"Antimony is a metal found in natural deposits such as ores containing other elements. The most widely used antimony compound is antimony trioxide, used as a flame retardant. It is also found in batteries, pigments, and ceramics/glass. The major sources of antimony in drinking water are discharge from petroleum refineries; fire retardants; ceramics; electronics; and solder."
Discharge from the petroleum refinement process can be a source of environmental Antimony.
How can Antimony affect my health? (Source: US EPA)
"Some people who drink water containing antimony well in excess of the maximum contaminant level (MCL) for many years could experience increases in blood cholesterol and decreases in blood sugar."
Can Aquagear remove Antimony from my drinking water? (Source: Los Angeles County Agricultural Commissioner)
Yes, Aquagear water filters remove up to 97.50% of Antimony.