We live in London, and have a tendency to kill steam irons... Just bought a Morphy Richards Jet Steam iron and hope it can survive a bit longer.
The manual recommends distilled or demineralised water and I have seen online advice that steam iron water should be mixed 50% with tap water.
What is your choice of ironing water? Do you buy it online? Do you have a filter jug for it? Please advice, I don't want another innocent iron to die a wet, scaly death!