As a business in England that pays for water and wastewater services, it’s important to understand how regulation affects your bills, your choice of supplier, and the protections available to you. In 2026, regulatory oversight from Ofwat continues to shape the market, from price controls to customer protections and efficiency incentives.
Here’s what you need to know:
1. Ofwat Sets the Rules for Charges and Competition.
Unlike a standard market where prices rise and fall purely on supply and demand, water charges for businesses are influenced by regulatory rules. Wholesale charges (the cost water wholesalers charge retailers) are set under strict rules from Ofwat and are capped within multi‑year price control periods (currently running to March 2030). This helps limit how much regional water companies can recover from customers through wholesale charges. Retail competition means most businesses can choose their retail supplier, helping encourage better service and cost deals. Retailers buy wholesale services from the regional water company and then sell retail packages to business customers.
In effect, you pay the wholesale charge (which is capped and regulated) plus a retail margin and service fee set by your retailer.
2. Protections for Businesses That Don’t Switch.
Not all business customers actively engage in the market each year. Many remain on default or “deemed” tariffs.
To protect these customers:
The Retail Exit Code (REC) sets price and non‑price protections on default tariffs. This limits how expensive these default tariffs can be compared with the underlying wholesale cost and ensures fair terms.
Ofwat periodically reviews REC protections to make sure they remain appropriate and fair, and consultations on updates are now part of the regulatory cycle.
For business customers that want to avoid price increases linked to default tariffs, actively engaging in the market — either by switching supplier or renegotiating contract terms — can often deliver better outcomes.
3. Wholesale (Infrastructure) Charges Are Only Part of the Bill.
Wholesale charges make up a significant slice of your overall cost because they fund the water network — pipes, treatment works, sewer systems, and upgrades.
In early 2026, many regional wholesalers published higher wholesale charges for the 2026–27 charging year, reflecting the latest price control determinations. These increases will show up on business bills unless you have a fixed contract with a retailer.
Ofwat’s price controls are designed not only to keep charges fair but also to ensure infrastructure investment continues — especially in areas like leakage reduction, environmental compliance, and long‑term resilience.
4. Greater Customer Voice and Regulatory Oversight from 2026.
From 1 April 2026, water companies are required to embed stronger customer involvement in strategic decision‑making, including how they set service and price outcomes that affect business customers. This is part of new regulatory powers Ofwat gained under recent legislation intended to amplify customer feedback in company planning.
For business customers, this means:
Companies need to demonstrate they genuinely consider customer views in decisions that affect bills and services. You can expect clearer, more transparent explanations of how decisions are made and how customer feedback shapes outcomes.
5. Data Access and Market Efficiency Reforms.
Ofwat is also consulting on centralised access to water consumption data for authorised third parties — a potential change that could benefit brokers, analytics firms, and businesses with sustainability or efficiency programmes. This would allow easier access to non‑household consumption data under a new governance framework, potentially helping organisations benchmark and optimise water usage.
6. Compliance and Enforcement Still Matter.
Ofwat doesn’t just set rules — it enforces them. For example, a business water retailer was recently required to refund customers after breaching price protections under regulatory codes. This shows that regulatory oversight is active and can deliver tangible financial benefits to customers when companies stray from compliance.
7. What This Means for Your Business.
In practical terms, as a business customer in 2026 you should:
- Understand your current contract — know whether you’re on a default or negotiated tariff and what protections apply.
- Review options annually — switching retailers or renegotiating can help you avoid wholesale increases baked into default tariffs.
- Engage on efficiency — tracking and managing water consumption is becoming more strategic and potentially better supported through data platforms.
- Use the regulatory environment to your advantage — protections like the REC and Ofwat’s monitoring of competitive outcomes mean you have backstops if prices or service quality deteriorate.
Regulation in 2026 continues to balance fair pricing, competitive markets, and investment imperatives — with Ofwat at the centre of ensuring business customers get value and protection. Understanding how the rules work can help you make smarter decisions about your supplier, your contracts, and your water strategy for cost control and sustainability.
Want help analysing how these regulatory changes affect your specific water contract or bill projections?
Let us know — we can provide personalised insights to help you stay ahead in 2026.
