2023 monitoring calendar and results
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Source: Natural Environment
cfu = colony forming units
< = is less than the given value
Results from Jersey are submitted to the Marine Conservation Society for inclusion in the UK Good Beach Guide.
The above ratings are a weekly snapshot of bathing water quality, however, the full classification is calculated annually for each bathing water site, based on all of the samples from the previous four years.
Excellent Water Quality: Indicates this sample meets the following standard:
less than or equal to 250 Escherichia coli per 100ml
less than or equal to 100 Intestinal enterococci per 100ml
Good Water Quality: Indicates this sample meets the following standard:
less than or equal to 500 Escherichia coli per 100ml
less than or equal to 200 Intestinal enterococci per 100ml
|||Poor water indicates values are above 500 Escherichia coli per 100ml and above 200 Intestinal enterococci per 100ml|
We monitor sea water as part of the Bathing Water Directive.
The quality of sea water around Jersey's coast is important for a number of reasons:
the health of the public swimming in those bays and for those involved in water sports
detection of pollution within the environment
providing information to the aquaculture industry, for example oyster or mussel farming
Jersey prides itself on having some of the cleanest beaches in Europe. Results from Jersey are submitted to the Marine Conservation Society for inclusion in the UK Good Beach Guide
2023 Sea water monitoring schedule
The 2023 season runs from Monday 15 May to Tuesday 26 September, with the most recent results reported in the table at the top of this page.
|May||15 and 16 May 2023|
|May||22 and 23 May 2023|
|May||30 and 31 May 2023|
|June||5 and 6 June 2023|
|June||12 and 13 June 2023|
|June||20 and 21 June 2023|
|June||26 and 27 June 2023|
|July||3 and 4 July 2023|
|July||10 and 11 July 2023|
|July||17 and 18 July 2023|
|July||24 and 25 July 2023|
|August||1 and 2 August 2023|
|August||10 and 11 August 2023|
|August||14 and 15 August 2023|
|August||21 and 22 August 2023|
|August||29 and 30 August 2023|
|September||4 and 5 September 2023|
|September||11 and 12 September 2023|
|September||18 and 19 September 2023|
|September||25 and 26 September 2023|
The 16 bays around Jersey monitored include:
- St Brelade Bay
- Le Braye
- Greve de Lecq
- Bonne Nuit
- La Haule
- Victoria Pool
- Havre des Pas
- Green Island
- Bouley Bay
For ensuring accuracy and consistency a duplicate sample and analysis is carried out each week by the Official Analysts laboratory.
Quality of sea water
The sampling of sea water is carried out by officers from Natural Environment Department based at Howard Davis Farm, Telephone +44 (0) 1534 441600. If you observe pollution on the beach or in the sea, call the Pollution hotline on +44 (0) 1534 709535.
Water safety for swimming
The bathing water data is provided to Public Health each week and they make the decision in consultation with other stakeholders. If the results are poor, they will notify the media recommending swimming is not advised and suitable signage would be provided at the relevant bays. To contact Public Health call +44 (0) 1534 445808 or email firstname.lastname@example.org.
Sea water profiles
A profile has been produced Jersey's monitored sea waters. Each profile includes:
a photograph, description, map of the sea water and surrounding area
an identification of potential sources of pollution and measures to reduce pollution
the telephone number to report water pollution and contact details for further information
Archirondel sea water profile
Beauport sea water profile
Bonne Nuit sea water profile
Bouley Bay sea water profile
Green Island sea water profile
Greve de Lecq sea water profile
Grouville sea water profile
Havre des Pas sea water profile
La Haule sea water profile
Le Bray sea water profile
Plémon sea water profile
Portelet sea water profile
Rozel sea water profile
St Brelade's Bay sea water profile
Victoria Pool sea water profile
Watersplash sea water profile
When sea water quality monitoring started
Monitoring started in 1992. We now classify our beaches following guidance from the European Directive and by the World Health Organisation.
From 2015 bathing water classifications throughout Europe are based on sampling data collected over 4 years.
Historic data is
available from Natural Environment. Call +44 (0) 1534 441600 or email email@example.com.