Testing results released by Utah Radon Services, a statewide radon mitigation company, show that about half of homes have a lower, but still concerning, exposure of two picocuries and above.

About one-third of homes have what the EPA classifies as elevated levels — four picocuries per liter, a measure of radioactive decay equivalent to 2.2 disintegrations per minute.

Consistent exposure over a lifetime to 4 picocuries per liter of radon would cause seven additional lung cancers per 1,000 non-smokers or 62 additional lung cancers in 1,000 smokers, according to ...

In an update on Monday, Xcel says one of its monitoring wells near the Mississippi River detected a tritium increase at 19,800 picocuries per liter, which is just below the EPA standard for ...

The federal limit for tritium in drinking water is 20,000 picocuries per liter, but none of the contaminated water has left the site or reached any drinking water source, including the Mississippi ...

A dangerous gas hiding in the soil is the leading cause of lung cancer among non-smokers. Schools aren’t required to test for it, but a local group and lawmaker are trying to change that.

The EPA says radon should be mitigated if air quality tests show four picocuries — a unit of radioactive decay — per liter, and people should start considering mitigation at two picocuries.

At an estimated 10 million picocuries per liter in a confined area, it was the second-highest concentration reported in any tritium leak and pollution incident nationwide.

Both state and federal agencies require that radium levels in drinking water be under 5 picocuries per liter. In September, however, testing in Perry Park showed radium levels of 12.9 picocuries ...

The NRC’s threshold for tritium in an ocean water sample that prompts reporting is 30,000 picocuries per liter, and San Onofre’s findings remain well below this level, Monford said.