Every sewage pump factory operates a dedicated testing bay with water recirculation. In this bay, the sewage pump factory checks the pump's ability to pass spherical solids. The testing procedure at a sewage pump factory includes running the unit at shut‑off head.

A data acquisition system in the sewage pump factory records voltage, current, and power factor. If a pump fails any checkpoint, the sewage pump factory disassembles it for root cause analysis. The noise level of each unit is measured inside a soundproof room at the sewage pump factory.

For submersible models, the sewage pump factory performs a high‑pressure air test before oil filling. The quality control staff at the sewage pump factory verify that all nameplate data is correct. Some sewage pump factories also test the unit's ability to run dry for a short period.

After satisfactory results, the sewage pump factory issues a certificate of conformance. This documentation follows the pump to the end customer. By investing in thorough testing, a sewage pump factory reduces field failures and warranty claims. Ultimately, the reputation of a sewage pump factory rests on the reliability of every unit it ships.