The amount of Phosphate in water is not regulated, but the WHO (World Health Organisation), has provided a maximum 'safe' level of around 5mg per litre, and the RDA (Recommended Daily Allowance) should not exceed 800mg.
0.05 PPM
5mg/l
It is the permissible limits for water quality laid down as standards by United States Public Health Drinking Water Standards.
Permissible Exposure Limits (PELs) are limits of occupational exposure to hazardous chemicals that have been established by the US Occupational Safety and Health Administration (OSHA).
Permissible Exposure Limit
Permissible exposure limits are levels of exposures permitted by OSHA, the US Occupational Safety and Health Administration.
10%
Permissible Exposure Limits (PELs) are maximum permitted exposure levels established by the US Occupational Safety and Health Administration (OSHA).
Each country has a standard specification for the drinking water; these specifications are generally similar. As an example in Romania is valid the standard STAS 1342-91.
OSHA
Who permissible limit for chromium in cauliflower
Permissible Exposure Limits (PELs) are maximum permitted exposure levels established by the US Occupational Safety and Health Administration (OSHA).
Mechanical tolerance is the permissible limits or limits of variation in physical dimension. This can also be defined as the limit between a bolt and a nut.
Permissible exposure limits are levels of exposures mandated by: