Another report from Ward labs on Houston water chemistry. This is from the 77054 zip code...
pH 8.0
Total Dissolved Solids (TDS) Est, ppm 250
Electrical Conductivity, mmho/cm 0.42
Cations / Anions, me/L 4.1 / 4.1
ppm
_______________
Sodium, Na 31
Potassium, K 5
Calcium, Ca 43...