Acidic Water
Aluminum
Ammonia
Arsenic
Bacteria
Barium
Benzene
Bicarbonate
Borate (Boron)
Bromine (Bromide)
Cadmium
Calcium
Carbon Dioxide
Carbon Tetrachloride
Chloride
Chlorine
Chromium
Color
Copper
Cyanide
Cyptosporidium
Fluoride
Giardia Lamblia
Hardness
Hydrogen Sulfide
Iron
Lead
Legionella
Magnesium
Manganese
Mercury
Methane
Nickel
Nitrate
Nitrite
Odor
Organics
Pesticides
pH
Potassium
Radium
Radon
Selentum
Silica
Silver
SOC's
Sodium
Strontium
Sulfate
Taste
THM's
TOC
Total Dissolved Solids
Turbidity
Uranium
Viruses
VOCs
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Source
Hydrogen Sulfide (H2S) is a gas which imparts its “rotten egg” odor to water supplies. Such waters are distasteful for drinking purposes and processes in practically all industries. Most sulfur waters contain from 1 to 5 ppm of hydrogen sulfide. Hydrogen sulfide can interfere with readings obtained from water samples. It turns hardness and pH tests gray, and makes iron tests inaccurate. Chlorine bleach should be added to eliminate the H2S odor; then the hardness, pH and iron tests can be done. Hydrogen sulfide can not be tested in a lab, it must be done in the field. Hydrogen sulfide is corrosive to plumbing fixtures even at low concentrations. H2S fumes will blacken or darken painted surfaces, giving them a “smoked” appearance.
Treatment
H2S requires chlorine to be fed in sufficient quantities to eliminate it, while leaving a residual in the water (3 ppm of chlorine is required for each ppm of hydrogen sulfide). Activated carbon filtration may then be installed to remove the excess chlorine.
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