Research
A small library for the curious.
A few original sources that helped me read more carefully.
U.S. public health authority
FDA: Bottled Water Everywhere: Keeping It Safe
A plain-language overview of how bottled water is defined, regulated, sourced, and treated in the United States.
Open source ↗Manufacturer documentation
Enagic K8 Product Manual
The manufacturer’s operating guide for the K8, including installation, water settings, safety directions, and maintenance information.
Open source ↗Manufacturer-hosted regulatory document
Enagic Japanese medical-device authorization document
Company documentation regarding Enagic’s Japanese medical-device marketing authorization. This does not establish U.S. disease-treatment approval for the K8.
Open source ↗Peer-reviewed research
Hydrogen Water: Extra Healthy or a Hoax?—A Systematic Review
A 2024 review of human research that describes a mixed and still-developing evidence base, with a need for larger, stronger trials.
Open source ↗U.S. environmental authority
U.S. EPA: WaterSense and water efficiency resources
A starting place for public information about household water use and local-water context—not a substitute for your local utility’s own report.
Open source ↗One important context note
Molecular-hydrogen research is still mixed and developing. Japanese company documentation is not a basis for U.S. medical claims.