Question 1

What is the population of Sémézies-Cachan?

Accepted Answer

The commune of Sémézies-Cachan has 54 inhabitants per the INSEE census.

Question 2

Are there natural risks in Sémézies-Cachan?

Accepted Answer

Yes, Sémézies-Cachan is exposed to 2 natural risk(s): Rupture de barrage, Séisme. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Sémézies-Cachan?

Accepted Answer

Out of 4 ADEME EPCs available in Sémézies-Cachan, the most common label is C. 25% are rated A or B.

Question 4

What is the crime rate in Sémézies-Cachan?

Accepted Answer

In 2025, the crime rate in Sémézies-Cachan 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 Sémézies-Cachan?

Accepted Answer

Tap water in Sémézies-Cachan is compliant with quality standards. Source: ARS / Hub'eau. (48 analyses over 12 months)

Question 6

What is the air quality in Sémézies-Cachan?

Accepted Answer

According to LCSQA stations (5-year mean) in Sémézies-Cachan: PM2.5 : 8.6 µg/m³, NO₂ : 13.8 µg/m³, PM10 : 15.1 µg/m³. Source: LCSQA / Géod'air.