If I start with:
Ca = 86
Mg = 14
Na = 18
SO4 = 8
Cl = 22
HCO3 = 140
and add minerals to get to:
Ca = 116.6
Mg = 24.4
Na = 36
SO4 = 49.2
Cl = 22
HCO3 = 314
I changed my mind and I’m shooting for Dublin-like water.
Its not common knowledge but the water Guinness uses actually comes from the Wicklow mountains. I’m sure most people assume its city water and some even say from the Liffey (blek).
I’d want more chloride than sulfate, but otherwise it looks good.