Common AND dangerous. Active concern.
Rare but serious when present. Worth testing for.
Shows up often but generally harmless. Don't panic.
Rare and low-impact. Usually can ignore.
How commonly this contaminant is found in water supplies. Based on EPA sampling data and municipal water reports. Higher = more common.
Severity of health effects from chronic exposure. Based on EPA health advisories, WHO guidelines, and peer-reviewed toxicology research. Higher = more dangerous.
Minerals like calcium and magnesium show up in almost every water sample, but they're beneficial. Don't let "detected" scare you.
Mercury and vinyl chloride are rarely detected, but when present they're extremely harmful. Source matters more than statistics.
The same substance at different concentrations can be harmless, beneficial, or toxic. Always check the actual measured value against limits.
View how Hallstein Water performs against all these contaminants with actual lab-verified data.
View Hallstein COA