Environmental Health

Radon

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Letter from the Commissioner
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Objective: 
Reduce human exposure to radon by increasing the percentage of homes tested for radon in the air.
  NH Baseline 1998 19%19
  US Baseline NA
  NH Target 2010 50%

Objective: 
Increase the percentage of public water systems that are in compliance with the new EPA MCL or Alternate Maximum Contamination Level (AMCL) for radon.
  NH Baseline 1999 6% systems in compliance with the new MCL of 300pCi/L18 70% systems in compliance with the new AMCL of 4000pCi/L18
  US Baseline NA
  NH Target 2010 100% systems in compliance  with either the new MCL or AMCL

Objective: 
Increase the percentage of private wells tested for radon.
  NH and US Baseline NA
  NH Target 2010 Developmental

Radon exposure increases the risk for lung and intestinal cancers. The two chief sources of radon gas in New Hampshire homes are:
• Radon gas originating from radon dissolved in a groundwater supply source. 
• Migration of radon from soil into basements through cracks or openings in the foundation. 
     A combination of air and water testing best identifies the total extent of radon exposure in homes. Nineteen percent of New Hampshire residents report having had their present home or a previous residence tested for radon in the air, but no system currently exists to track proportion of homes with private wells tested for radon in water.

 

 
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