Google rain ph. You'll immediatelly see in the responses you get, the problem with using rainwatwer or creekwater. (generally acidic)

"5 gallons of rainwater + 1 tsp lime + 1 multivitamin" (for a plant...?)
"Any water will do"...?
Although bottled water companies use tapwater, it is filtered. Major liabilities if not.

Image Reaper is right. Loads of bad info here, and it's so easily Googled. Seems to me the blind shouldn't be offering advise to the blind.

"Wellwater is far too strong"...? Perhaps diluting with bottled water would help? <kidding>