The water quality and testing in Bristol Harbour.
Water quality has improved significantly over the last thirty years; however, sudden heavy rainfall still causes changes in the water quality from time to time.
Weekly and monthly bacteriological water samples are taken throughout the harbour to monitor the water quality and record trends.
Health risks associated with open water do exist, but can be reduced, provided users are aware of the possible hazards.
In times of poor water quality, resampling will take place and harbour users are advised to take extra care and precaution and see the health advice information available at the Harbour Office and below: