Radioactive Contaminants

Detected
Parameter
Units Range
Detected
Highest
Level
Detected
Maximum
Contaminant
Level
(highest level allowed)
Maximum
Contaminant
Level Goal
(ideal goal)
Compliance Achieved
Yes/No
Source

Gross Alpha Activity pCi/L 0.4(+-2.2) - 1.1(+-2.9) 1.1 (+-2.9) 15 0 YES Erosion of natural deposits. 
Combined Radium pCi/L 0.1(+-0.8) - 0.4(+-0.7) 0.4 (+-0.7) 5 0 YES Erosion of natural deposits.
* The Massachusetts Department of Environmental protection has reduced the monitoring requirements for radioactive contaminants to less often than once per year because the source is not at risk of contamination. The last sample collected was in 2003, and was found to be free of this contaminant.