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Water Quality Mobile App

Mayfly card in Water Quality App

About the Tool

The Water Quality mobile app is a water-monitoring data-collection and learning tool designed for use by educators and their students, citizen scientists, and researchers. The app helps users log and share data they collect in the field, interpret the data through learning pop-ups, and export it to create databases.

Available for Apple (iPhone, iPad, and iPod Touch) and Android (phones and tablets) mobile devices, this app includes data entry, identification, and learning features about chemical (e.g. dissolved oxygen, E. coli, pH, nitrate, turbidity), physical (e.g. water temperature, turbidity), and biological (a digital field guide to macroinvertebrates) water-quality parameters.

Mayfly card in Water Quality App

Note: Revenue from the sale of the app is used to make version updates, add new features, and for water education programs.

Special Features

  • Site profile information including a map of your location and ability to save pictures.
  • Chemical and physical water-quality parameters for assessing stream health.
  • Over 20 pictures, sketches, and descriptions of aquatic macroinvertebrates to aid in identification and calculation of pollution-tolerance indices.
  • Printable data report and export function to create water-quality databases.

Need Help?

Visit the Help page to find resources about the Water Quality app or to submit a bug report or feature request.

Water Quality Mobile App Privacy Policy


The Water Quality app was originally developed by educators, scientists, and programmers at Northern Kentucky University and the Foundation for Ohio River Education.