Applicability of the Poldaw uPVC Riser System as a Technology for enhancing Boreholes’ performance in Uganda
Technology Applicability Framework Assessment

Description:

The Technology Applicability Framework (TAF) was developed under a three year action research WaSHTec project by a consortium of organisations. It is a decision making tool used to assess the applicability, scalability and sustainability of a particular WaSH technology. TAF evaluates the potential of a given technology in a specific setting, helping us to understand if a given technology can provide the envisaged service sustainably, meeting the needs of the users. The tool also helps to capture the valuable learning with insights for technology scale up.
The Poldaw uPVC riser system was subjected to rigorous assessment using the TAF tool and this briefing note presents findings of the evaluation conducted.

The Poldaw riser system consists of pipes made of uPVC with pressure rating of 20 bars. The pipes are joined using threaded PVC collars and GI sockets. The system is designed for installations on boreholes of upto 60m deep. Its joints are fully dismantlable, facilitating maintenance. It also has a head pump that is customized with a galaxy chain mechanism and a 10.8mm diameter plain rod with lock nut, reducing overall weight during operation. Centralizers of 40mm external diameter are fitted on the rods only, ensuring alignment and stability within the rising main.

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Bibliographical Information:

ATC (2025) Applicability of the Poldaw uPVC Riser System as a Technology for enhancing Boreholes’ performance in Uganda. Technology Applicability Framework Assessment , Ministry of Water and Environment , Appropriate Technology Centre for Water, Sanitation and Environment , Mukono, Uganda

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