Question 1

What is the population of Massy?

Accepted Answer

The commune of Massy has 318 inhabitants per the INSEE census.

Question 2

Are there natural risks in Massy?

Accepted Answer

Yes, Massy is exposed to 3 natural risk(s): Affaissements et effondrements d'origine anthropique (anciennes carrières souterraines, hors mines), Mouvement de terrain, Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Massy?

Accepted Answer

Out of 22 ADEME EPCs available in Massy, the most common label is E. 18% are rated A or B.

Question 4

What is the crime rate in Massy?

Accepted Answer

In 2025, the crime rate in Massy was 0 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 Massy?

Accepted Answer

Tap water in Massy is compliant with quality standards. Source: ARS / Hub'eau. (19 analyses over 12 months)

Question 6

What is the air quality in Massy?

Accepted Answer

According to LCSQA stations (5-year mean) in Massy: PM2.5 : 9.7 µg/m³, NO₂ : 22.8 µg/m³, PM10 : 16.6 µg/m³. Source: LCSQA / Géod'air.