@dr. high, answer is no
some tap water can be good because it holds a decient amount of secondary nutrient, but some can be harmful like having alot of chlorine.
If your tip is still burning that means that chlorine is still present and you probably have to evaporate more. Or it can be other factors depending on how hard your water is.
I have a tap water of 200-220ppm i don't get alot of problem from it or any at all because even if i use the water out of the facet after a day in my hydro res. the chlorine will evaporate. And i still have burning tips but it doesn't cause me that big of a problem where the plant will die, so i'll stick with tap instead of investing in a RO system and having to get cal mag.