Been advised on here to use distilled water but struggling to find it.
Would bottled Evian be ok to use in my water tool?
Reverse osmosis purified water works just as well as distilled at keeping things clean, in my experience. Cheaper than distilled typically. Look for grocery store water bottle fillup machines, Culligan, Arctic Mountain, Etc.
In my area, most of the grocery stores sell it for around $0.40 per gallon.