2014 Bathing Water Profile for Cilborth
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This is a small secluded pretty cove to the north of Llangrannog and is frequently photographed. It lies next to the designated bathing water at Llangrannog. Measuring approximately 100 metres in width, with interbedded mudstone and sandstone cliffs on either side, the sandy, sheltered beach has a distinctive large rock on the shore’s edge. The bathing water can either be accessed at low tide from Llangrannog or via the coastal path. The coastal waters and coastal belt are designated as the Cardigan Bay Special Area of Conservation and the Aberarth Cerreg Wylan Site of Special Scientific Interest, confirming the high conservation status of the area. Natural Resources Wales's designated sample point is located to the centre of the beach.
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Ceredigion
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Natural Resources Wales continues to work with Ceredigion County Council and Dŵr Cymru Welsh Water to establish sources of pollution around the beach. This work has recently targeted the agricultural sector, providing advice and guidance on best farming practices. Inspections are carried out by Natural Resources Wales in partnership with the local authority and the water company. These are carried out pre-season (before the 1st of May) and mid-season if required (during the bathing water season).
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Cilborth is potentially impacted by numerous storm, emergency and surface water outfalls, both along the foreshore and within the main freshwater inputs at Llangrannog, particularly during heavy rainfall. Within the catchment of Cilborth and Llangrannog bathing waters, there are numerous storm, emergency and surface water outfalls that discharge to the Nant Hawen. These protect domestic properties in Llangrannog from being flooded by sewage, during heavy rainfall. Sewer overflows operating during and following periods of heavy rain, can result in a deterioration in the quality of the water in the river and at both Cilborth and Llangrannog bathing waters. In recent years, telemetry equipment has been installed in most of the overflows by the water company. This technology has allowed Dŵr Cymru Welsh Water to respond to warnings of blockages in the sewage system and has reduced the number of actual and potential overflows.
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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.
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Natural Resources Wales and Ceredigion County Council have worked together to improve the bathing water quality at Llangrannog and Cilborth for a number of years.
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This bathing water does not have a history of large amounts of seaweed (macroalgae).
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Wrongly connected waste water pipes can affect the water quality of rivers and the sea. Natural Resources Wales has worked with Ceredigion County Council and Dŵr Cymru Welsh Water to trace the sources of pollution from household toilet and utility misconnections, to the private and public surface water system that discharges into Llangrannog. Modern sewerage systems have two separate systems, one takes foul sewage to sewage treatment, the other takes rainwater runoff through surface water drains to rivers, lakes and the sea. Misconnections occur when waste water pipes are plumbed into surface water drains instead of the foul water sewerage system. This can give rise to pollution when the waste water is discharged directly to the environment through the surface water drain. For example, a washing machine or toilet may be incorrectly plumbed so that it discharges to the surface drain rather than the foul sewage drain.
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Phytoplankton (microscopic algae) naturally increase in number at certain times of the year. This process is known as a phytoplankton bloom. These algal blooms can occur at any beach during the bathing season and are usually noticeable by a surface scum. This beach does not have a history of such blooms.
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2014 Bathing Water Profile for Cilborth
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Streams are typically affected by sewage or industrial run off from further up the catchment. Cilborth is influenced by a small unnamed stream and the larger river, the Nant Hawen that flows directly onto Llangrannog beach. High flows in streams, rivers and sewers due to heavy rainfall affects water quality in the bay.
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Dŵr Cymru Welsh Water have recently completed a significant investment programme and provided a main drainage system to residential properties and a school at Pontgarreg. Llangrannog Sewage Treatment Works discharges to the west side of the adjacent Llangrannog beach, below the mean low water mark. Disinfection through membrane filtration treatment of the effluent, protects the bathing water quality.
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Should the agricultural practices in the catchment be seen to be causing an impact on the bathing waters at Cilborth, Natural Resources Wales will endeavour to work with the farming community to reduce the risks.
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Should industrial practices in the catchment be seen to be causing an impact on the bathing waters at Cilborth, Natural Resources Wales will endeavour to work with them to reduce the risks.
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Natural Resources Wales continues to work with private owners to address potential pollution sources to the bathing water. This work involves where necessary, advisory mail drops, dye tracing, misconnection surveys and face to face meetings. Poorly maintained private sewage treatment facilities could be a source of pollution, therefore the registration of all qualifying private sewage systems in Wales was required by 30 June 2012. The primary aim of this exercise is to provide increased protection for the environment and sensitive features such as bathing water beaches. Where discharges from properties are identified in the catchment that are not on mains sewerage, Natural Resources Wales will endeavour to ensure registration has been made, unless already a permitted discharge.
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The natural drainage (hydrological) catchment surrounding the bathing water is predominantly agricultural with some holiday homes, caravan sites and residential properties situated in the valley behind Llangrannog. The Nant Hawen enters the sea at Llangrannog Bay, which drains agricultural land and runs through the villages of Pontgarreg and Llangrannog.
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2014 38685:1
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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.
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The majority of sewers in England and 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.
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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.
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It is the Environment Agency and 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.
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Discharges from sewage treatment works have improved substantially in England and Wales since the 1980s.
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