That spring sounds like great water, but chlorine isn't a problem unless you add beneficial microbes and the carbon filter in your RO will remove most the chlorine and chloramine anyway. Many people run a sterile res by using chlorine or H2O2.
"Most public tap water in Europe and North America is highly regulated, tested and certified for drinking. However, to make it safe, chlorine is added which may make it taste and smell bad. Activated Carbon filters are excellent at removing chlorine and related poor taste and odor. High quality activated carbon filters can remove 95% or more of the free chlorine."
Why are chemicals such as chlorine and chloramine added to tap water? How can you remove or reduce the chlorine in tap water? Chlorine and chloramine are used to kill bad microorganisms (pathogens) in tap water and keep it safe for drinking. But there are also problems and risks with chlorine...
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