f3922471_ater_Standards_and_Definitions__AGENT
[ACCEPTABLE or SAFE LIMITS] Less than 4000 pCi/L [SOURCES] Natural deposits Radon is a gas [EFFECTS] May cause cancer Radon Gas causes lung cancer and is linked to stomach, liver and brain cancer Chemically damages your DNA In Maine about 25% of lung cancer deaths have been linked to homes with radon gas in the well water Up to 1/3 of all wells in Maine have radon gas of over 4000 pCi/L 10,000 pCi/L of radon gas in water = 1 pCi/L in air [AGENT] 
Radon
Haskell Water Treatment Drinking Water Standards and Definitions
AGENT