Spa and pool chemicals

You can use a range of chemicals to keep your spa and pool water clean. We've got some tips for using them safely.

For more advice call The Poisons Centre on 0800 764 766 (0800 POISON).

If a person is not breathing or is unconscious, call 111 immediately.  

Learn about the chemicals you use in your spa or swimming pool

Have a look at the label on your spa or pool chemicals to learn about the risks, and how you can stay safe. It is common for these chemicals to be:

  • oxidisers or oxidizing agents. This means they can make things catch fire, or make a fire grow.
  • corrosive. This means it could hurt your skin if you touch it. It may also damage other things, like wood or metal surfaces.
  • toxic. This means it would make you sick if you eat or swallow it. It may also be bad to breathe it in, get it in your eyes, or on your skin.
  • ecotoxic or harmful to the environment.

Make sure you read all the instructions on the label so you know how to use and store your chemicals safely. You could also ask for a ‘safety data sheet’ at the store where you buy your chemicals. This will give you even more information about how to use the chemicals safely.

Using spa and pool chemicals safely

You should follow the direction on the label to make sure you use your spa chemicals safely. We also have some simple tips to help you stay safe:

  • Wear gloves, goggles and long clothing when using your chemicals.
  • Add your chemicals directly to your spa or pool (unless the directions say otherwise). It can be dangerous to mix your chemicals with small amounts of water, such as mixing them in a cup or bucket. They may explode.
  • Clean up any spills quickly, following the directions on the label.
  • Never mix different spa chemicals together. This can make them release poisonous gas, or even explode.
  • Wash your hands well when you are done.

Storing spa chemicals safely

Spa and pool chemicals can be dangerous. If they catch fire – even with just a spark – they could cause an explosion. Your chemicals can also make you sick if you eat them or inhale them, and hurt your skin if you touch them. You can take some simple steps to protect yourself and others in your home:  

  • Store your chemicals in a locked cupboard, where children and pets can’t get to them.  
  • Make sure they are kept well away from heat, fires and electricity.  
  • Keep them away from other chemicals that can burn easily, like petrol or LPG.  
  • Make sure you store all liquids upright, not on their sides. This will help stop big spills.  
  • Check you have shut all the containers tightly.  

If you have children, or children are likely to visit your home, you should take extra measures to protect them.