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Leakage in the selected study areas was assessed using flow data recorded by the loggers and the records obtained from the billing section. Table 4 presents the estimated leakage from the study areas.

Table 4

Estimated leakage in the four selected study areas

Estimated water leakage
Water supply area and year of constructionAverage ENF (Equation (2)) (m³/hr)Average monthly leakage (Equation (3)) (m3)Average zone daily flow (m³/hr)Equivalent monthly supply (m3)% of supplym3/conn/mthm3/km/mth
Budiriro (1989–1992) 156.2 112,464 586.1 421,992 26.7 9.9 1,247.3 
Belvedere (1972) 63.9 46,008 181.1 130,392 35.3 24.2 467.4 
Glen View (1978) 124.4 89,568 399.1 287,352 31.2 4.0 407.5 
Mabelreign (1965) 85.6 61,632 234.3 168,696 36.5 6.4 219.0 
Estimated water leakage
Water supply area and year of constructionAverage ENF (Equation (2)) (m³/hr)Average monthly leakage (Equation (3)) (m3)Average zone daily flow (m³/hr)Equivalent monthly supply (m3)% of supplym3/conn/mthm3/km/mth
Budiriro (1989–1992) 156.2 112,464 586.1 421,992 26.7 9.9 1,247.3 
Belvedere (1972) 63.9 46,008 181.1 130,392 35.3 24.2 467.4 
Glen View (1978) 124.4 89,568 399.1 287,352 31.2 4.0 407.5 
Mabelreign (1965) 85.6 61,632 234.3 168,696 36.5 6.4 219.0 

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