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)
