Environmental standards of nuclear waste disposal, are determined from the accident victim of exposure data, such as animal experiments and war and nuclear test. They are all in a short period of time of exposure, is the impact data on the human body. As exposure example of the long-term, there is an exposure of local residents such as natural radiation exposure and radiation dose especially large Radium Hot Springs. Low-level radiation of these day-to-day exposure shows that it is clear from the fact of more than 1000 years that there is a health-promoting effects, not harmful. Japan of Radium Hot Springs (Tamagawa hot spring) there is a history of 1200 years. Overseas there is a Karlovarsky kraj hot spring of Czechoslovakia that Madame Curie was built. This hot spring there is a history of about 500 years. In addition, hot spring with mixed low-level radium utility from ancient times of BC 100 years, there is a fact that was not the environment pollution. In other words, from the history of the human race, which has been living under the low-level radiation, for establishing more appropriate environmental standards of low-level radiation emitted from nuclear waste, we investigate the historic hot springs.