This app is designed for wastewater operators and engineers who need easy to use formulas for daily lab work or troubleshooting problems. There are over 75 formulas for calculating wastewater processes. The formulas are organized by process type. This app only uses English measurements. Answers can be emailed. You can view an online demo at

What’s New

Version 1.2.5

This app has been updated by Apple to display the Apple Watch app icon.

Updated the App to comply with iOS11.

Ratings and Reviews

4.0 out of 5
1 Rating

1 Rating

Suicycojd ,

Easy wastewater

Help sapped up wastewater math for reports!! Great app hope it expands more!!

Wastewater Engineer ,


Great App and very useful.

App Privacy

The developer, H3 Apps, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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