Tap water is different from mineral water in safe guarantee level. As tap water is checked strictly in more inspection items, it may be said that it is security more.
Mineral water is determined as production standard and ingredient standard in country by "standard standards such as food, additive" of the food hygiene law.
We set this production standard about natural water to use about Japanese mineral water, and, in Haramizu to use, it is said to standard of 18 items including tap water or the public bacteria or coliform bacterium that it must be adapted water.
In addition, ingredient standard stipulated about product, and standard of eight items containing lead or arsenic is set.
Safety of mineral water is secured by these standards.
Imported foreign mineral water secures safety in ingredient standard.
In addition, in foreign mineral water, there is thing that it is said, "the results that are made with severe water source maintenance and management for 100 years or more many years, and were sold secure safety".
It may be said that tap water is security more to be different from tap water by standard of water (51 items) not to produce influence in a person's health even if we continue drinking throughout the life in safe guarantee level in mineral water by production standard (18 items) and ingredient standard (eight items) of the food hygiene law.
In addition, "oh, true children The Water" which sell in City of Yokohama, Water Works Bureau of the food hygiene law, in addition to production standard and ingredient standard, inspect 59 items including standard of water of tap water originally.