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2023 Bathing Water Profile for Llanddona

http://environment.data.gov.uk/wales/bathing-waters/data/bathing-water-profile/ukl1100-40140/2023:1

  • bathing water description
    The north east facing beach is long and sandy, located on the eastern side of the Red Wharf Bay area. It measures approximately 2.5 kilometres in length, although the bay itself extends for more than 4 kilometres. At low tide, a vast expanse of sand is exposed. The bathing water is located within the Anglesey Area of Outstanding Natural Beauty. The water quality sample point is located in line with the beach car park.
  • county name
    Isle of Anglesey
  • ea investigations statement
    Investigations will be undertaken where and when necessary e.g. where there are elevated bacterial results in the bathing water that cannot be simply explained due to weather conditions.
  • eso outfalls statement
    A project known as Event Duration Monitoring (EDM) was undertaken to install telemetry on Combined Sewer Overflows (CSOs) within 2km of a bathing water by 2020 so that Dŵr Cymru Welsh Water (DCWW) know when the CSOs are operating and can work to reduce spills. Llanddona Groeslwyd pumping station is included in this project howver drains west to Llanfaes Sewage Treatment Works near Beaumaris and away from Llanddona beach.
  • history statement
    Natural Resources Wales has developed a good working relationship with Dŵr Cymru Welsh Water and liaises regularly to identify problems that could affect bathing water quality. There are no water company assets that drain directly onto or near to the designated bathing water and no main sewage treatment works at this end of the bay.
  • local authority statement
    Natural Resources Wales continues to work together with Anglesey Council to maintain the high standard of water quality at Llanddona.
  • macro algae statement
    This bathing water does not have a history of large amounts of seaweed (macroalgae).
  • misconnections statement
    There are no known misconnections in the area.
  • phytoplankton statement
    Phytoplankton (microscopic algae) naturally increase in number at certain times of the year. This process is known as a phytoplankton bloom. Algal Blooms can occur at any beach during the bathing season and are usually noticeable by a surface scum. Blooms of the algae Phaeocystis do occur along this coastline during warm and calm weather in May and June. This typically produces a cream or brown scum along the water’s edge, but is otherwise harmless.
  • pollution risk forecasting
    false
  • pref label
    2023 Bathing Water Profile for Llanddona
  • streams rivers statement
    Streams are typically affected by sewage or industrial run off from further up the catchment. There may be reduced water quality in the area adjacent to where the streams enter the sea. However, it is not believed that the streams in the vicinity are currently a source of pollution to bathing water quality.
  • version string
    1
  • visible pollution statement
    Natural Resources Wales samplers make visual observations of the beach at every visit.  This includes assessments of sewage debris, animal faeces, litter and oil or tar. At Llanddona, data are available for the four year assessment period from 2021-2024. Sewage debris was not observed at this bathing water. Animal faeces was not noted at this site. Trace amounts of litter were observed at the bathing water on over fifty per cent of occasions. Oil and tarry residues were not noted at this site.
  • working with private owners statement
    Natural Resources Wales continues to work with private owners regarding potential pollution sources to the bathing water. This work involves where necessary, advisory mail drops, dye tracing, misconnection surveys and face to face meetings. There are no caravan sites in the immediate vicinity or on the catchment of the small stream draining to the beach. There are a number of private properties in the immediate catchment. It is not believed that these are a source of pollution to the bathing water at present. Sewage treatment at the hamlet of Wern y Wylan was historically an issue. There is currently no known environmental impact from sewage in this vicinity. Poorly maintained private sewage treatment facilities could be a source of pollution, therefore the registration of all private sewage systems in Wales was required by 30 June 2012. The primary aim of this exercise was to provide increased protection for the environment and sensitive features such as bathing water beaches. Where properties are identified in the catchment that are not on mains sewerage, Natural Resources Wales will endeavour to ensure registration has been made.
  • zoi description
    The natural drainage (hydrological) catchment surrounding the bathing water is primarily agricultural with isolated properties on the hillside below Llanddona. A small spring drains to the east of the beach and the Wern-y-Wylan stream drains from 2 kilometres inland to the west of Llanddona, through the hamlet of Wern-y-Wylan and onto the beach. To the west of the bay, the River Nodwydd drains into the bay.
  • bathing water

    Llanddona

  • local authority
    Sir Ynys Mon - Isle of Anglesey
  • source
  • standard language collection

    2023 40140:1

    • algae general statement
      Seaweed (macroalgae) and phytoplankton (microscopic algae) are a natural part of the marine and freshwater environment. Below we note whether these have been recorded in quantities sufficient to be a nuisance.
    • eso outfalls general statement
      The majority of sewers in Wales are “combined sewers” and carry both sewage and surface water from roofs and drains. A storm overflow operates during heavy rainfall when the sewerage system becomes overwhelmed by the amount of surface water. The overflow prevents sewage from backing up pipes and flooding properties and gardens. An emergency overflow will only operate infrequently, for example due to pump failure or blockage in the sewerage system.
    • local authority general statement
      Heavy rain falling on pavements and roads often flows into surface water drains or highway drains, ending up in local rivers and, ultimately, the sea. The quality of bathing water may be adversely affected as a result of such events.
    • pollution management general statement
      It is Natural Resources Wales' role to drive improvement of water quality at bathing waters that are at risk of failing European standards. It is natural for water to run off the land to the sea. Water quality at a bathing water is dependent upon the type and area of land (the catchment) draining to the water and the activities undertaken in that catchment. The following sections serve to highlight potential sources of pollution, conditions under which they may arise and measures being put in place to improve water quality.
    • stw outfalls general statement
      Discharges from sewage treatment works have improved substantially in Wales since the 1980s.
  • web res image
    ukl1100 40140 1 webres.jpg

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