EPA analysis of radon in water is hard to swallow.
Stone
R
R
D000396:Air Pollutants, Radioactive / Q000032:analysis; D016902:Air Pollution, Indoor; D006801:Humans; D008452:Maximum Allowable Concentration; D011886:Radon / Q000009:adverse effects / Q000032:analysis; D012307:Risk Factors; D014481:United States; D014484:United States Environmental Protection Agency; D014875:Water Pollutants, Radioactive / Q000009:adverse effects / Q000032:analysis; D014881:Water Supply
D000396:Air Pollutants, Radioactive; D014875:Water Pollutants, Radioactive; D011886:Radon