About TerraFirma
5 Danger Levels of Indoor Air Quality
The EPA breaks down potential indoor air quality issues into 5 danger levels. National Radon Defense IAQ professionals are trained in helping our customers improve their overall indoor air quality, as well as, reducing radon levels to their lowest possible level.
our service area
We serve the following areas
- Adams
- Adrian
- Arock
- Athena
- Baker City
- Bates
- Bridgeport
- Brogan
- Burns
- Cove
- Crane
- Drewsey
- Durkee
- Elgin
- Enterprise
- Haines
- Halfway
- Harper
- Helix
- Hereford
- Huntington
- Imbler
- Imnaha
- Ironside
- Jamieson
- Jordan Valley
- Joseph
- Juntura
- La Grande
- Lostine
- Meacham
- Milton Freewater
- North Powder
- Nyssa
- Ontario
- Oxbow
- Pendleton
- Pilot Rock
- Prairie City
- Princeton
- Richland
- Riverside
- Summerville
- Sumpter
- Union
- Unity
- Vale
- Wallowa
- Westfall
- Weston
