With recent articles from Surfers Against Sewage and The Guardian raising serious concerns about water pollution across the UK and Ireland, the safety of outdoor swimming has become a major talking point. In particular, rivers running through major cities, including the River Thames through Central London, have come under scrutiny for declining water quality, sewage discharge and increased health risks for swimmers.
For many people, wild swimming and outdoor swimming represent freedom, adventure and a connection to nature. However, as more swimmers become aware of the risks associated with polluted rivers and unmanaged swim sites, there is a growing shift towards managed open water venues, especially across Surrey, London and the South East.
At Longside Lake Watersports, we believe managed lakes provide the ideal balance between a natural open water environment and the safety, facilities and water quality that modern swimmers need.
Managed lakes also support a vibrant aquatic life and foster a thriving community around the water, offering a sense of vitality and ongoing activity that is often missing in urban or artificial water settings where life struggles to flourish.
The Growing Popularity of Outdoor & Wild Swimming
Outdoor swimming has grown rapidly in popularity in recent years.
From early morning dips to endurance training and year-round cold water immersion, more people than ever are choosing open water over a traditional pool. Walks along the Thames Path or a walk from the nearest station or car park to a favorite swimming spot are often part of the overall experience, making the journey as enjoyable as the swim itself. Viral social media posts of wild swimming spots and the appeal of a refreshing dip on a hot summer day, have all contributed to this trend, highlighting not just the health benefits but also the fun and social side of outdoor swimming with friends or family.
However, not all open water is created equal.
While rivers, city docks and remote swim locations may look inviting, many lack:
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Regular water quality testing
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Defined swimming areas
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Safe entry and exit points
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On-site safety teams or lifeguards
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Access to changing rooms, food or drinks
For swimmers based in busy urban areas like London or those travelling from Surrey to swim, these missing elements can quickly turn a peaceful swim into a risky one.
The Reality of Swimming in Rivers Like the Thames
The River Thames is one of the most well-known rivers in the UK and passes through some of London’s most popular outdoor spaces, including Richmond and areas close to bridges and walking routes. While the river attracts walkers, visitors and swimmers alike, it also presents significant challenges for safe water swimming.
Key Risks of River Swimming
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Water quality can change rapidly due to rainfall, sewage overflow and urban runoff
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Strong currents and tidal movement can pull swimmers off course
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Cold water shock is common, even in warmer months
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Busy river traffic increases collision risk
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Limited access and exit points along the shore
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No designated swim loops or courses
In unpredictable river conditions, it is crucial to keep your head above water and stay aware of your head's position to maintain orientation and ensure safety.
Even experienced swimmers wearing a tow float and wetsuit are exposed to unpredictable conditions, particularly during the winter season or after heavy rain.
Why Managed Lakes Are a Safer Alternative
Managed lakes are designed specifically to support safe open water swimming and water activities. Rather than reacting to changing conditions, these venues proactively manage safety, water quality and swimmer experience.
Below are the key reasons why managed lakes like Longside Lake Watersports are becoming the preferred choice for open water swimmers across Surrey and London.
Consistently Monitored Water Quality
One of the biggest advantages of swimming in a managed lake is clear water and consistent water quality monitoring.
Unlike rivers, which are affected by miles of upstream activity, managed lakes are:
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Regularly tested
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Closely monitored
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Actively maintained
This ensures swimmers can enjoy open water swimming without worrying about invisible pollutants or bacteria. Clean, balanced water reduces the risk of illness and allows swimmers to focus on enjoyment rather than uncertainty.
Professional Safety Teams & Lifeguards
Safety is at the heart of every well-run open water venue.
At managed lakes, swimmers benefit from:
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Trained lifeguards on duty
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Dedicated safety teams
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Clear safety protocols
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Controlled swimming zones
Whether it’s your first swim or you’re a regular swimmer completing structured distances, knowing professional support is nearby offers invaluable peace of mind.
In contrast, wild swimming spots and rivers often rely entirely on self-assessment, which can be dangerous, especially in cold, busy or changing conditions.
Defined Swim Loops & Courses
Managed open water venues provide structured swim routes designed for safety and progression.
At Longside Lake, swimmers can choose from:
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Short loops for beginners
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Half-mile routes
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Full mile courses
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Clearly marked swim areas
This allows swimmers to build confidence gradually, track progress and train effectively without worrying about boats, currents, or losing direction.
Reduced Risk of Cold Water Shock
Cold water shock is a serious and often underestimated risk of open water swimming, particularly during early swims, sudden dips, or the winter season.
Managed lakes help reduce this risk by offering:
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Gradual entry points
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Safety supervision
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Guidance on cold water exposure
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Wetsuit-friendly access
Swimmers can learn how to acclimatise safely rather than jumping into unknown conditions.
Facilities That Support Comfort & Recovery
One of the biggest differences between managed lakes and wild swimming spots is access to facilities.
Longside Lake Watersports offers:
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Clean changing rooms
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Clear entrance and exit points
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Nearby car park access
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Covered areas for poor weather
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Hot and cold drinks
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Food options for visitors
After a chilly swim, warming up with a hot drink or enjoying a cold drink after a summer swim makes the experience safer and more enjoyable.
