I had mine tested by Ward Labs last year. Redmond WA, Union Hill Water Association. No chlorine at all, so I don't even filter my brewing water. No fluoride either, so I have to give my kids fluoride every day, but that's a different story . . .
pH 7.9
Total Dissolved Solids (TDS) Est 97
Electrical Conductivity, mmho/cm 0.16
Cations / Anions, me/L 1.7 / 1.8
ppm
Sodium, Na 8
Potassium, K 1
Calcium, Ca 15
Magnesium, Mg 7
Total Hardness, CaCO3 67
Nitrate, NO3-N 0.3 (SAFE)
Sulfate, SO4-S 5
Chloride, Cl 3
Carbonate, CO3 < 1
Bicarbonate, HCO3 83
Total Alkalinity, CaCO3 68
"<" - Not Detected / Below Detection Limit