46 CFR § 160.026-4
Water
April 15, 2021
(a) Only water meeting the U.S. Public Health Service “Drinking Water Standards” which has been suitably inhibited to protect the container against corrosion shall be used. After treatment and packing the water shall be free from organic matter, sediment and odor. It shall have a pH between 7.0 and 9.0 as determined by means of a standard pH meter using glass electrodes.
(b) [Reserved]
[CGFR 65-9, 30 FR 11466, Sept. 8, 1965]