Assessment of Water Losses Using ILI and ALI Performance Indicators: A Case Study from Urban and Rural DMAs in the Prishtina Regional Water Company
Session
Civil Engineering, Infrastructure and Environment
Description
Water loss management is a critical component of sustainable water utility operations, particularly in regions where both technical and commercial losses threaten service reliability and financial viability. This study investigates water losses through two key performance indicators: the Infrastructure Leakage Index (ILI), which measures real (physical) losses, and the Apparent Loss Index (ALI), which quantifies non-physical losses such as meter inaccuracies, data errors, and unauthorized consumption. The research was conducted within the Regional Water Company "Prishtina" in Kosovo, using a comparative analysis of two District Metered Areas (DMAs)—one urban zone located in Prishtina, and one rural zone in the municipality of Podujeva. Data collection involved field measurements, flow analysis, and consumption data over a representative period. The calculated ILI and ALI values highlight significant differences between the two zones, reflecting the impact of infrastructure age, population density, and operational practices on water loss performance.
Keywords:
Water Loss, Infrastructure Leakage Index (ILI), Apparent Loss Index (ALI), NonRevenue Water (NRW), District Metered Area (DMA), Water Balanc
Proceedings Editor
Edmond Hajrizi
ISBN
978-9951-982-41-2
Location
UBT Kampus, Lipjan
Start Date
25-10-2025 9:00 AM
End Date
26-10-2025 6:00 PM
DOI
10.33107/ubt-ic.2025.39
Recommended Citation
Abdullahu, Ilir, "Assessment of Water Losses Using ILI and ALI Performance Indicators: A Case Study from Urban and Rural DMAs in the Prishtina Regional Water Company" (2025). UBT International Conference. 1.
https://knowledgecenter.ubt-uni.net/conference/2025UBTIC/CEIE/1
Assessment of Water Losses Using ILI and ALI Performance Indicators: A Case Study from Urban and Rural DMAs in the Prishtina Regional Water Company
UBT Kampus, Lipjan
Water loss management is a critical component of sustainable water utility operations, particularly in regions where both technical and commercial losses threaten service reliability and financial viability. This study investigates water losses through two key performance indicators: the Infrastructure Leakage Index (ILI), which measures real (physical) losses, and the Apparent Loss Index (ALI), which quantifies non-physical losses such as meter inaccuracies, data errors, and unauthorized consumption. The research was conducted within the Regional Water Company "Prishtina" in Kosovo, using a comparative analysis of two District Metered Areas (DMAs)—one urban zone located in Prishtina, and one rural zone in the municipality of Podujeva. Data collection involved field measurements, flow analysis, and consumption data over a representative period. The calculated ILI and ALI values highlight significant differences between the two zones, reflecting the impact of infrastructure age, population density, and operational practices on water loss performance.