River trust says anaerobic digesters 'aren't regulated properly'

Calls have been made for better regulation over the use of anaerobic digesters in Wales following a series of pollution incidents.

Incidents have seen the machines, which break down animal and food waste to produce gas for energy, fail and leak a slurry-like substance into rivers.

The Welsh Government said it would review the machines' impact on farms.

Afonydd Cymru chief executive, Dr Stephen Marsh-Smith, said more scrutiny of the industry was needed.