Thames Water has confirmed that household bills in Walton-on-Thames, Surrey, will increase from 1 April 2026. This price change is part of the company’s AMP8 (2025–2030) turnaround programme — a five-year plan to fund major upgrades to the local water network and to reduce sewage discharges into the River Thames.
The extra money will fund a turnaround project that includes replacing old water mains and rolling out smart meters in parts of Surrey, measures Thames Water says are intended to help detect leaks and improve local network performance. These upgrades aim to address frequent leaks and low-water-pressure issues that have affected local residents in recent years. According to the company’s ‘Statement of Significant Change’, the investment is intended to modernise infrastructure that the company and regulators say has been underfunded for a long time.
The increase takes effect under the PR24 price-review framework overseen by the industry regulator Ofwat. While the industry average rise cited for 2026 is about 5.4%, Thames Water is moving toward significantly higher planned investment over the AMP8 period, with company plans indicating a step-up in spending through to 2030. If Thames Water fails to meet its PR24 performance commitments (for example on reducing sewage discharges or fixing leaks), mechanisms in the PR24 framework could require the company to return money to customers through outcome delivery incentives.
For residents worried about paying their bills, Thames Water’s WaterHelp scheme can offer support: customers whose water bill is more than 5% of their net income (and who meet occupancy criteria) may be eligible for a 50% discount. There is also support available through the WaterSure programme for households on certain benefits with high water need (for example larger families or some medical conditions). Customers can view their specific new charges or ask for personal advice by logging into their online account or by contacting Thames Water (WaterHelp applications and enquiries: 0800 980 8800).
Most households in the Walton-on-Thames area can expect to see average monthly increases in the range of about £3–£7 depending on whether they are metered and on their water usage, according to regional impact estimates published in preparatory material for the 2026/27 charges.
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