# License

**Water Quality Explorer** © 2026 Natchaya Luangphairin

This tool (its code, design, documentation and processed data files) is licensed under the
**Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)**.

Full legal text: <https://creativecommons.org/licenses/by-nc/4.0/legalcode>

## In plain language

You are free to:

- **Share**: copy and redistribute the material in any medium or format
- **Adapt**: remix, transform and build upon it, for example for teaching or research

as long as you follow these terms:

- **Attribution**: give appropriate credit (see the citation below), link to the license, and
  indicate if you made changes. Do not suggest that the author endorses you or your use.
- **NonCommercial**: do not use the material for commercial purposes.

For commercial use, contact the author for permission.

This summary is not a substitute for the license; the legal text above governs.

## Data

The underlying EPA datasets (SDWIS, ECHO, Envirofacts, Six Year Review and UCMR data) are
public information from the U.S. Environmental Protection Agency. This tool is independently
developed and is not affiliated with or endorsed by the EPA.

## How to cite

> Luangphairin, N., & Alfredo, K. (2026). *Water Quality Explorer* [Web application].
> https://natchayal.github.io/water-quality-explorer/