Thursday 11 March 2026
Today, Ofwat have announced the outcome of an investigation on Welsh Water’s operations of its wastewater treatment and sewerage network. This follows similar investigations across other water companies in England. Ofwat has concluded unacceptable operation of Welsh Water’s wastewater network, and failure to operate, maintain and upgrade the system.
Afonydd Cymru concerns
We have consistently raised concerns with respect to wastewater operations by Welsh Water. In 2023, Afonydd Cymru worked with Professor Peter Hammond in relation to wastewater treatment performance across Wales, including Cardigan. We have consistently raised concerns on Welsh Water’s performance; this has already delivered enhanced investment on wastewater assets, tightened permits and a revised compliance process with Natural Resources Wales.
Ofwat Settlement
As a result, Welsh Water have now agreed a £44.7m settlement, of which £40.6m will fund further investment on storm overflow assets. Funding will also tackle groundwater entering the sewer network and creating a Cymuned Natur Fund to support community environmental projects.
Welsh Water have confirmed to Afonydd Cymru today that we will directly receive £2m of this settlement to deliver river restoration activity to support migratory fish passage in Wales. Welsh Water already has obligations to remove barriers to migration caused by its own assets – no funding from this settlement will go towards their own obligations.
Afonydd Cymru will continue to challenge Welsh Water, and all other sectors, on their environmental performance in Wales. We have a vision for clean and healthy rivers for every community in Wales.