Complaints about water companies in England and Wales increased sharply over the past year, with the number of grievances registered with the industry watchdog rising by 84%. Concerns from households about the affordability of water services surged by 129% during the 2025-26 period, while dissatisfaction related to price increases grew by 54%.

The surge in complaints coincides with a regulatory decision permitting water companies to raise customer bills by 36% between 2025 and 2030. This price adjustment has sparked significant consumer backlash, as reflected in the rising volume of complaints.

Among water providers, Thames Water and South West Water recorded the highest number of complaints, coupled with poor performance in handling customer issues. In contrast, Portsmouth Water and Bristol Water were the only companies rated positively for their complaint management.

Complaints submitted directly to water companies also rose substantially, increasing by 56% over the same timeframe. The consumer advocacy organization CCW described the escalation in grievances as troubling and indicative of growing public dissatisfaction with water service affordability and quality.

The data underscores mounting pressure on water companies as they adjust pricing structures, while regulators and consumer groups continue to monitor service standards and customer impacts amid the ongoing financial changes in the sector.