Overview
- The regulator has consulted on rule changes that would let water companies raise prices in periods of scarcity through seasonal ‘surge’ charges or increasing‑block tariffs to discourage non‑essential use.
- Ofwat on August 13 provisionally approved about £3.4 billion of extra spending and gave five suppliers permission to raise charges, with a public consultation open until September 24 and a final decision due in December.
- Pilot trials run by companies such as Anglian Water covered thousands of households and reported notable behaviour change, for example almost half of 14,000 trial participants cut their usage under surge rates.
- Campaigners and some politicians warn variable tariffs risk creating a ‘water poor’ group and say customers could be penalised for companies’ past underinvestment, while consumer groups call for strong safeguards for vulnerable households.
- Wider rollout would require far higher smart‑meter coverage than today — roughly 12% of homes had meters in late 2025 — so implementation, protections to separate essential from discretionary use, and monitoring of company performance are likely to determine whether and when the rules take effect.