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RadNet
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Frequent Questions about RadNet

Can’t find the information you are looking for?
Learn more about RadNet or view related content:
  • Radiation Protection
  • RadTown - A Resource for Teachers and Students
  • Radon
  • UV Index

View frequently asked questions about the RadNet monitoring network by topic.

On this Page:
  • About RadNet
  • Near-Real-Time Air Monitoring
  • Air Filter Testing
  • Precipitation Testing
  • Drinking Water Testing

About RadNet

  • How does the EPA monitor the air for radiation?

  • What is RadNet?

  • Where are RadNet monitoring locations?

  • How did the EPA decide where to install fixed air monitors?

  • What units does EPA use to report laboratory analysis results (drinking water, air filter and precipitation)?

  • Where can I view RadNet monitoring data and sampling analysis/laboratory results?

  • Does EPA’s RadNet monitoring network track non-ionizing radiation from power lines, transmitters, or cell phone towers?

Near-Real-Time Air Monitoring

  • How often are RadNet’s near-real-time air monitoring data updated on the EPA website?

  • Why do I see higher levels of radiation at some monitor locations?

  • What do the different gamma channel ranges illustrate? What does each range represent?

  • What happens if air monitors report radiation levels outside of normal background levels?

  • What is a normal background exposure rate?

  • How does gamma gross count rate relate to exposure rate?

  • When will my RadNet station get exposure rate measurement capability?

  • What is gamma gross count rate?

  • Why are there fluctuations in near-real-time air data at a single monitoring location?

  • Why aren't the results for my location up to date? Why are there gaps in data?

  • Why did the EPA decide to add exposure rate measurement capability?

  • What is the relationship between exposure rate and dose rate?

Air Filter Testing

  • Where can I find results for beta monitoring in air?

  • Why does the EPA test air filters for radionuclides?

  • How does the EPA analyze air filters?

  • How does the EPA measure radiation if the air monitor in my area is not operating?

Precipitation Testing

  • Why does the EPA test precipitation for radionuclides?

  • How does the EPA sample precipitation for radionuclides?

  • How does precipitation affect radiation levels in the environment?

  • What federal, state, or local standards exist that address radiation in precipitation?

  • Where can I find the analytical results from precipitation samples?

Drinking Water Testing

  • What federal standards exist that address radiation in drinking water?

  • Where can I find the analytical results from drinking water samples?

  • How does the EPA sample drinking water for radionuclides?

  • Where can I find more information about radionuclides in drinking water?

  • Why does the EPA test drinking water for radionuclides?

  • RadNet Home
  • View RadNet Data by State
  • Learn About RadNet
  • RadNet Sampling and Analyses Schedules
  • RadNet Databases and Reports
  • History of RadNet
  • Frequent Questions
  • Glossary
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on June 24, 2022
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