For the record, here are the results of the Ward Labs report for my tap water in case anyone has any particular input.
pH: 7.6
TDS: 400
Electrical Conductivity: 0.67
Cations / Anions: 7.3 / 7.1
Sodium, Na: 47
Potassium, K: 4
Calcium, Ca: 58
Magnesium, Mg: 27
Total Hardness, CaCO3: 258
Nitrate...