IWA WATER LOSS SPECIALIST GROUP . SINCE 2002
To research and advance knowledge in water loss reduction — for the benefit of utilities, practitioners and communities worldwide.
The WLSG works to reduce water losses globally and help cut future water demand, with meaningful engagement in Low and Middle-Income Countries.
2002
first international conference
800+
recent conference attendees
70+
countries represented
5,000+
newsletter subscribers
About
Who we are
The IWA Water Loss Specialist Group (WLSG) is one of the International Water Association’s most active specialist groups. Established in 2002 at the Water Loss Management conference in Cyprus, we bring together practitioners, researchers, and regulators to share knowledge and drive improvements in water loss management globally.
We are a fully volunteer-led network. Everyone who contributes does so out of genuine passion for sustainable water management. Membership is open to all IWA members.

Our mission — from the WLSG Constitution
We research and advance water loss reduction for the benefit of governance bodies, utilities, practitioners, companies, communities, and government agencies at all levels, and work to reduce water losses globally and future water demand through advocacy, capacity building, technology transfer, and impartial, standardised frameworks and benchmarks. We ensure meaningful representation of Low and Middle-Income Countries, and engagement with these regions in its governance, working plan, and activities.
What we do
Activities

Conferences
Read about our flagship international WaterLoss conference and regional events.

Get involved
Learn how to get involved in our activities including technical working groups and publications
Free knowledge for everybody
Every WLSG guidance note, position statement and white paper is free to download — because the practitioners who most need them should never meet a paywall.
Get in touch
Contact
WLSG is volunteer-led. We aim to respond within 5 working days.
General enquiries: iwawlsg@gmail.com
Conferences: WLSG Conferences Leader

