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L'înformâtion et les sèrvices publyis pouor I'Île dé Jèrri

Sea water monitoring

​​​​Quality of sea water

The sampling and analysis of sea water is carried out by the Department of the Environment. The quality of sea water around Jersey’s coast is important for a number of reasons:

  • the health of the public swimming and those involved in water sports
  • pollution of the environment
  • Jersey tourism prides itself on having some of the cleanest beaches in Europe
  • aquaculture industry eg oyster or mussel farming

Most popular beaches

Sea water at 16 of the most popular beaches around Jersey is monitored weekly between mid May to the end of September. Monitoring and analysis of samples conforms to strict European standards.

Results from Jersey are independently verified by the Centre for Research into Environment and Health (CREH) and submitted to The Marine Conservation Society for inclusion in the UK Good Beach Guide. CREH produce an annual report of the Island’s sea water.

2015 monitoring calendar and results

Article 3(1) of the revised Bathing Water Directive requires sea waters to be identified on an annual basis. The length of the sea water season is to be defined each year.

The 2015 season will start on Tuesday 19 May and finish on Tuesday 29 September.

It is also a requirement to establish a monitoring calendar to identify days when water samples will be collected.

Download Week 20 results 28 / 29 September (size 66kb)

Download Week 19 results 21 / 22 September (size 67kb)

Download Week 18 results 14 / 15 September (size 68kb)

Download Week 17 results 7 / 8 September (size 72kb)

Download Week 16 results 1 / 2 September (size 68kb)

Download Week 15 results 25 / 26 August (size 80kb)

Download Week 14 results 17 / 18 August (size 69kb) 

Download Week 13 results 10 / 11 August (size 69kb)

Download Week 12 results 3 / 4 / 5 August (size 72kb)

Download Week 11 results 27 / 28 July (size 69kb)

Download Week 10 results 20 / 21 July (size 67kb)

Download Week 9 results 13 / 14 July (size 67kb)

Download Week 8 results 6 / 7 July (size 19kb)

Download Week 7 results 29 / 30 June (size 20kb)

Download Week 6 results 22 / 23 June (size 70kb)

Download Week 5 results 15 / 16 June (size 72kb)

Download Week 4 results, 8 / 9 June (size 71kb)

Download Week 3 results, 1 / 2 June (size 70kb)

Download Week 2 results, 26 / 27 May (size 72kb)

Download Week 1 results, 19 / 20 May (size 19kb)

Download Bathing Water Season and Calendar 2015 (size 94kb)

2014 sea water quality ​results

During the 2014 summer season all 16 of Jersey’s sea waters passed the European Imperative Standard, whilst 13 out of the 16 further passed the stringent European Guide Standard.

The 16 sea waters that passed the 'Imperative standard'

  • Archirondel
  • Beauport
  • Bonne Nuit
  • Bouley
  • Green Island
  • Grève de Lecq
  • Grouville
  • Havre Des Pas
  • Le Braye
  • La Haule
  • Plémont
  • Portelet
  • Rozel
  • St Brelade
  • Victoria Pool
  • Watersplash

The 13 sea waters that passed the more stringent 'Guide standard'

  • ​​Archirondel
  • Beauport
  • Bouley
  • Green Island
  • Grève de Lecq
  • Grouville
  • ​Havre des Pas
  • Le Braye
  • ​Plémont
  • Portelet
  • St Brelade
  • Victoria Pool
  • ​Watersplash

Download Jersey Bathing Water Report 2014 Executive Summary (size 263kb) 

Sea water profiles

A profile has been produced for each of Jersey's monitored sea waters. As well as providing useful information they are a requirement of the revised Bathing Water Directive. 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

Download Archirondel profile (size 376kb)

Download Beauport profile (size 359kb)

Download Bonne Nuit profile (size 503kb)

Download Bouley profile (size 468kb)

Download Green Island profile (size 505kb)

Download Greve De Lecq profile (size 469kb)

Download Grouville profile (size 686kb

Download Havre des Pas profile (size 601kb)

Download La Haule profile (size 489kb)

Download Le Braye profile (size 425kb)

Download Plemont profile (size 398kb)

Download Portelet profile (size 382kb)

Download St Brelade profile (size 445kb)

Download Rozel profile (size 433kb)

Download Victoria Pool profile (size 497kb)

Download Watersplash profile (size 459kb)

When did sea water quality monitoring begin?

Monitoring started in 1992. Since then the Department of the Environment has been instrumental in developing the protocols for measuring sea water quality which are now used in a European directive and by the World Health Organisation.

From the start of the 2012 bathing season the type of bacteria that were monitored changed. These changes are a requirement of the reviewed Bathing Water Directive, based on recommendations from the World Health Organisation.

In place of coliform and faecal streptococci standards, the revised directive sets standards for Escherichia coli and intestinal enterococci.

During the period 2012 to 2015 compliance will be reported against the standards in the 1976 directive, as in previous seasons.

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