A Calm Alternative to Busy City Swim Locations
Swimming in city rivers often means sharing space with walkers, cyclists, tourists and water traffic. Managed lakes provide a quieter, more controlled environment while still delivering the benefits of outdoor swimming in nature.
Surrounded by scenic views, lakes offer a sense of escape, allowing swimmers to forget the noise of the city and reconnect with water in a peaceful setting. Swimming in the middle of a calm, managed lake enhances this experience, providing a tranquil space away from distractions and making it ideal for open water swimming.
A Supportive Open Water Community
Managed lakes naturally attract a community of like-minded swimmers who value safety, wellbeing and respect for the environment. From social swimmers enjoying a refreshing dip to endurance athletes training for events, there’s a shared understanding of how to use the space responsibly.
This sense of belonging is difficult to replicate at unmanaged wild swimming locations.
Year-Round Swimming in All Seasons
Unlike many outdoor swimming spots that are only suitable during summer, managed open water venues operate year round.
With proper supervision, facilities and safety measures in place, swimmers can enjoy:
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Summer swims in warmer weather
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Autumn and winter cold water immersion
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Regular training regardless of season
Year-round access supports physical health, mental wellbeing and consistency — without unnecessary risk.
Environmental Considerations of Managed Lakes
Managed lakes dedicated to open water swimming are not just about providing a safe and enjoyable experience for swimmers, they also play a crucial role in supporting the local environment. This vigilance helps prevent the growth of harmful bacteria and algae, ensuring that both swimmers and the surrounding ecosystem remain healthy.
Environmental responsibility at these venues goes beyond just water testing. Managed lakes often implement natural methods to control algae and maintain balance, reducing the need for harsh chemicals that could disrupt the lake’s ecosystem. Careful monitoring also helps prevent the introduction of invasive species, which can threaten native plants and wildlife. By adopting these sustainable practices, open water swimming venues can offer a clean, clear lake for water swimming while preserving the natural beauty and biodiversity of the area.
For swimmers, this means enjoying open water in a venue that not only prioritizes their safety but also respects and protects the environment. Choosing a managed lake for your next swim supports both your wellbeing and the health of the local ecosystem.
Benefits of Managed Lakes for Regular Swimmers
For regular swimmers, managed lakes offer a host of advantages that make every visit enjoyable and stress-free. One of the standout features is the consistently clear water, which enhances both the safety and pleasure of open water swimming. Many venues provide a range of swim loops, including popular half a mile courses, so swimmers can select a distance that matches their goals, whether it’s a quick dip or a longer training session.
Facilities at managed lakes are designed with comfort and convenience in mind. Spacious changing rooms, ample car park access and on-site cafés serving hot and cold drinks mean you can focus on your swim and recovery, whatever the weather. After a refreshing dip in the summer season, there’s nothing better than relaxing with a cold drink by the water, while in the winter season, a hot drink helps you warm up after braving the chilly lake.
Safety is always a top priority, with a dedicated safety team and lifeguards on hand to support swimmers of all levels. This gives regular swimmers the confidence to push their limits, try new swim loops, or simply enjoy the open water environment with peace of mind. Managed lakes also foster a sense of community, bringing together wild swimming enthusiasts, outdoor swimming newcomers and seasoned open water athletes.
Whether you’re seeking a regular training spot, a place to connect with nature, or just a reliable venue for your next swim, managed lakes offer a welcoming environment, a wide range of facilities and the reassurance of professional oversight—making them the perfect choice for anyone passionate about water swimming.
Managed Lakes vs Wild Swimming: A Clear Comparison
While wild swimming in rivers and natural locations may feel adventurous, it often comes with compromises:
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Inconsistent water quality
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No lifeguards or safety teams
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Limited access and exits
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No facilities
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Increased risk in busy or cold conditions
Managed lakes remove these barriers, offering a safer, more reliable open water experience — especially for swimmers travelling from London or Surrey who want certainty when they arrive.
Why Choose Longside Lake Watersports?
As a dedicated open water venue, Longside Lake Watersports combines:
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Clear, monitored water
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Structured swim loops
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Professional safety oversight
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Excellent facilities
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A welcoming swimming community
Longside Lake Watersports provides essential equipment for swimmers, including wetsuits, tow floats and swim hats, with some items available for hire on-site to ensure safety and compliance with venue requirements.
Whether you’re visiting for your first open water swim, training regularly, or simply looking for a safe refreshing dip, Longside Lake provides an environment where swimmers can enjoy the water with confidence.
Final Thoughts
Open water swimming should be enjoyable, invigorating and safe. While rivers like the Thames and wild swimming spots may appear appealing, increasing pollution and unpredictable conditions mean they are no longer the safest choice for many swimmers.
Managed lakes offer a smarter alternative, delivering clear water, professional safety, proper facilities and a supportive environment for swimmers of all levels.
For those based in Surrey, London and the surrounding areas, choosing a managed open water venue like Longside Lake Watersports means enjoying outdoor swimming the way it should be: safe, social and truly refreshing. You can take a confident dive into the water, knowing that safety measures and expert supervision are in place for your peace of mind.