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New Hampshire is in the highest radon-risk band in the United States — most of the state is mapped as EPA Zone 1 — and roughly one in three NH homes tests above the EPA action level for radon. For...

Roughly one in three New Hampshire homes has indoor radon at or above the EPA action level. That single fact is why radon testing is part of nearly every NH real estate transaction — and why a high radon result...

If your toilet bowl has an orange ring you cannot scrub away, your laundry is coming out faintly rust-stained, your shower walls have developed a brownish or blackish film, or your dishes are emerging from the dishwasher with dark spots...

New Hampshire has one of the highest rates of well-water arsenic in the United States. The U.S. Geological Survey and decades of research at Dartmouth's Toxic Metals Superfund Research Program have documented that something on the order of one in...

If you live in New Hampshire, the odds are roughly one in three that your home has elevated radon. That is more than double the national average, and it is a direct consequence of the granite bedrock that gave the...

Radon is a naturally occurring radioactive gas that seeps into homes from the ground. It is colorless, odorless, and tasteless, which makes it almost impossible to detect without specialized equipment. Although it may be invisible, its effects are anything but....

More than 40% of New Hampshire homes rely on private wells for their drinking water. While well water offers independence from municipal systems, it also brings unique challenges. Without government oversight, the responsibility for ensuring water quality falls entirely on...

If your home relies on a private well for water, you already know that with independence comes responsibility. Unlike municipal systems that are treated, tested, and regulated, well water is your responsibility alone. While well water often tastes better and...