Terms of service

Last updated: March 2026

Use of data

Water profile data, mixing recipes, and tap water mineral data are provided for informational purposes. While we take care to ensure accuracy, water compositions are point-in-time measurements. Bottled water profiles can vary between batches. Tap water varies seasonally and by location within a supply zone. Estimated values (marked with ~) are derived from hardness or ion balance, not directly measured.

This site is a reference and recipe tool. It is not a source of health, medical, or safety advice. If you have concerns about your water quality, contact your water company or a qualified professional.

API usage

The public JSON API is available for non-commercial use. Rate limit: 100 requests per hour per IP. For commercial use, contact us.

Affiliate links

Some links on this site are affiliate links. We may earn a small commission at no extra cost to you. Affiliate relationships do not influence which waters appear in recipes — recipe generation is purely algorithmic.

Licensing

All water profile data is licensed under Creative Commons BY 4.0. Site code and design are not included in this licence.