EPA research outlines measures to halt the degradation of pristine water bodies

Date released: Apr 02 2013

New research sets out how to halt the dramatic loss of water bodies that are in pristine condition

The EPA today published a new research report shows that there has been a dramatic loss of waterbodies in pristine condition due to relatively low intensity activities such as field drainage and one-off housing, as well as pollution.  This new research, funded by the EPA and undertaken by a project team led by Bernadette Ní Chatháin, RPS, outlines strategies to protect pristine waterbodies from degradation.  Waterbodies in pristine condition - also known as high status waters - such as rivers with healthy populations of freshwater pearl mussel or juvenile salmon, require very high standards of protection. 

Dara Lynott, Deputy Director General, EPA said,

“The number of water bodies that are in pristine condition has declined significantly in recent decades.  This work, funded by the EPA STRIVE research programme, will contribute to the evidence base required in developing actions to prevent further loss to our cleanest rivers.”

 The key findings of the report are:

  1. There has been a dramatic loss of water sites that are in pristine condition in the period 1987–2008.
  2. Relatively low intensity activities can cause damage, for example, field drainage or fertilisation, one-off housing, forestry activities, wind farms, animal access to waters, and sheep dip pesticides.
  3. The key causes of ecological damage at pristine sites are domestic wastewater treatment systems (e.g. septic tanks and similar), and accidental releases of pollutants. 
  4. Halting the decline of our pristine sites is fundamental to maintaining spawning grounds for fish and providing a refuge for biodiversity under threat from our developed landscape.  
  5. Halting the loss of pristine waters can be done by addressing small impacts.  The research found that addressing small impacts is much more cost effective than restoring ‘poor’ quality water sites to ‘good’ water quality sites on a large-scale.

Commenting on the findings Fiona Murphy, RPS said,

“It is important to note that the smallest pressure can impact on waterbodies that are in pristine condition.  The input of a few grams of phosphorus or a slight increase in silt, for example, will have a much more damaging impact on the ecology of a pristine system than the same addition to an already polluted system. The research findings clearly point to the need to develop and implement measures to protect high-status, pristine water bodies from becoming degraded.” 

She continued, 

“We have identified two requirements in particular: much tighter planning controls for those areas which are fortunate to have pristine water catchments and a code of best practice which would set out control mechanisms in sensitive areas for the use of pesticides, the establishment and maintenance of forestry and currently unregulated activities such as overgrazing.”


This study was carried out in close collaboration with the EPA and Local Authorities in support of the implementation of the Water Framework Directive.  It will provide guidance and information to catchment managers and stakeholders.

The report has been published under the EPA STRIVE Programme 2007-2013. It is available to download from the EPA web-site Further information is also available on the High Status Ireland web-site.


Notes to Editors:

The study carried out a review of existing outputs of recent scientific studies, practises in other EU countries, interaction between water and non-water related legislation, provides guidance to local authorities, and suggests management strategies to ensure that high-status sites remain at high status. The study culminated in the development of a detailed literature review; Management Strategies for the Protection of High Status Water Bodies. A Literature Review together with the overall project report Management Strategies for the Protection of High Status Water Bodies.

Links:

 The EPA’s state of the environment report is available at Ireland’s Environment 2012 – An Assessment . Pages 46-50 are particularly relevant.