Why take a chance with the well water when you're not sure of the actual contents and if there are any contaminant in your plumbing.
If you live in or near a large metropolitan area many healthfood or large chain stores like Whole Foods etc have filtering stations where you can get reverse osmosis filtered water for around 39 cent a gallon. Even if you had to buy spring water at whatever price it will still be cheaper than eating regular. Same goes for organic lemons and the grade B organic syrup it will all add up to cheaper than eating regular so why not use the best available. You don't want to be putting back in the very toxins you're trying to eliminate.