Meltled snow for watering.

Here we go guys, was just a outside and was thinking of capturing some rain water, but it can be a hassle.
But what I was wondering was if we can use snow for our as it is also natural and pure crystalline water ice.
If that was melted and bought upto normal temperature can it be used for the plants.
Can someone with a ph meter find it suitable??
something else says this :
http://site.cleanairgardening.com/info/watering-plants-with-snow-melt.html

so any ideas or opinions??

I worked on Mt.Hood in Oregon for years and I was always told not to eat snow because its very dirty. Once it melts we have the perculating action to clean it before we use it. I would melt some and take it in for tests at a water lab. Most cities have one