Water samples should be taken to an lab to determine contaminant amounts.
Following are the recommended safe upper levels of water contaminants:
UPPER SAFE LEVEL
CONTAMINANT
-
Arsenic – 0.2 parts per million (ppm)
Cadmium – 0.05 (ppm)
Calcium – 500.0 (ppm)
Chloride – 3,000.0 (ppm)
Chromium – 1.0 (ppm)
Copper – 1.0 (ppm)
Fluoride – 6.0 (ppm)
Hardness – 200.0 (ppm)
Iron – 0.3 (ppm)
Lead – 0.1 (ppm)
Magnesium – 125.0 (ppm)
Mercury – 0.01 (ppm)
Nitrate – 200.0 (ppm)
pH – 6.0 – 8.5 (ppm)
Potassium – 1,400.0 (ppm)
Selenium – 10.0 parts per billion (ppb)
Sodium – 2,500.0 (ppm)
Sulfate – 250.0 (ppm)
TDS(total digestible solids) – 6,500.0 (ppm)
Zinc – 15.0 (ppm)