Question 1

What is the population of Jouy-en-Josas?

Accepted Answer

The commune of Jouy-en-Josas has 7,985 inhabitants per the INSEE census.

Question 2

Are there natural risks in Jouy-en-Josas?

Accepted Answer

Yes, Jouy-en-Josas is exposed to 2 natural risk(s): Rupture de barrage, Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Jouy-en-Josas?

Accepted Answer

Out of 275 ADEME EPCs available in Jouy-en-Josas, the most common label is D. 4% are rated A or B.

Question 4

What is the crime rate in Jouy-en-Josas?

Accepted Answer

In 2025, the crime rate in Jouy-en-Josas was 26.6 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 Jouy-en-Josas?

Accepted Answer

Tap water in Jouy-en-Josas is compliant with quality standards. Source: ARS / Hub'eau. (268 analyses over 12 months)

Question 6

What is the air quality in Jouy-en-Josas?

Accepted Answer

According to LCSQA stations (5-year mean) in Jouy-en-Josas: PM2.5 : 10.9 µg/m³, NO₂ : 20.6 µg/m³, PM10 : 21.3 µg/m³. Source: LCSQA / Géod'air.