The extent of on-site leakage in selected suburbs of Johannesburg

This study investigated on-site leakage on 182 properties with relatively new municipal water meters in well-established suburbs of Johannesburg. A methodology was developed to estimate the on-site leakage rate from readings taken from these municipal water meters, which was then adjusted to account...

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Vydané v:Water S. A. Ročník 38; číslo 1; s. 127 - 132
Hlavní autori: Lugoma, M.F.T., Van Zyl, J.E., Ilemobade, A.A.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Gezina Water Research Commission (WRC) 01.01.2012
Water Research Commission
Predmet:
Apparent losses
Categories
Consumption
Extent of on-site leakage
Flats
Leakage
Measuring instruments
Metering
Meters
Municipal water
Residential
Residential and non-residential
Stands
Suburban areas
Suburbs
Water supply
South Africa
Johannesburg South Africa
ISSN:0378-4738, 1816-7950, 0378-4738
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Shrnutí:This study investigated on-site leakage on 182 properties with relatively new municipal water meters in well-established suburbs of Johannesburg. A methodology was developed to estimate the on-site leakage rate from readings taken from these municipal water meters, which was then adjusted to account for metering errors. The results were analysed in 2 categories: 'Residential' properties, which consisted of single houses on individual stands, and 'Other' properties, which consisted of non-residential users and blocks of flats. A high incidence, 64%, of measurable on-site leakage was found. The average on-site leakage rates on 'Residential' and 'Other' properties were found to be 12 and 29 kℓ/month per property, respectively. In both cases, this represented 25% of measured consumption. Apparent losses due to on-site leakage were determined to be 10% of the on-site leakage, or 3% of total consumption.
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ISSN:0378-4738
1816-7950
0378-4738
DOI:10.4314/wsa.v38i1.15