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bathing water description |
Measuring just over 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 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. A small unnamed stream and the
Nant Hawen enter the sea at Llangrannog Bay, both of which drain agricultural land.
The water quality sample point is located to the centre of the beach.
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county name |
Ceredigion |
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eso outfalls statement |
Llangrannog is potentially impacted by numerous storm, emergency and surface water
outfalls, both along the foreshore and within the main freshwater inputs particularly
during heavy rainfall.
Within the catchment of Llangrannog bathing water, 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 Llangrannog bathing water.
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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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.
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investigations statement |
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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local authority statement |
Natural Resources Wales and Ceredigion County Council have worked together to improve
the bathing water quality at Llangrannog for a number of years.
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macro algae statement |
This bathing water does not have a history of large amounts of seaweed (macroalgae). |
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misconnections statement |
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 statement |
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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source |
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stw outfalls statement |
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 beach, below
the mean low water mark. Disinfection through membrane filtration treatment of the
effluent, protects the bathing water quality.
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version string |
1 |
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zoi description |
The natural drainage (hydrological) catchment surrounding the bathing water is predominantly
agricultural with some holiday homes and residential properties situated in the valley
behind the bay. The Nant Hawen is the main river that discharges onto the beach. Its
catchment drains both a large agricultural area and the villages of Llangrannog and
Pontgarreg.
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bathing water |
ukl1402-38680 |
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local authority |
Sir Ceredigion - Ceredigion |
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standard language collection |
2014-38680:1
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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.
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eso outfalls general statement |
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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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.
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pollution management general statement |
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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stw outfalls general statement |
Discharges from sewage treatment works have improved substantially in England and
Wales since the 1980s.
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web res image |
ukl1402-38680_1-webres.jpg |
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