Water prices rise again on 1st April 2026 — what UK businesses should do now
Wholesale water prices rose roughly 14% in April 2024 and 22% in April 2025. Ofwat confirmed in December 2024 that water costs will keep rising until at least April 2029 — cumulatively around 83% above 2023 levels. April is the worst time to negotiate. Q1 is the window to review.
The trajectory: up, and confirmed
Two big numbers to anchor on:
- April 2024: wholesale +14%, retail +18% (regional variation).
- April 2025: wholesale +22%, retail +21%.
- December 2024: Ofwat confirmed that water costs will keep rising until at least April 2029.
- Cumulative by 2029: water costs expected to be approximately 83% above 2023 levels.
The increases are funding major investment in UK sewerage infrastructure to reduce pollution and river contamination.
Why Q1 is the time to act
Water price increases land on 1st April every year. Reviewing your contract before April gives you more control over structure, budget certainty and bespoke terms. After April, retailers are busy passing on increases and bespoke terms become harder to land.
What businesses are focusing on
At current price levels, the focus has shifted from purely "lowest unit rate" to a broader set of priorities — contract structure, proactive account management, budget certainty, billing audits, and consumption reduction.
What good looks like in 2026
- Bill audit of the last two years (recover errors).
- Smart meter or logger install where you don't already have one.
- Open competition across business water retailers.
- Contract structure that survives the next three Aprils.
- In-life account management for billing and anomalies.
Bottom line
Water has stopped being a cost line you can ignore. The cheapest action is the one taken now — before April.
Water prices rise again on 1st April 2026 — what UK businesses should do now — quick questions
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