Privacy at HydroSewer
Last updated: June 13, 2026
HydroSewer is a 100% offline application developed by Transparent Blue Water LLC. Everything runs on your device, and your data never leaves it.
1. Data we collect
None. HydroSewer does not collect, store, or transmit any personal or usage data. There is no analytics, no telemetry, no crash reporting, and no user account. The release build requests no internet permission.
2. Your project data
All networks, models, and results you create or import stay on your device, in local files (.inp, .hydrosewer) and the app’s local storage. They are never uploaded to us or to any third party. Sharing a file is always initiated by you, through your device’s own share and file features.
3. Network access
The release build requests no internet permission. The only outbound action is optional: tapping an external link (for example, “Open FlowAnalyzer on the web”) opens that address in your device’s web browser, outside HydroSewer. Once in the browser, that website’s own privacy policy applies.
4. Third-party software
HydroSewer uses the EPA SWMM 5 engine (public domain) and open-source libraries listed in the app under About > View licenses. These run locally on your device and do not transmit your data.
5. Children
HydroSewer is a professional engineering tool and is not directed to children.
6. Changes
We may update this policy; the “Last updated” date will reflect changes.