estates carry surface water drainage on large roofs and yards, manufacturers carry trade effluent banding that can run above actual loading, and hospitality runs high, steady volumes on tariffs set flat.
Where it shows up
The five areas Birmingham businesses overpay
Where Birmingham businesses overpay and why it matters.
Default tariffs never renegotiated
Most Birmingham supplies still sit where they were assigned at market opening. A default tariff is priced for the retailer rather than the customer, and it stays that way until someone compares it.
Surface water drainage on industrial sites
West Midlands industrial estates often drain to private soakaways, attenuation or balancing ponds rather than the public sewer, yet default billing assumes everything goes to sewer. A drainage survey showing where rainwater actually goes is the evidence that corrects it.
Trade effluent banding
The region has a deep manufacturing base, and inherited effluent bandings often overstate actual organic or chemical loading. Re-banding requests are usually accepted with evidence.
Split wholesaler billing
Some Birmingham postcodes take clean water from South Staffs Water while Severn Trent handles the wastewater. Charges split across two wholesalers, and errors hide in the join.
Estimated readings on industrial meters
Yard-mounted meters on busy sites can go unread for a year or more. Estimates drift away from actual use, and a physical read is what corrects the difference.
Results
Case studies
Surface water drainage audit across the estate uncovered £35,364 in refunds and £8,800 a year in ongoing savings.
Worth knowing
Eligibility and how the market works
Every non-household premises in Birmingham is eligible to switch retailer through the open market run by Open Water. England opened in April 2017 and Scotland has been open since 2008.
Your wholesaler is set by postcode. Most of the city sits with Severn Trent Water, and parts take clean water from South Staffs Water. Wholesale charges are the same whichever retailer bills you, so the comparison is about the retail layer and the accuracy of what sits behind it. Most retailers can supply across both wholesale areas.
The market
Switch water supplier for your Birmingham business
Yes. England’s non-household water market opened to competition in April 2017 and Scotland’s opened in 2008, so every Birmingham business can choose a different water retailer. Wholesale supply still comes from your regional water company; only the retailer (the company that bills you and reads your meter) changes.
The 12 retailers below are all licensed by Ofwat to supply non-household water. Pricing, service and sector experience vary from retailer to retailer.
Choose your route
Routes to procurement
Three ways Birmingham businesses typically bring a new water contract in. Each comes with its own trade-off between control, effort and how sharp the price lands.
Direct with a retailer
The business signs straight with a licensed retailer. Best for a single site that wants a sharper rate. You handle the comparison and the switch yourself.
Estate-wide contract
Multi-site operators across the West Midlands can put every site on one central contract with one retailer, even where sites sit in different wholesaler regions.
Broker-led market test
A water broker compares the market for you, handles the paperwork and manages the switch from start to finish. Nothing changes on site.
Why choose The Business Water Shop
- Award-winning independent brokerage, not owned by or tied to any water retailer.
- Rated 5 stars on Google and 5 stars on Trustpilot by UK businesses.
- Experts with experience in business water for businesses across Birmingham and the West Midlands.
- We compare quotes from up to 14 licensed retailers.
- We handle the whole switch, from the comparison and paperwork to the supplier contact.
- One point of contact for multi-property portfolios.
Questions
Birmingham business water FAQs
Who supplies wholesale water to my Birmingham business?
Most of Birmingham and the surrounding West Midlands is supplied by Severn Trent Water. Parts of the urban area, including some Black Country postcodes, take clean water from South Staffs Water. Your wholesaler is determined by postcode rather than by the retailer you choose.
Can a Birmingham business switch water supplier?
Yes. Since the non-household market opened in April 2017, every business in England can choose its water retailer. The retailer bills you and reads the meter, while the wholesaler still owns the pipes and the supply.
How do I get a quote?
Send a recent water bill for your Birmingham site. The SPID, annual volume and current retailer are all on it. We come back within two working days with an alternative quote and a flag if anything looks worth checking on drainage banding or effluent charges.
Does switching change my Severn Trent supply?
No. The pipes, the pressure and the water itself stay exactly as they are. A switch changes the company that bills you, and nothing physical happens at the premises.
How long does a switch take?
Typically two to six weeks from signed contract, and a broker-led market test can have quotes back within days. The wholesaler runs the pipes and the meter throughout, so there is no installation, no engineer visit and no interruption to supply.
Can trade effluent banding be reduced?
Often, with evidence. Banding is set when a consent is first issued and rarely revisited, so if your process or loading has changed, the band can be reviewed with the wholesaler and corrected. Surface water drainage assumptions on industrial yards can be challenged the same way.
We run several sites across the West Midlands. Can they go on one contract?
Yes. Retailers operate nationally, so a group can consolidate sites in different wholesaler regions onto a single retailer, one contract and one point of contact.
