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2026 Wetsuit Hire - Open Water Swimming Sessions
Update 6/9/2026
Lake Closure Extended for a further week
Please see below a further update regarding the temporary closure of Manvers Lake due to the presence of blue-green algae (cyanobacteria).
Over the past few days, we have been consulting with the Environment Agency and have now completed a comprehensive risk assessment to support our management of the issue and determine the safest course of action.
Following this we will be taking the following steps:
- Applying a natural blue dye to the lake, which will help suppress algae growth by reducing the amount of sunlight that penetrates through the water.
- Introducing barley straw bales into the lake. As the straw naturally breaks down, it produces compounds that can help limit algae growth over time.
- Undertaking weekly water testing at a number of locations around the lake to closely monitor water quality and the impact of the measures we are putting in place.
To allow these measures time to take effect and to continue monitoring conditions, we have made the decision to keep Manvers Lake closed for a further week.
We appreciate how disappointing this will be for members who are keen to get back on or in the water. However, the safety and wellbeing of our members is paramount, and we believe this is the most responsible approach while we monitor the impact of our actions.
Please Continue to Keep Dogs Out of the Water
The site and café will remain open; it is access to the water and water-based activities that are suspended.
Thank you once again for your patience, understanding and continued support. We are hopeful that the measures we are putting in place will have a positive impact and that we will be able to bring you more positive news next weekend.
Manvers Water Quality (30/8/26)
Following our earlier updates regarding blue-green algae at Manvers Lake, we wanted to let you know that we have now taken the decision to close the lake to all water-based activities for one week.
Over the last 24 hours, there has been visible evidence of a blue-green algae bloom. Although our regular monthly water-quality monitoring has continued to return its usual excellent results, the visible presence of the algae means we believe a temporary closure is the appropriate course of action.
The closure will apply to all water-based activities, including swimming, paddlesports, dragon boating, sailing, windsurfing, model boating and fishing.
We are also asking all dog walkers to keep dogs out of the lake and away from any visible algae or scum around the water’s edge. Dogs should be kept under close control when walking around the lake and should not be allowed to drink from the lake.
We appreciate that closing the lake will be disappointing and will affect many of our members. However, given the changing situation, we feel that a seven-day closure gives us an appropriate period to monitor the lake, assess conditions and determine the safest way forward.
We will continue to inspect and monitor the lake throughout the week and will provide members with a further update before any decision is made to reopen the water.
The site and café will remain open; it is access to the water and water-based activities that are suspended.
Thank you, as always, for your patience, understanding and support while we manage this situation.
Wetsuit Hire Only - Open Water Swimming
If you wish to hire a swim wetsuit for use at the Wednesday evening or Saturday morning swim sessions please pre-purchase, as numbers are limited.
We hold adult sizes from Small to XXXL, and children's sizes for 9-10years & 11-12years.
Please bring your own swimwear to have on under the wetsuit.