Take the Plunge: Getting Started with Open Water Swimming
There’s something genuinely magical about slipping into a sun-dappled lake, a rushing river or a wave-kissed stretch of coastline. Open water swimming has exploded in popularity across the UK in recent years, and it’s easy to understand why — it combines physical exercise with an almost meditative connection to the natural world. But wild swimming comes with real considerations that a heated indoor pool simply doesn’t. Get things right from the start and you’ll be hooked for life. Rush in unprepared and it can be a miserable — or even dangerous — experience.
Whether you’re eyeing up your local reservoir or dreaming of a Highland loch, here’s everything you need to know to begin safely.
Know Before You Go: Research Your Location
Not all open water is created equal. Before you choose your spot, do your homework.
- Check access and permissions: Many lakes and rivers in the UK are privately owned. Use resources like the Outdoor Swimming Society’s wild swimming map to find legally accessible spots.
- Understand the hazards: Look out for boat traffic, strong currents, underwater obstructions, weeds and sudden depth changes.
- Check water quality: This is genuinely important. Agricultural run-off, sewage overflows and blue-green algae can all make open water unsafe. Use a water quality test kit to check for harmful bacteria and pollutants before you swim — especially at unfamiliar spots or after heavy rainfall.
At wildswimmingtests.co.uk, we offer easy-to-use test kits designed specifically for wild swimmers, so you can get reliable results without needing a laboratory.
Essential Kit for Open Water Swimming
You don’t need a vast amount of gear, but a few key items make a significant difference to both safety and enjoyment.
What to Wear
- Wetsuit: British waters are cold — often shockingly so. A good-quality triathlon or open water wetsuit will keep you warmer for longer and improve buoyancy.
- Neoprene gloves, socks and a swim cap: Heat is lost rapidly through your extremities and head. A brightly coloured silicone or neoprene cap also makes you more visible to other water users.
Safety Essentials
- Tow float: A brightly coloured inflatable float that attaches around your waist. It makes you visible and gives you something to rest on if needed.
- Waterproof phone case or GPS tracker: Useful in remote locations. Always tell someone where you’re going and when you expect to be back.
Understanding Cold Water Shock
Cold water shock is one of the biggest risks for new open water swimmers and it’s not something to underestimate. When you enter cold water quickly, your body’s involuntary gasp reflex can cause you to inhale water. Your heart rate spikes and panic can set in fast.
The solution is simple: enter the water slowly. Wade in gradually, splash water on your face and neck, and give your body a minute to adjust before you begin swimming. Never jump or dive into open water you don’t know well — and certainly not when you’re new to wild swimming.
Swim with Others and Build Up Gradually
Never swim alone, particularly as a beginner. Join a local wild swimming group — they’re wonderfully welcoming communities and an experienced swimmer nearby is the best safety net you can have.
Start with short swims close to shore and build your distance and confidence progressively. Ten minutes in cold water is a solid beginning. Trying to push through discomfort when you’re new is a recipe for trouble.
Make Water Quality Testing Part of Your Routine
Even experienced wild swimmers can be caught out by invisible hazards in the water. Bacteria like E. coli and campylobacter, as well as toxins from blue-green algae, pose real health risks. Regular testing — particularly at spots you visit frequently or after periods of heavy rain — should become as routine as checking the weather forecast.
Ready to Swim?
Open water swimming is one of the most rewarding things you can do outdoors in the UK. With the right preparation, the right kit and a healthy respect for the environment, it’s an incredibly safe and joyful pursuit. Start slow, swim smart, test your water, and you’ll soon wonder how you ever lived without it.
📷 Photo by Johanna Steppan on Unsplash
