CEO Ruth Jefferson received a 14 per cent base salary increase in October, from £590,000 to £670,000. In December 2025, water industry regulator Ofwat concluded that Wessex Water had failed to design, construct, operate and maintain its wastewater treatment works properly. Water quality in Somerset areas served by Wessex Water has been criticised in some cases. Wessex Water have said that they invested heavily in improved sewage treatment in and around Weston-super-Mare. They added that the Environment Agency is ultimately responsible for river and sea water quality, as there are multiple factors that can affect it including agricultural run-off and faeces from wildlife like seagulls.