My tap water noticeably stunts the growth of my plants (and probably contributed to some plant deaths). It could be because my tap water is alkaline (and all soil around here is also alkaline), or contains fluoride and chlorine. Chlorine is toxic to plants and the bacteria and fungus in the soil that plants rely on. A lot of water treatment plants are switching to chloramines, which you cannot off-gas by leaving water sit out, and are probably worse for plants because they take longer to degrade.
My tap water noticeably stunts the growth of my plants (and probably contributed to some plant deaths). It could be because my tap water is alkaline (and all soil around here is also alkaline), or contains fluoride and chlorine. Chlorine is toxic to plants and the bacteria and fungus in the soil that plants rely on. A lot of water treatment plants are switching to chloramines, which you cannot off-gas by leaving water sit out, and are probably worse for plants because they take longer to degrade.