Thanks Juan for your detailed response! Calcium and Magnesium should be tested, however, routine testing  add to cost.

Thanks Uday, I don't think routine monitoring for Ca or Mg would be required if the baseline test showed both at low concentrations. Unless the water source is regularly impacted from external sources. Most Labs measure Ca and Mg to calculated the Total Hardness anyway e.g. T.H. = [2.497 x calcium (mg/l)] + [4.118 x magnesium (mg/l)] from a local South African example, so if total hardness is below 300mg/L then Ca and Mg  are likely at safe concentrations.

Published July 28, 2020 13:56 by Juan Tedder

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