You CAN actually drink the tap water in most places and brush your teeth with this water. If the tap water is supplied by the local authorities it is safe. However bore water can be a problem and it is best not to drink that. Most of the stories told are by people who do not come here. Thirty years ago it was not a good idea to use the ice or drink tap water.
For minor workers, the annual occupational dose limits are 10 percent of the dose limits for adult workers. For protection of the embryo/fetus of a declared pregnant woman, the dose limit is 0.5 rem (5 mSv) during the entire pregnancy.or adults, an annual limit that does not exceed: 1  5 rems (0.05 Sv) for the total effective dose equivalent (TEDE), which is the sum of the deep dose equivalent (DDE) from external exposure to the whole body and the committed effective dose equivalent (CEDE) from intakes of radioactive material.
OSHA sets limits for the amount of chemicals workers can be exposed to during their work shift. OSHA has the power to enforce these limits. The Permissible Exposure Limit for ammonia set by OSHA is 50 parts per million (ppm) averaged over an eight hour work day. This is the standard that must be met in every work place. For example, this means you can be exposed to 100 ppm for 4 hours of your shift as long as you are not exposed to any ammonia for the other 4 hours of your work day.