Question 1

What is the population of Fontenay-lès-Briis?

Accepted Answer

The commune of Fontenay-lès-Briis has 2,322 inhabitants per the INSEE census.

Question 2

Are there natural risks in Fontenay-lès-Briis?

Accepted Answer

Yes, Fontenay-lès-Briis is exposed to 2 natural risk(s): Inondation, Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Fontenay-lès-Briis?

Accepted Answer

Out of 136 ADEME EPCs available in Fontenay-lès-Briis, the most common label is D. 10% are rated A or B.

Question 4

What is the crime rate in Fontenay-lès-Briis?

Accepted Answer

In 2025, the crime rate in Fontenay-lès-Briis was 11.1 offences per 1,000 inhabitants (burglaries, theft, violence, vandalism). Source: SSMSI / French Ministry of the Interior.

Question 5

Is the tap water safe to drink in Fontenay-lès-Briis?

Accepted Answer

Tap water in Fontenay-lès-Briis is compliant with quality standards. Source: ARS / Hub'eau. (73 analyses over 12 months)

Question 6

What is the air quality in Fontenay-lès-Briis?

Accepted Answer

According to LCSQA stations (5-year mean) in Fontenay-lès-Briis: PM2.5 : 12.1 µg/m³, NO₂ : 29.1 µg/m³, PM10 : 17.4 µg/m³. Source: LCSQA / Géod'air.