If you're wondering what water to use in a steam iron, you're not alone. Searches for “best water for steam irons” and “distilled water for irons UK” are increasing — and for good reason.
Using the wrong water can cause limescale, block steam vents, stain clothes, and shorten the lifespan of your iron.
At The Somerset Clear Water Company, we supply high-purity distilled and deionised water with free UK delivery and next working day dispatch.
Why the Water You Use in a Steam Iron Matters
Most tap water in the UK contains minerals like calcium and magnesium. When heated, these minerals form limescale deposits inside your iron.
- Clog steam vents
- Reduce steam output
- Leave marks on clothing
- Shorten the lifespan of your appliance
This is why many manufacturers recommend using distilled or deionised water instead.
If you're comparing water types, you may also want to read our distilled vs deionised water guide.
Is Distilled Water Best for Steam Irons?
Yes — distilled water is the safest and most widely recommended option.
Distilled water is produced through boiling and condensation, removing:
- Minerals (no limescale)
- Metals
- Organic impurities
This makes it ideal for steam irons, humidifiers, and other appliances where mineral-free water is essential.
Available in:
- 5L bottles
- 2x5L, 3x5L and 4x5L multi-packs
- 25L bulk containers
🛒 Shop Distilled Water — free UK delivery
Can You Use Deionised Water in a Steam Iron?
Deionised water removes mineral ions, making it suitable for some irons — but not all.
Unlike distilled water, it may still contain trace organic compounds.
Always check your iron manufacturer’s guidelines before using deionised water.
Deionised water is often used in automotive, electronics and industrial applications, and may be suitable for certain ironing uses if your appliance manual allows it.
Explore deionised water options →
Distilled vs Deionised Water for Steam Irons
| Feature | Distilled Water | Deionised Water |
|---|---|---|
| Removes minerals | ✅ Yes | ✅ Yes |
| Removes organic matter | ✅ Yes | ⚠️ Not always |
| Safe for steam irons | ✅ Recommended | ⚠️ Check your iron's manual |
| Multi-pack savings | ✅ Yes | ✅ Yes |
Our recommendation: Distilled water is the safest and most widely compatible choice for steam irons. It is clean, mineral-free, and suitable for most manufacturers’ guidance.
Looking to buy now? View our distilled water collection here.
Why Buy From The Somerset Clear Water Company?
- 🚚 Free UK shipping on all orders
- ⏱️ Next working day dispatch
- 📦 Multi-pack and bulk options
- 🏭 High-purity UK-manufactured water
Whether you iron daily or weekly, our 5L distilled water is the most convenient size — with discounted multi-pack options for bigger households and businesses.
👉 Shop distilled water for steam irons
FAQs About Water for Steam Irons
Can I use tap water in a steam iron?
No — tap water contains minerals that cause limescale build-up, block steam vents, and can stain clothing.
Is distilled water better than deionised water for ironing?
Yes. Distilled water removes both minerals and organic impurities, making it the safest and most reliable option for steam irons.
What happens if I use tap water in my iron?
Over time, mineral deposits can build up inside your iron, reducing performance and potentially shortening the lifespan of the appliance.
What size distilled water should I buy?
5L bottles are the most popular for home use, while multi-packs and 25L containers are ideal for frequent use or small businesses.
Can distilled water damage an iron?
No — distilled water is safe and often recommended because it prevents scale and residue build-up inside the appliance.
Buy Distilled Water for Steam Irons Today
At The Somerset Clear Water Company, we manufacture high-purity distilled water in the UK for home and commercial use.
- ✔ Lab-tested purity
- ✔ Free UK delivery
- ✔ Next working day dispatch
- ✔ Available in 5L, multi-packs and 25L
Or browse deionised water options →
