Water Loss Reduction

In many cities across the world, non-revenue water (water leakage, water theft and other losses) is frequently higher than 50 %, leading to water related financial losses. To counter the same, many municipal and government bodies are looking for solutions to improve water quality, reduce water losses (i.e. less non revenue water), improve service quality and install durable water sector infrastructure that is specifically designed to meet the growing demand, reduce maintenance expenses and create an economically sustainable water supply.

INWASOL has a concept for water loss reduction using German technology solutions, adapted to the situation of the water supply sector. For its concept, the best available and suitable equipment tools and technologies shall be adapted and improved for durable functioning under the physical and socio-economic working conditions in the project area.

A viable water utility business concept, equipped with a novel financing model for long-term value investment programmes shall be developed, verified and demonstrated. Know-how transfer to the local operators and decision-makers is included as an important project activity in order to ensure the sustainable implementation of the concept.

For such a concept, it is necessary to adapt existing technologies and to elaborate a business model for the reliable operation of a WLRP (Water Loss Reduction Programme), which must be profitable (i.e., sustainable in economic terms) and thus allow financing of all WLRP‐investments.

A comprehensive technical strategy is required for the reduction of real losses in consideration of the four common methods of water loss reduction: Dynamic Pressure Management, Active Leakage Control, Immediate Leakage Repair and Asset Management with a special component for pump efficiency – all in absence of continuous (24x7) water supply. This strategy includes a monitoring concept to control water losses and collect data for the assessment of reduction measures. Furthermore, it is necessary to simplify the monitoring of water losses by developing a web‐based visualization and analysis software with remote controlled data and noise loggers.


High Water Losses Enforce an Urgent Need for a Water Loss Reduction Programme

In many Indian cities, public water services only work a few hours a day and Non-Revenue Water (water leakage, water theft and other losses) is frequently higher than 50 %. Rapid urbanisation, the growth of population, economic development and the contamination of regional water resources have further led to a rapid increase of the supply deficit and severe problems for national health and welfare.

Apart from this, many safety measures need to be installed to avoid chlorine gas accidents. Appropriate training of personnel for the handling of hazardous substances is mandatory – and expensive. To prevent danger from poison gas or explosions (in the case of chlorine dioxide), hypochlorite or chlorine dioxide can be produced on site. However, health concerns of the use of chlorine substances remain due to it’s by products.

With water losses of 50 % or more, water loss reduction programmes under the WaLUE concept will be many times more profitable than project investments to increase the water production (like extension of water abstraction and purification plants, river dams, water recycling units, desalination etc.).

Tailor-made Implementation Concept for Water Loss Reduction in the Pilot Area

The overall target of the WaLUE project is to develop an integrated implementation concept for a water loss reduction programme (WLRP), tailor-made for the situation of water service utilities in India, with the City of Tiruvannamalai as a pilot area. The elaborated solution should be applicable to other developing and emerging countries. Therefore, existing methodologies and technologies have to be adapted. As a precondition for the profitability and financial viability of WLRP, a business model has to be created that ensures reliable and sustainable operation.

Pilot Area in the City of Tiruvannamala, Tamil Nadu

The project will be implemented in close cooperation and coordination with KfW, TNUDF and the City of Tiruvannamalai (150,000 inhabitants, located ca. 200 km from Chennai in the fast growing Indian Federal State of Tamil Nadu). It is strongly intended to transfer the WaLUE concept to other medium sized cities in India as well as in other developing and emerging countries.

Latest News


safe and healthy drinking water – a sustainable concept made in Germany powered by INWASOL / Grasshopper Investments

Annual Meeting of the ADB in Frankfurt

INWASOL and its German project partners from Indo German Alliance for Water Efficiency (IGAWE) hold a podium and plenary discussion at the “Annual Meeting of the […]

Project Development India

INWASOL and its German project partners meet Indian Utilities in Maharastra and Andra Pradesh.

Workshop in Mumbai Inwasol

Workshop in Mumbai on “German Solutions in Drinking Water for Indian Utilities” held by INWASOL and its German project partners together with EA Water Magazine