non-toxic pool chemical alternatives

Ditch the Harsh Chemicals – Better Ways to Keep Your Pool Clean

Nobody wants to swim in a chemical soup. But if you’ve got a backyard pool, chances are you’ve been using chlorine, algaecides, or other harsh stuff to keep the water clear. The problem? Those chemicals can be pretty nasty – for your skin, your lungs, and even the environment.

So, what else can you do? Good news: There are non-toxic alternatives that actually work. Here’s the deal.

Saltwater Pools – Less Harsh, Still Effective

First up, switching to a saltwater pool system. It’s not completely chlorine-free, but it’s way gentler than dumping traditional chlorine straight in.

Here’s how it works: A salt chlorinator turns salt into a mild form of chlorine that keeps your pool clean without the strong chemical smell or irritation. It feels softer on your skin, doesn’t sting your eyes as much, and requires less maintenance than traditional chlorine pools.

In New Zealand, you can find saltwater chlorination systems at places like Pool & Spa Warehouse NZ or Trade Depot. These stores stock everything from saltwater generators to pool salt, so you can easily make the switch.

Hydrogen Peroxide – The Natural Oxidiser

If you want a completely chlorine-free pool, hydrogen peroxide is an option. It works as a powerful oxidiser, breaking down bacteria and algae naturally.

The trick? You need a UV or Ozone system in the pool to activate it properly. Without that, hydrogen peroxide won’t work as well on its own. It’s also best for smaller pools rather than large, heavily used ones.

You can find pool-grade hydrogen peroxide at some specialist stores like WaterCo NZ or ask your local pool supplier if they stock it.

Ozone & UV Systems – High-Tech, Low-Chemical

Ozone and UV pool systems sound fancy, but they do the job with minimal chemicals.

Ozone systems: These inject ozone into the water, killing bacteria and algae naturally. You’ll still need a tiny bit of chlorine or another sanitiser, but much less than usual.
UV systems: These use ultraviolet light to zap bacteria, reducing the need for chemicals overall.

Both of these systems can be installed alongside your current setup, cutting down your chlorine use while still keeping the water clean. Check out Freedom Pools NZ or The Pool Warehouse for options.

Mineral Pools – Gentle on Skin, Tough on Bacteria

Mineral pools rely on natural minerals (like magnesium and potassium) to keep water clean. They’re amazing if you have sensitive skin or just want a more natural, spa-like feel in your backyard.

Instead of standard chemicals, these pools use a low-dose combination of minerals and sometimes a little salt to sanitise the water. The result? Less irritation, softer water, and fewer chemical smells.

Kiwis looking for mineral pool systems can check out retailers like Pool & Spa Direct or The Spa and Pool Warehouse for mineral-based treatment options.

Natural Pools – The Ultimate Chemical-Free Option

Okay, this is the hardcore eco-friendly option. Natural pools use plants, gravel, and biological filters instead of chemicals to keep the water clean. It’s kind of like turning your pool into a mini-lake – still swimmable, just without the chlorine.

You’ll need a dedicated shallow zone with aquatic plants to filter out bacteria and waste. It’s a bigger commitment, but if you’re after a 100% natural swimming experience, this is about as close as it gets.

For natural pool design ideas, check out New Zealand experts like Biotop Natural Pools or Natural Pools NZ.

A Few Extra Tips to Keep Your Pool Clean

No matter which system you choose, keeping your pool clean naturally is all about prevention:

Use a pool cover – This keeps out debris and reduces algae growth.
Keep your filters clean – A dirty filter means more contamination.
Maintain water circulation – Stagnant water invites bacteria.
Balance pH levels – Even natural pools need balanced water for safety.

Ready to Make the Switch?

If you’re tired of jumping into a pool that smells like a chemical factory, it might be time to swap out the harsh stuff for something better. Whether it’s saltwater, minerals, ozone, or even a full-on natural pool, there’s a way to make it work for your backyard.

Check out some of the local retailers mentioned above, have a chat with a pool expert, and start planning a cleaner, healthier way to swim.