Strategic Trenchless Rehabilitation Technologies for Water Loss Reduction
Organised by the International Society for Trenchless Technology (ISTT) and the IWA Water Loss Specialist Group, this webinar brings together leading industry practitioners to present proven solutions applied in real-world conditions. Through practical case studies and lessons learned, participants will gain insights into how utilities can advance resilient, sustainable, and cost-effective infrastructure renewal while reducing water losses and improving network performance
International Society for Trenchless Technology
IWA Specialist group - Water Loss
Starts
Jul 21, 2026
Language
EnglishDuration:90 minutes
Format
OnlineMember fee(LMIC): 00.00
Member fee: 00.00
Standard fee: 00.00
Webinar Video
Webinar Presentation
Description
Water utilities worldwide face growing challenges from ageing pipe networks, increasing water scarcity, and financial pressures. More than 30% of treated drinking water is lost before reaching consumers, wasting valuable resources and revenue. Conventional pipe replacement in dense urban areas is often costly, disruptive, and difficult to implement.
Trenchless rehabilitation technologies offer a reliable and efficient alternative. They enable pipeline renewal with minimal surface disruption while restoring structural integrity and significantly reducing water loss.
Organised by the International Society for Trenchless Technology (ISTT) and the IWA Water Loss Specialist Group, this webinar brings together leading industry practitioners to present proven solutions applied in real-world conditions. Through practical case studies and lessons learned, participants will gain insights into how utilities can advance resilient, sustainable, and cost-effective infrastructure renewal while reducing water losses and improving network performance
Target Audience
Water utility managers and staff, Strategic Asset managers, Engineers, Infrastructure planners, Consultants, Researchers, and decision-makers involved in water distribution systems and leakage reduction.
Learning Objectives
Following this session, participants will be able to:
- Understand how trenchless technologies contribute to water loss reduction
- Identify suitable trenchless methods for different pipe conditions and contexts
- Evaluate benefits and limitations compared to conventional excavation
- Recognise how trenchless solutions fit into strategic asset management plans
- Analyse real-world case studies and implementation experiences
Learning Format
Webinar Outcomes
- Trenchless technologies provide effective, low-disruption solutions for reducing water loss in ageing networks.
- Strategic asset management is essential to maximise the benefits of rehabilitation investments.
- Real-world case studies demonstrate that trenchless approaches can deliver cost-effective, sustainable outcomes for utilities worldwide.
Speakers/Panelist Details
- Gary Wyeth, IWA Water Loss Specialist Group / Chairman / Malaysia (https://www.linkedin.com/in/gary-wyeth-09242112/)
- Ari Gashi, RÄDLINGER PRIMUS LINE GMBH / Regional Sales Representative / Germany (https://www.linkedin.com/in/ari-gashi-636662276/)
- Ivo Raphael Hemsing, SAERTEX / Head of Business Development Pressure / Germany (https://www.linkedin.com/in/ivo-hemsing-8b3764190/)
- Prof Mark Knight, SIPP Americas/Chief Technology Officer / Canada (https://www.linkedin.com/in/mark-knightuw/)
Related IWA Specialist Groups
Water Loss
The Water Loss Specialist Group is strongly focused on all treated water that is lost, which is mostly from underground leaks on water-mains and water service pipes, and also how to reduce those losses through leak detection and hydraulic control. However those losses include any water that has entered the networks following treatment, and fails to get through to consumers/customers. Identifying how much water is being lost is the recommended starting place for utilities and practioners. The group has developed a method of accounting for all water entering a water supply system, and this process has been accepted world –wide by everyone associated with managing water networks. The terminology then changed from “Unaccounted For Water”’ to “Non Revenue Water”, on the basis that all water can now be accounted for, albeit that the IWA process for accounting for water will highlight the strengths and weaknesses of data they have for measurement. This “top down” approach provides a strategic direction for utility managers to determine their best approach to reducing losses. The group has also identified four important actions that can be taken to reduce water losses, and subsequently this has been graphically shown as a strategic plan to reduce the overall volume of lost water.
A key message to the industry that is an outcome from this work, is that percentages are a poor method of measuring losses when used to measure progress, or as comparisons to other similar utilities. An emphasis has been placed on having accurate data regarding flow measurement into water distribution networks, and water pressure variance. These are key factors to be known in order to identify where most leakage is, and to understand where leaks can be found and how leaks can be stopped from