The Environmental Protection Agency say that the South East remains a "problem area" when it comes to radon gas levels.
Radon is a naturally occurring, radioactive gas emitted from rocks and soil, which has been linked to cases of lung cancer.
The EPA have recently called on the government to introduce measures to encourage homeowners and landlords to take action to protect themselves and their tenants.
Senior Scientist with the EPA, Stephanie Long, spoke to WLR News and said that there have been extreme levels of radon gas detected in Waterford in the past.
"We've seen some very high levels over the years," she said, "to give you an example, the highest home that we would have measured ever in Waterford was 9,700 units of radon. It should be below 200. If you were living in a house with 9,700 units in it, you'd be getting the same radiation dose as if you were getting 33 chest x-rays every day."
To see if you're in high concentration area, and to find out about testing and remedial action, an interactive map can be found by visiting radon.ie.
