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A naturally occurring ion found in seawater and some groundwater.
While not harmful on its own, it can form toxic byproducts, like bromate, during water disinfection processes.
A naturally occurring mineral added to water to prevent tooth decay.
High levels can cause fluorosis (staining of teeth) and, in extreme cases, bone weakness and thyroid issues.
Measures of radioactivity in water, often from natural sources or nuclear activities.
Prolonged exposure to radioactive contaminants may increase the risk of cancer and damage internal organs, especially the bones.
Commonly found in water due to agricultural runoff, sewage, and industrial waste.
Can cause methemoglobinemia, or "blue baby syndrome," in infants and may increase the risk of cancer and thyroid problems with prolonged exposure.
A naturally occurring mineral found in water from soil leaching, rocks, and industrial processes.
High sulfate levels can cause gastrointestinal discomfort, including diarrhea, especially in infants and sensitive populations.
A radioactive element naturally present in soil and groundwater.
Can increase the risk of kidney damage and cancer, especially when ingested over time.
Arrowhead Mountain Spring Water comes from cold springs on Strawberry Creek in the San Bernardino National Forest
A naturally occurring mineral in water that contributes to hardness.
A naturally occurring ion found in salts, sometimes entering water from road salt, sewage, or industrial processes.
A mineral essential for bodily functions, found naturally in water.
A common metal in water, often from natural deposits or corroded pipes.