Beyond the C Certificate: Hidden Dangers & Real Swimming Safety

Published on 8 October 2025 at 13:04


Beyond the C Certificate: Hidden Dangers and Real Swimming Safety

Your child has earned their C certificate! A fantastic accomplishment and a milestone to be proud of. But does this mean your child is now completely water-safe? Unfortunately, the answer isn't so straightforward. Many parents believe their child is 'done' with swimming after achieving the C certificate, but hidden risks still lurk. In this article, we delve deeper into swimming safety after the C certificate and provide practical tips to tackle the risks.

The Illusion of Safety After the C Certificate

The C certificate is seen in the Netherlands as the National Swimming Safety Standard . This means your child has mastered the basic skills to swim safely in a swimming pool with attractions and in open water without currents or large waves, such as recreational lakes and wider canals .

Yet, it's important to realise that the C certificate doesn't guarantee absolute water safety. Skills can quickly diminish if they aren't maintained . Additionally, every situation in the water is different, and unexpected circumstances can arise .

Factors that Influence Swimming Safety:

  • Decline in Swimming Proficiency: Without regular practice, swimming technique can deteriorate, and fitness can decline .
  • Changing Conditions: Open water is different from a swimming pool. Consider currents, temperature differences, waves, and underwater obstacles .
  • Overconfidence: A child with a C certificate might become overconfident and take risks they can't actually handle .
  • Distraction: Both children and parents can become distracted, leading to less effective supervision .

Hidden Risks After the C Certificate

Besides the general factors influencing swimming safety, there are specific risks you as a parent should be aware of:

1. Cold Water and Hypothermia

In open water, the water can cool down quickly, especially in spring and autumn. Hypothermia can lead to muscle cramps and fatigue, potentially causing your child to get into trouble .

2. Currents and Waves

Even in a recreational lake, currents or waves can occur, for example, due to wind or boat traffic. This can make swimming much harder, especially for children .

3. Underwater Obstacles

Open water often contains underwater obstacles like branches, stones, or plants. Your child could get entangled or injured by these.

4. Drowning due to 'Dry' or 'Silent' Drowning

Although rare, it's important to know that 'dry' or 'silent' drowning exists. This can occur after an incident in the water where a small amount of water enters the lungs. Symptoms can appear hours later and resemble pneumonia . Therefore, be alert to persistent coughing, shortness of breath, or extreme fatigue after swimming .

5. Forgetting Basic Skills

As with any skill, it's important to keep practising. Without regular swimming sessions, children can forget crucial basic skills, such as treading water or floating on their back . This can make the difference in emergency situations.

How to Tackle the Risks and Increase Swimming Safety?

Fortunately, there are plenty of measures you can take to increase your child's swimming safety, even after obtaining the C certificate:

1. Keep Swimming!

Regular swimming is crucial to maintain swimming proficiency. For example, go swimming with your child once a week or every two weeks . Let them practise different strokes and play games in the water.

2. Opt for Advanced Lessons

Various options exist to continue swimming lessons after the C certificate. Consider swimming proficiency lessons , snorkelling lessons, or survival swimming. This allows your child to learn new skills and further enhances their swimming safety.

3. Practise in Open Water

If your child has mainly swum in swimming pools, it's important to also practise in open water. This allows them to get used to the different conditions. Start in a safe, clear environment and gradually build up.

4. Stay Alert to the Environment

Inform your child about the potential dangers of open water, such as currents, obstacles, and temperature differences. Teach them how to react in different situations.

5. Supervise

Even if your child has a C certificate, it's important to always supervise, especially in open water. Make sure you can swim well yourself and know how to react in an emergency .

6. Repeat the Basic Rules

Regularly refresh the basic rules for swimming safety. Think about: not diving in shallow water, not running along the pool, and not pushing people into the water.

7. Be Prepared for Emergencies

Make sure you know what to do in case of an emergency. Learn CPR and know where the nearest first aid post is.

Swimming Safety Is a Continuous Process

Achieving the C certificate is an important step, but it's not an end point. Swimming safety is a continuous process that requires attention and practice. By staying alert and taking the right measures, you can ensure your child can enjoy the water safely and with pleasure.

Are you looking for a good swimming school near you? Use ZwemlesWijzer to easily compare swimming lesson providers based on location, price, method, and reviews. This way, you'll find the perfect swimming lessons for your child, even after the C certificate!

Want to know more about the different teaching methods? Then read on on our page about teaching methods. Or check out our knowledge base for parents for answers to all your questions about swimming lessons.


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Written by

Iris de Koning

Iris de Koning is the editor-in-chief and expert of the ZwemlesWijzer Knowledge Base. As a mother of two water lovers and with years of experience as a certified swimming instructor, she is the authority on swimming lessons in the Netherlands. Her mission: to provide parents with excellent advice, making the search for the perfect swimming provider easier and more enjoyable.