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Good practice Imported

CurieuzeNeuzen Vlaanderen — Belgium's 20,000-Point Citizen Science Air Quality Map

Belgium · Antwerp · See the Belgium profile

Evidence: Observational / pre–post Top 17% 81/100 · Ask Evidence Copilot about this practice

In 2018, 20,000 Flemish households, schools and firms measured street-level NO2 with passive tubes for a month, reaching 96% valid data and exposing hotspots above EU limits — a model since repeated in Antwerp and Brussels.

20,000
Households, schools and businesses selected (2018)
53,000
Applicants (2018)
over 99%
Tubes returned (2018)
96% of 19,161 samples
Valid readings (2018)
89%
Samples passing stricter quality screening (2018)
45-50 ug/m3
NO2 hotspot concentration recorded in Bruges (2018)
CurieuzeNeuzen Vlaanderen — Belgium's 20,000-Point Citizen Science Air Quality Map

Details

Maturity
Scaling
Promoter
University of Antwerp / Flemish Environment Agency (VMM) / VITO / HIVA-KU Leuven / De Standaard
Period
2018–2021
Keywords
air quality, citizen science, environmental health, public health, urban environment

Context

CurieuzeNeuzen Vlaanderen was a month-long citizen-science air-quality campaign led by the University of Antwerp with the Flemish Environment Agency (VMM), VITO, KU Leuven's HIVA institute and newspaper De Standaard, deploying NO2 passive-sampler tubes across Flanders in April-May 2018.

Objectives

The campaign aimed to produce a fine-grained, street-level public map of NO2 pollution to sharpen air-quality modelling and public awareness, rather than to mandate policy directly.

Activities

From 53,000 applicants, 20,000 households, schools and businesses hung two NO2 tubes for a month; quality screening narrowed the sample used in the final statistical analysis feeding the ATMOSYS air-quality model.

Results

Near-total tube return and a high valid-data rate produced a street-level map revealing sharp block-by-block variation, including a hotspot in Bruges above the EU's annual NO2 limit.

Conclusions

The campaign's scale and rigour made the protocol replicable, with follow-up editions run in Antwerp and Brussels adapting the same method to different city administrations.

Implementation
Indicative cost
Medium (€50k–€500k)
Time to results
Short (< 1 year)
Staffing & skills
university researchers (environmental/public health science), VMM and VITO technical staff, volunteer households, schools and businesses as citizen scientists

Conditions for success

  • multi-stakeholder partnership spanning a university, government agency, research institute, academic unit and media partner
  • a simple passive-sampler protocol that supports high participant compliance
  • a media partner (De Standaard) supporting public recruitment and dissemination

Common failure modes

  • no evidence of targeted outreach to lower-income or marginalised residents
  • each edition requires a fresh multi-month volunteer and lab cycle rather than continuous operation

Where it fits

Governance type
university-government-NGO partnership
Scale
regional (Flanders-wide)
Income level
high-income

Commonly funded by

National / regional programmes LIFE Programme

Indicative funding routes for practices of this type — always check each programme's current calls and eligibility rules.

Replication kit

Reusable artefacts from this practice — as published by their sources.

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Data sources

Where this practice's information was retrieved from, and when.

Attachments

Where it's been adopted

Documented replications and adaptations of this practice elsewhere.

PlaceWhenAdopterOutcome
Brussels, Belgium — CurieuzenAir campaign Adapted the same passive-sampler protocol to Brussels' city administration and citizen base.
Antwerp, Belgium 2020 CurieuzeLucht campaign Adapted the same passive-sampler protocol to a city-scale citizen-science air-quality campaign in Antwerp.

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