As a business in England that pays for water and wastewater services, it’s important to understand how regulation affects your bills, your choice of supplier, and the protections available to you. In 2026, regulatory oversight from Ofwat continues to shape the market, from price controls to customer protections and efficiency incentives.
Here’s what you need to know:
1. Ofwat Sets the Rules for Charges and Competition.
Unlike a standard market where prices rise and fall purely on supply and demand, water charges for businesses are influenced by regulatory rules. Wholesale charges (the cost water wholesalers charge retailers) are set under strict rules from Ofwat and are capped within multi‑year price control periods (currently running to March 2030). This helps limit how much regional water companies can recover from customers through wholesale charges. Retail competition means most businesses can choose their retail supplier, helping encourage better service and cost deals. Retailers buy wholesale services from the regional water company and then sell retail packages to business customers.
In effect, you pay the wholesale charge (which is capped and regulated) plus a retail margin and service fee set by your retailer.
2. Protections for Businesses That Don’t Switch.
Not all business customers actively engage in the market each year. Many remain on default or “deemed” tariffs.
To protect these customers:
The Retail Exit Code (REC) sets price and non‑price protections on default tariffs. This limits how expensive these default tariffs can be compared with the underlying wholesale cost and ensures fair terms.
Ofwat periodically reviews REC protections to make sure they remain appropriate and fair, and consultations on updates are now part of the regulatory cycle.
For business customers that want to avoid price increases linked to default tariffs, actively engaging in the market — either by switching supplier or renegotiating contract terms — can often deliver better outcomes.
3. Wholesale (Infrastructure) Charges Are Only Part of the Bill.
Wholesale charges make up a significant slice of your overall cost because they fund the water network — pipes, treatment works, sewer systems, and upgrades.
In early 2026, many regional wholesalers published higher wholesale charges for the 2026–27 charging year, reflecting the latest price control determinations. These increases will show up on business bills unless you have a fixed contract with a retailer.
Ofwat’s price controls are designed not only to keep charges fair but also to ensure infrastructure investment continues — especially in areas like leakage reduction, environmental compliance, and long‑term resilience.
4. Greater Customer Voice and Regulatory Oversight from 2026.
From 1 April 2026, water companies are required to embed stronger customer involvement in strategic decision‑making, including how they set service and price outcomes that affect business customers. This is part of new regulatory powers Ofwat gained under recent legislation intended to amplify customer feedback in company planning.
For business customers, this means:
Companies need to demonstrate they genuinely consider customer views in decisions that affect bills and services. You can expect clearer, more transparent explanations of how decisions are made and how customer feedback shapes outcomes.
5. Data Access and Market Efficiency Reforms.
Ofwat is also consulting on centralised access to water consumption data for authorised third parties — a potential change that could benefit brokers, analytics firms, and businesses with sustainability or efficiency programmes. This would allow easier access to non‑household consumption data under a new governance framework, potentially helping organisations benchmark and optimise water usage.
6. Compliance and Enforcement Still Matter.
Ofwat doesn’t just set rules — it enforces them. For example, a business water retailer was recently required to refund customers after breaching price protections under regulatory codes. This shows that regulatory oversight is active and can deliver tangible financial benefits to customers when companies stray from compliance.
7. What This Means for Your Business.
In practical terms, as a business customer in 2026 you should:
- Understand your current contract — know whether you’re on a default or negotiated tariff and what protections apply.
- Review options annually — switching retailers or renegotiating can help you avoid wholesale increases baked into default tariffs.
- Engage on efficiency — tracking and managing water consumption is becoming more strategic and potentially better supported through data platforms.
- Use the regulatory environment to your advantage — protections like the REC and Ofwat’s monitoring of competitive outcomes mean you have backstops if prices or service quality deteriorate.
Regulation in 2026 continues to balance fair pricing, competitive markets, and investment imperatives — with Ofwat at the centre of ensuring business customers get value and protection. Understanding how the rules work can help you make smarter decisions about your supplier, your contracts, and your water strategy for cost control and sustainability.
Want help analysing how these regulatory changes affect your specific water contract or bill projections?
Let us know — we can provide personalised insights to help you stay ahead in 2026.