Here are my 2 water reports from roughly 13 months apart. They do vary a little bit.
03/2010:
pH 7.7
Total Dissolved Solids (TDS) Est 447
Electrical Conductivity, mmho/cm 0.75
Cations / Anions, me/L / 7.6 / 8.3
ppm
Sodium, Na 13
Potassium, K 1
Calcium, Ca 78
Magnesium, Mg 46
Total Hardness, CaCO3 387
Nitrate, NO3-N 4.8 (SAFE)
Sulfate, SO4-S 6
Chloride, Cl 36
Carbonate, CO3 < 1
Bicarbonate, HCO3 358
Total Alkalinity, CaCO3 293
Fluoride, F 1.31
Total Iron, Fe < 0.01
04/2011:
pH 7.5
Total Dissolved Solids (TDS) Est 443
Electrical Conductivity, mmho/cm 0.74
Cations / Anions, me/L / 8.3 / 8.4
ppm
Sodium, Na 17
Potassium, K < 1
Calcium, Ca 81
Magnesium, Mg 44
Total Hardness, CaCO3 386
Nitrate, NO3-N 5.0 (SAFE
Sulfate, SO4-S 6
Chloride, Cl 42
Carbonate, CO3 < 1
Bicarbonate, HCO3 391
Total Alkalinity, CaCO 320