Non Revenue Water Research Papers (original) (raw)

Water Supply Company (PDAM) of Malang City has an attempt to improve water supply system. One of effort is by decreasing non-revenue water. The non-revenue water gives negative impact on the quality of water supply services. Current percentage of Non Revenue Water in the system of water supply in PDAM Malang is 19,7%. PDAM Malang has a target within the next 5 years percentage of Non-Revenue Water reduced to 16%. The aim of this research was to evaluate the decrease of water loss using step test method. The Case study located in Tlogomas 1E District Meter Area. The percentage of Non-Revenue Water in Tlogomas 1E District Meter Area on May 2016 is 51%. According on the results, there are a few things that cause Non-Revenue Water is high on that district, which is a lot of old rusty pipe that cause pipe leakage, bad service connections, and malfunction customer water meters. After done leak-detection using step test method, leaks were successfully located, verified and the pipeline leaks were repaired. Current percentage of non-revenue water in Tlogomas 1E District Meter Area is 44%. According to the result from step testing, the Non-Revenue Water in PDAM Malang can be reduced to 17% in one year.

- by
- •
- Water Supply, Drinking Water Treatment, PDAM, Non Revenue Water
- by NOR HIDAYAH
- •
- Non Revenue Water

An effective management of water supply systems becomes a need of an hour due to less availability of water resources in order to preserve and supply good quality water in sufficient quantities at adequate pressures to the consumers. However, a large fraction of the total input of water coming into a system goes unaccounted due to water losses and non-metered connections that leads to heavy loss of this precious commodity causing less revenue generation. Inadequate supply of water to consumers due to water losses through leakages, illegal service connections further increases the complexity of the water management practices. It is observed that the maximum leakage occurs in the distribution system and house service connections and is around 80% of the total leakages in the system while the remaining percentage covers the loss at source, transmission system, treatment plants and service reservoirs. Loss of water due to leakages and illegal connections contributes to Non-Revenue Water (NRW). In order to achieve the 24x7 water supply, water utility must know about the water coming into the system and losses occurred in the system. Generally, a step test is carried out to compute NRW of the water supply system. Therefore, the objective of this paper is to discuss how the step test is carried out for the computation of NRW in achieving 24x7 water supply. Under Twinning program of Maharashtra Jeevan Pradhikaran (MJP) and RanHill Pvt. Ltd. Kualalampur, this test was carried out for one city near Mumbai.

- by IJRASET Publication
- •
- Districts, Non Revenue Water, Water Auditing
- by Sam Kayaga
- •
- Strategic Planning, Developing Country, Corporate Performance, Performance Improvement

The efficient management of water resources is a growing necessity. Paradoxically, although people are aware of this need, non-revenue water is excessive in many cities in the world. Non-revenue water data indicate that there is much room for improvement in water resource management in cities and they also suggest a lack of motivation to solve the problem in the short-term.

- by Alfredo Pascual
- •
- Engineering, Civil Engineering, Economics, Developing Countries
- by Massoud Tabesh
- •
- Water Resources Management, Multidisciplinary, Case Study, Water balance

Water supply system becomes particular concern to every urban area in Indonesia including Tanjung and Murung Pudak Subdistrict as the Capital Regency of Tabalong, South Kalimantan Province. In water distribution system, water losses is one of serious problem to be overcome. The first step in reducing water losses is by developing an understanding of the big concept about water system including the preparation of a water balance. This process helps to understand the quantity, source and charge of water losses. The water balance calculation in this study uses the WB-Easy Calc program version 4.05. Based on the analysis, the percentage of water losses is 28.24% with the composition of real losses 23.86% and apparent losses of 4.38%. Distribution data components of water losses used in determining the effort leakage control in water supply company of Tabalong Regency. The effort is Establishment of Water Losses Team, commitment support, build a district meter area (DMA), routinely water balance with monitoring and evaluation of activities that have been done.

- by Ali Masduqi
- •
- Water Supply, Water Loss, Non Revenue Water, Tabalong

During the last decade, IWA Water Losses Task Force members have developed a systematic practical approach to the technical management of Non-revenue Water and its components, with (since 2002) increasing use of 95% confidence limits in these calculations. The current Water Losses Task Force (WLTF) has recently set itself an objective to develop a quick and practical method for calculating

- by M. Fantozzi
- •
- Water Loss, Confidence Limit, Non Revenue Water
- by Nor Hidayah
- •
- Non Revenue Water

One of the major challenges facing our water utilities is the high level of Non-Revenue Water (NRW) in the distribution networks. This paper assessed the performance of current management practices by Syarikat Air Melaka Berhad (SAMB) to deal with NRW. Information and NRW management data (from 2012 to 2013) were gathered and analysed. Statistical methods were used to evaluate the effects of pipe length and number of connections of the distribution network to the leakage level; and to determine the causes of leakage (water loss). In 2014, Melaka’s NRW percentage was 21.4% as compared to the national average of 35.6%, which is the second lowest rate among the states in Malaysia. Results of the study revealed significant positive relationships between average MNF (L/s) with number of connections and pipe length, with the prediction model of average MNF (L/s)=-4.42+1.088*10-2(NC)+1.07*10-4(PL), R2= 73.19%. The results also indicated that in a compact and urbanized city like Melaka, numb...

