Chapter 02 · Nature, land & waterWater, Waste & Pollution
Light pollution
Definition
Light pollution is excessive, misdirected or intrusive artificial light that can affect ecosystems, human wellbeing or night-sky visibility.
References
This reference provides supporting context for how “Light pollution” is defined and used.
Overview
What it means in practice
Light pollution should be read as a pollution, water or waste term. Its meaning depends on the pollutant, source, pathway, location, threshold and measurement method.
In practice, users should state the boundary, source, measurement basis and evidence. That keeps light pollution specific enough for review without turning it into a broader claim.
Why it matters
Light pollution matters because pollution language can trigger different duties, risk judgments and community concerns depending on concentration, exposure, route and local conditions.
Common misconception
A common error is to use Light pollution without naming the pollutant, source, threshold or exposure route. Those details are what make the term reviewable.
Review questions
What source, boundary or measurement method gives the term meaning? What evidence supports it? What limitation would change how a reader interprets the claim?
How it is used
In professional practice, “Light pollution” helps designers, manufacturers, procurement teams, life-cycle practitioners and waste managers describe or assess excessive, misdirected or intrusive artificial light that can affect ecosystems, human wellbeing or night-sky visibility. It is commonly encountered in product design, procurement, footprinting, material selection, production and end-of-life decisions.
A credible application identifies the product system, life-cycle stages, functional unit, geography, timeframe and measurement method.