Regardless of what type of home inspection you are looking for, McGurren Home Inspection LLC offers all home inspection services to fit your needs. Below you will find the services we offer. Select the category below to find more information on your home inspection.

*Please note that all radon and water testing is analyzed by state certified labratories and results will be sent directly to the client.

Reasons For Getting a Radon Test


Radon is a naturally occurring radioactive gas that is commonly found in bedrock and in water from bedrock (drilled) wells in New Hampshire. Radon gas is colorless, odorless, and tasteless. Radon gas finds its way into indoor air mainly by migrating from bedrock, through the soil, and into the home via cracks or other openings in the foundation. Radon from bedrock wells is released into indoor air during showering, dishwashing and doing laundry. Dug wells and point wells tend to have minimal to no radon. The amount of radon released from stone building materials such as a granite block foundations, fireplace materials, counter tops and floor or wall tiles is usually insignificant.


Exposure to radon poses an increased risk of developing certain types of cancer, primarily lung cancer and stomach cancer. Radon concentrations in both air and water are measured in picocuries per liter (pCi/L). A general rule of thumb is that for every 10,000 pCi/L of radon in a home’s water supply, the radon concentration in indoor air is increased by 1 pCi/L.


The increased risk of lung cancer is due to inhalation of radon-laden indoor air, including any radon entering the building through the water supply. (There is also an increased risk of stomach cancer due to ingesting radon in drinking water.) Any amount of radon in air or water increases one’s risk of lung cancer; the greater the amount, the larger the risk. Radon is the leading environmental cause of cancer deaths in the U.S. and the leading cause of lung cancer in non-smokers. Exposure to a combination of radon gas and cigarette smoke creates a greater risk for lung cancer than either factor alone. Long-term exposure to radon leads to the deaths of an estimated 100 New Hampshire residents each year.


The U.S. Environmental Protection Agency (USEPA) has indicated that the inhalation of radon in air poses a much greater risk than radon in your water. It is always recommended that homeowners test their airborne radon in the home, as this presents the greater risk. There are no federal or state standards for radon in drinking water. However, there are public health advisories for radon in drinking water, including that issued by USEPA. The New Hampshire Department of Environmental Services (NHDES) recommends the following: For private wells with radon concentrations at or above 10,000 pCi/L the treatment of water is recommended in conjunction with mitigation of indoor air radon. Homeowners should consult with radon mitigation and water treatment providers. For private wells with radon concentrations between 2,000 and 10,000 pCi/L, the treatment of water may be advisable if air concentrations in the home exceed 4 pCi/L. When radon in well water is below 4,000 pCi/L, you should retest air and water every three to five years.