What is a picocurie? A picocurie is a unit of measurement of radioactivity, equal to the amount of a radioactive isotope that decays at the rate of 3.7 × 10=101disintegrations per second. It was named after Marie Curie, a Polish born chemist who shared the Nobel Prize in 1903 with her husband Pierre Curie and Henri Becquerel for their collaborative research on radioactivity. In addition, Madame Curie won a second Nobel Prize in 1911 for her discovery and study of radium and polonium now found in the periodic table of chemical elements. 

Bristol County Pie Chart
Green Results under 2 pCi/L
Yellow  Results between 2 and 3.9 pCi/L
red  Results 4 pCi/L and above
Bristol County Map

Radon information source: Massachusetts Health and Human Services