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Water Losses Analysis in Selected Group Water Supply Systems Cover

Water Losses Analysis in Selected Group Water Supply Systems

Architecture, Civil Engineering, Environment
Volume 11 (2018): Issue 1 (March 2018)
By: ,   and    
Open Access
|Apr 2019
Figures & tables

Figures & Tables

Table 1.

Water supply systems A and B characteristics

Network
ParameterUnitA [15]B
Number of individual consumersppl. 8 350 5 502
Total length of water supply network (Lm )km 143.6 94.23
Number of households connectionspcs. 2 120 1 651
Total length of households connectionskm 79.0 77.54
Total length of water network with households connectionkm 222.6 171.77
Water Network Intensity Indicator (WNII)m3/(day·km) 8.05 7.50
Average operating pressureMPa 0.4 0.38
Average water production in 2010–2015m3/year 454 333 245 266
Average annual water consumption for own purposesm3/year 3 850 3 125.8
Average water sale in 2010–2015m3/year 269 133 198 563
Water sale in 2015m3/year 260 300 231 467
Table 2.

Water balance and terminology according to IWA (data in m3/year) [1]

System Input Volume (SIV)
Authorised Consumption (AC)Water Losses (WL)
Billed Authorised Consumption (BAC)Unbilled Authorised Consumption (UAC)Apparent Losses (AL)Real Losses (RL)
Revenue Water (RW)Non-Revenue Water (NRW)
Table 3.

Selected components of the water balance for the system A over the period 2010–2015

Year
Parameter as per tab. 2201020112012201320142015
SIV, m3/year463 030.0448 842.0464 526.0459 583.0444 824.0422 092.0
WL, m3/year187 230.0169 642.0183 226.0173 983.0162 224.0153 392.0
RL, m3/year164 078.5147 199.9159 999.7151 003.8139 982.8132 287.4
NRW, m3/year197 230.0179 642.0193 226.0183 983.0172 224.0163 392.0
Table 4.

Selected components of the water balance for the system B over the period 2010–2015

Year
Parameter as per tab. 2201020112012201320142015
SIV, m3/year251 156.0245 486.0259 532.0232 733.0237 061.0258 000.0
WL, m3/year67 296.050 745.053 807.033 153.027 804.024 533.0
RL, m3/year57 249.840 925.647 318.727 334.721 877.518 083.0
NRW, m3/year77 046.060 495.063 557.035 153.029 804.026 533.0
Figure 1.

Selected water losses performance indicators (WLP, WL% and WLL) – systems A and B

Figure 2.

Selected water losses performance indicators (RLL, ILI and NRWL) – systems A and B

Table 5.

Average values of WLP, WL% and WLL in different water network systems

Water network
IndicatorABAccording to [23]According to [24]According to [25]
WLP, dm3/(person·day)56.3121.9426.1No dataNo data
WL%, %38.0617.2821.4No data28.65
WLL, dm3/(h·km)137.0053.4572141246.38
Table 6.

Average water losses indicators in different water network systems

Water loses indicatorWater network systemLimit values according to
ABAccording toDVGW 1 [21]WBI 2 [22]AWWA 3 [21]IWA 4 [19]
[26][27]
RLL, m3/(day·km)2.861.061.2No data< 1.2No dataNo dataNo data
ILI, -1.640.560.92< 0.97< 1.5< 3< 1.5
NRWcon, dm3/(conn·day)234.7188.83No dataNo dataNo data< 75No dataNo data

11 Deutsche Vereinigung des Gas- und Wasserfaches e.V.

22 World Bank Institute

33 American Water Works Association

44 International Water Association

DOI: https://doi.org/10.21307/acee-2018-013 | Journal eISSN: 2720-6947 (formerly 1899-0142) | Journal ISSN: 1899-0142
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Language: English
Page range: 133 - 140
Submitted on: Jul 15, 2017
Accepted on: Feb 9, 2018
Published on: Apr 1, 2019
Published by: Silesian University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Group water system,
IWA balance,
Water losses,
Water losses coefficients, Water supply network
Related subjects:
Architecture and design,
Architecture,
Architects, buildings

© 2019 Małgorzata IWANEK, Paweł SUCHORAB, Artur CHOMA, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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