- by Munirah Hussein
- •
- NRW, Water Loss, Non Revenue Water

This paper introduces a procedure to calculate the non-revenue water in urban water systems. A software is developed to determine the components of apparent and real losses. Identification of these parameters is so important especially in countries with critical water resources situation. Evaluation of the apparent losses components has the same importance as leakage, in countries like Iran which all

- by Massoud Tabesh
- •
- Water Resource, Software Tool, Decision Maker, Performance Indicator
- by Nor Hidayah
- •
- Non Revenue Water
- by Sam Kayaga
- •
- Water Demand, Urban Water Management, Integrated resource planning, Demand Management
- by Stuart Stapely
- •
- Business, Non Revenue Water

The on-going debate on aid effectiveness highlights that in order for capacity development interventions to remain relevant and their results sustainable, their planning, implementation, monitoring and evaluation need to be flexible and case-specific. It is not only important to account for end results, but also to adjust interventions during their implementation. Capacity development partnerships (CDP) between water operators are portrayed as a promising approach for sustained performance. However, it has been observed that these interventions require significant time to lead to the targeted water operator performance gains. Hence, managing the partnership solely through the use of key performance indicators offers the partners little insight into both the progress achieved and the effectiveness of the partnership activities in contributing to such progress. This incomplete picture is likely to limit the ability of partners to manage the project efficiently. This paper proposes a m...

- by Guy Alaerts
- •
- Adaptation, Performance, Water Policy, Public Administration and Policy
- by Malik Ranasinghe
- •
- Business, Engineering, Civil Engineering, Economics

This paper presents the application of a financial model for optimal non-revenue water (NRW) to the Aqaba Water Company (AW), which serves approximately 130,000 residents of the Aqaba Governorate in Southern Jordan. It describes the water supply circumstances in Aqaba, summarizes previous NRW-reduction programs and their historical impacts, outlines the process of application for an NRW financial optimization model, and then presents the results, focusing on Aqaba City in particular. Currently, Aqaba Governorate's water is supplied from non-renewable groundwater drawn from the Disi Aquifer. With growing water demand, Aqaba will face a severe constraint – the limited capacity of wells and of the pipeline from Disi to Aqaba. As of 2010, the actual NRW was 361 L/customer/day, while the optimal amount was found to be about 89 L/customer/day. Sensitivity analysis shows that the reliability of the optimal NRW model result is plus or minus 10%. Depending on the effort expended, AW coul...

- by Alan Wyatt
- •
- Environmental Engineering, Chemical Engineering, Civil Engineering, Water

Résumé/Abstract Nowadays, continuous, healthy water supply and total water quality management have emerged as an important issue in engineering applications. In a wide ranging assessment, the quality of the drinking water is being... more

The rapid increase in global population coupled with escalating climate change has led to a serious water scarcity in the world. The problem is more pronounced in urban areas and UN Habitat estimates that the proportion of the world’s population living in urban areas had grown to at least 50% by early 2007. Therefore, instead of focusing on supply management, urban water managers need to also adopt demand management. Water loss management in the distribution network will not only reduce demand, but has other important benefits. This paper describes a project by Water Utility Partnership (WUP) of Africa whose objective was to reduce non-revenue water (NRW) in four water utilities in sub-Saharan Africa. The project’s approach was based on the premise that NRW is only a consequence of deep-seated utility management challenges. Hence, through capacitybuilding partnerships, key staff in the participating utilities were facilitated to develop performance improvement plans (PIPs), which in...

- by Sam Kayaga
- •
- Economics, Climate Change, Capacity Building, Urban Water Management
- by Vladimir Mijakovski
- •
- Water Supply, Flow measurement, Non Revenue Water

One of the major challenges facing our water utilities is the high level of Non-Revenue Water (NRW) in the distribution networks. This paper assessed the performance of current management practices by Syarikat Air Melaka Berhad (SAMB) to deal with NRW. Information and NRW management data (from 2012 to 2013) were gathered and analysed. Statistical methods were used to evaluate the effects of pipe length and number of connections of the distribution network to the leakage level; and to determine the causes of leakage (water loss). In 2014, Melaka's NRW percentage was 21.4% as compared to the national average of 35.6%, which is the second lowest rate among the states in Malaysia. Results of the study revealed significant positive relationships between average MNF (L/s) with number of connections and pipe length, with the prediction model of average MNF (L/s)=-4.42+1.088*10-2 (NC)+1.07*10-4 (PL), R 2 = 73.19%. The results also indicated that in a compact and urbanized city like Melaka, number of connections in the network appears to be most influential to the average MNF (water loss) (shown by a strong positive relationship, r = 0.847) as compared to the less compact zone (such as Perak) where pipe length appears to be more influential.

- by Munirah Hussein
- •
- NRW, Water Loss, Non Revenue Water
- by ZİNET SELMİN BURAK
- •
- Water Policy, Efficiency, Water Use, Arid Region