So I've completed my first batch of mead and it came out pretty good. I have a question on water. I happen to have occasional access to natural spring water, from the source. Is it OK to use this for brewing OR is it better to use properly filtered water, "clean" water? I was thinking this may make a better base, but I'm unfamiliar with the complexities or problems this may cause (minerals or other things in the water that I may be unaware of). TIA!