Massachusetts Radon by County

Massachusetts’ Counties with the percent of homes from a 1988 survey of 1,650 homes having radon readings above the EPA’s Action Level of 4 picoCuries/l 

[Mass. Dept. of Public Health – 413 586-7525]

 Worcester – 38 %        Essex – 36 %        Middlesex – 26 %

Bristol – 23 %              Franklin – 23%     Hampshire – 23 %

Berkshire – 21 %         Norfolk – 21 %      Barnstable – 15 %

Plymouth – 12 %        Hampden – 11 %