UK waters recovering from acid rain

New data from studies of the UK’s most sensitive waterways has indicated a recovery from the effects of acid rain. Levels of acidic sulphur in upland lakes and streams have generally halved over the last 15 years, resulting in a revival in fish, plant and insect species. Acid rain is attributable to emissions of sulphur dioxide and nitrogen oxide, and it is the cutting of these materials that has led to the recovery.

The UCL research focused on twenty-two of the UK’s most sensitive waters which have been monitored continuously since 1988.

"It will take time for these sensitive waters to recover from the devastating effects of acid rain. So it is extremely encouraging that today's research suggests that they are starting to recover,” said Ben Bradshaw, Fisheries and Local Environmental Quality Minister.

"The research shows that the measures we have put into place to control emissions of sulphur dioxide and nitrogen oxides are starting to pay off. The switch from coal to gas in both power generation and in the home, while being mainly for economic reasons, has also meant a lot less pollution,” he added.

Despite the progress, researchers warned that the situation will require continued monitoring and assessment.

Professor Rick Battarbee, UCL Department of Geography said; “There is a risk that a wetter climate in the uplands in future might offset some of the recovery we are now seeing. Continued careful monitoring at key sites will be essential to assess future responses to these different pressures"