Seawater monitoring

​​​​​​​​​​​Latest results

Find the latest results of the seawater quality in the map and table below.

The results are a weekly snapshot of seawater quality.​

The full classification is calculated once a year for each bathing water site. This is based on all samples from the last 4 years.

If you notice pollution on the beach or in the sea, call +44 (0) 1534 709535.​

​Open seawater results map

​Bathing water classifications​

​Bathing classification	​Criteria
​	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 quality Indicates values are above 500 Escherichia coli per 100ml and above 200 Intestinal enterococci per 100ml​

Water safety for swimming

We provide the seawater data to Environmental and Consumer Protection every week.

They analyse the data and consult other stakeholders to make a decision on whether to advise against swimming in specific bays. If the results are poor, they would notify the media and signage would be displayed at the relevant bays.

Jersey has some of the cleanest water in Europe. Poor water quality can happen after periods of heavy rain. You should wait at least 24 hours before you swim after bad weather.

To contact Environmental and Consumer Protection call +44 (0)1534 445808 or email environmentalhealth@gov.je​.

Monitoring seawater

We monitor seawater from Monday 13 May to Tuesday 24 September as part of the EU Bathing Water Directive.

You can find the most recent results on the map and table above.

We monitor seawater quality to:

• ensure compliance with the EU Bathing water directive
  
• gain information on Jerseys sea​​​​water safety for swimming and recreational use
  
• identify episodes of pollution and ensuring compliance with Water Pollution (Jersey) Law 2000
  
• get valuable information for Jersey residents and tourists on the quality of Jerseys seawater
  
• provide information to the aquaculture industry, such as oyster or mussel farming
  

Different teams are involved in the monitoring process: 

• the Water and Air team and Environmental Protection team take the samples 
• the Official Analyst’ laboratory carry out the analysis
• Environmental and Consumer Protection advise on the safety of swimming in consultation with other stakeholders
  

​We classify our beaches following guidance from the European Directive and by the World Health Organisation.

Since 2015 bathing water classifications throughout Europe are based on sampling data collected over 4 years. Monitoring in Jersey started in 1992.

If you want historic data call +44 (0) 1534 441600 or email environment@gov.je.

Motoring schedule

​List of bays we monitor

We monitor 16 bays around Jersey:

• Archirondel
• Beauport
  
• Bonne Nuit
• Bouley Bay
• Green Island
• Greve de Lecq
• Grouville
• Havre des Pas
• La Haule
• Le Braye
• Plémont
• Portelet
• Rozel
• St Brelade's Bay
• Victoria Pool
• Watersplash​