Heavy Metals in Water

Dissolved Heavy Metals in Water

Mercury, silver, cadmium, chromium, copper, lead, nickel and zinc are heavy metals present in fresh waters.

They are toxic to man and aquatic organisms in varying degrees and concentrations. They can be serious pollutants because these stable compounds can have persistent toxic effects for many years following their deposit.

The heavy metal compounds of chromium, cadmium, mercury and lead have minute biological function in animal life but can act synergistically with other substances to increase toxicity.

Some toxic effects are cumulative and are harmful to the degree that the dosage and resultant concentrations approach lethal thresholds.

Each of the heavy metals is discussed briefly.
Mercury in Water
Silver in Water
Cadmium in Water
Chromium in Water
Copper in Water
Lead in Water
Nickel in Water
Zinc in Water

Next Topics…
Non-Metals in Water

Chemical Water Quality Parameters
Pesticides in Water
Oil in Water

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Physical Water Quality
Chemical Water Quality
Biological Water Quality
Water Basics 101

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