Just got some municipal water tested (I'll let you guess where it's from, it's not my local water) and the results are pretty funny (IMO):
pH 7.4
Total Dissolved Solids (TDS) Est, ppm 46
Electrical Conductivity, mmho/cm 0.08
Cations / Anions, me/L 0.6 / 0.5
Sodium, Na 9
Potassium, K < 1...