Page 78 - U4SSC Collection Methodology for Key Performance Indicators for Smart Sustainable Cities

Collection Methodology for Key Performance Indicators for Smart Sustainable Cities

Dimension Environment
Sub-Dimension Environment
Category Water and Sanitation
KPI Name Water Consumption
KPI No. EN: EN: WS: 2C Type: Core Type: Sustainable

Definition / Water consumption per capita
Description

Rationale / Consumption of water per person depends on:
Interpretation / ▪ the availability and price of water;
Benchmarking ▪ the climate; and
▪ the uses of water (drinking, bathing, washing, and gardening).
In many cities, potable water supply is not constant and households rely on a few
hours to tap the available water during the day. Water consumption is much higher
in cities of higher income countries.
Typically, people in cities of developed countries use 272 litres per day while the
average in Africa is 53 litres per day. North American cities use, on average, double
the amount of water per person than Western European cities, and seven times
that of African cities.
Water consumption should include all water used within the city.
Water consumption per capita should be in line with the sustainable water
resources available.
A declining trend and lower values are considered positive.
Source (s) Urban Indicators Toolkit. Retrieved from
<http://www.conei.sp.gov.br/ind/urbanindicators_urbanobservatory.pdf>

Methodology Calculate as:
Numerator: Total amount of water consumption in cities (ℓ /day).
Denominator: Total number of city inhabitants.

Unit ℓ / day / capita.
Data Sources / Data can be obtained from water supply utilities.
Relevant United Nations (2002): GLOBAL URBAN INDICATORS DATABASE
Databases http://unhabitat.org/books/global-urban-indicators-database/global-urban-
indicators-database/

SDG Reference(s) SDG Indicator 6.4.1: Change in water-use efficiency over time.

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