Page 50 - U4SSC Collection Methodology for Key Performance Indicators for Smart Sustainable Cities

Collection Methodology for Key Performance Indicators for Smart Sustainable Cities

Dimension Economy
Sub-Dimension Infrastructure
Category Water and Sanitation
KPI Name Water Supply Loss
KPI No. EC: I: WS: 3C Type: Core Type: Sustainable

Definition / Percentage of water loss in the water distribution system
Description

Rationale / Water loss from distribution systems is a problem in almost all conurbations around
Interpretation / the world, but can be a serious issue in areas where water is scarce. This problem
Benchmarking deserves immediate attention and appropriate action to reduce avoidable stress on
scarce and valuable water resources.
Reducing water losses in urban drinking water supply networks could make a
substantial contribution to making progress in achieving SDG 6.
Water losses in urban networks not only lead to economic losses for the utilities,
but also reduce the number of people that have access to water. Where urban
water supplies are concerned, minimizing losses from the system to the lowest
technically feasible level is an urgent requirement.
Water supplied is the actual volume of water supplied by the utility to the
distribution system.
Utilized water is volume of water that is actually billed by the water supply utility.
The differences between the two values can be derived from multiple sources but
are generally due to leaks in the system and unauthorized use.
An improving trend and higher values are considered positive.

Source(s) Integrated Monitoring Guide for SDG 6 - UN Water 2016. Retrieved from
<http://www.unwater.org/publications/integrated-monitoring-guide-sdg-6/>
Progress on drinking water, sanitation and hygiene: 2017 update and Sustainable
Development Goal baselines. Retrieved from <https://washdata.org/report/jmp-
2017-report-launch-version0> (also available at:
<http://www.unwater.org/publication_categories/whounicef-joint-monitoring-
programme-for-water-supply-sanitation-hygiene-jmp/>
Methodology Calculate as:
Numerator: Volume of water supplied minus the volume of utilized water (l/year).
Denominator: Total volume of water supplied (l/year).
Multiply by 100
Unit Percentage
Data Sources / Data can be provided through the local water supply utility.
Relevant
Databases
SDG Reference(s) SDG Target 6.4: By 2030, substantially increase water-use efficiency across all
sectors and ensure sustainable withdrawals and supply of freshwater to address
water scarcity and substantially reduce the number of people suffering from water
scarcity.

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