Page 815 - Shaping smarter and more sustainable cities - Striving for sustainable development goals

6.2.1 Environmental sustainability

This clause lists the core indicators defined for environmental sustainability.
There are 10 indicators in this dimension, covering air pollution, GHG emissions, renewable energy,
energy saving in households, environment perception, quality of water resources, recycling of waste,
noise and soil pollution, and green areas etc.

Sub‐dimension Indicator Description

D2.1 Air quality I2.1.2 Air pollution intensity Level of particles and toxic substances. (*)
NOTE – This includes toxic substances and
particles such as PM10 and PM2.5.

D2.2 CO2 emissions I2.2.1 GHG emissions Amount of GHG emissions per capita. (*)
(**) NOTE – It is preferred to distinguish
between emissions emerging from
industrial (manufacturing, construction),
commercial, household, transport, and
waste disposal, etc.
D2.3 Energy I2.3.1 Use of alternative and Proportion of renewable energy consumed
renewable energy in the city. (*)
NOTE – Renewable energy sources include
geothermal, solar thermal, solar voltaic,
hydro, wind, and combustible renewable
sources and waste (composed of solid
biomass, liquid biomass, bio‐gas, industrial
waste and municipal waste).

I2.3.2 Energy saving in households Energy saving in households compared to a
baseline. (*)
NOTE – The baseline may be either a
previous measurement or a reference
value.
NOTE – It would be preferred to distinguish
between households with and without
smart meters, and with and without home
automation systems.

D2.5 Water, soil and I2.5.3 Quality of city water Quality of water resources (rivers, lakes
noise resources etc.). (*)
NOTE – Pollution of water resources
includes (but is not limited to) acidity,
organic, floatables, alga, chemical
substances and bacteria, etc.

I2.5.4 Recycling of waste Proportion of waste recycled compared to
total collected waste. (*)

I2.5.5 Exposure to noise Proportion of the city inhabitants with
noise levels above international/national
exposure limits at home. (*)
NOTE – Noise is measured as sound
pressure in accordance with relevant
international/national standards.

ITU‐T's Technical Reports and Specifications 805