ARSENIC
It comes from the rock. Wells get tested for it.
Arsenic occurs naturally in some rock and soil and can seep into groundwater.
THE LIMIT
10 parts per billion.
EPA’s limit for arsenic in public water is 10 parts per billion (0.010 mg/L). Public systems have had to meet it since 2006.
WHO SHOULD TEST
Mostly wells.
- Private well owners, especially in areas with known arsenic
- Anyone whose water report shows arsenic near the limit
TREATMENT
What is used.
Reverse osmosis and certain specialized filters are used. Check that a product is certified for arsenic.
SOURCES
Where these facts come from.
QUESTIONS
Straight answers.
What is the arsenic limit in drinking water?
10 parts per billion.