Question 1

What is the population of Saint-Jean-d'Hérans?

Accepted Answer

The commune of Saint-Jean-d'Hérans has 308 inhabitants per the INSEE census.

Question 2

Are there natural risks in Saint-Jean-d'Hérans?

Accepted Answer

Yes, Saint-Jean-d'Hérans is exposed to 10 natural risk(s): Affaissements et effondrements d'origine anthropique (anciennes carrières souterraines, hors mines), Eboulement ou chutes de pierres et de blocs, Glissement de terrain, Inondation, Mouvement de terrain, Par remontées de nappes naturelles, Par ruissellement et coulée de boue, Par une crue à débordement lent de cours d'eau, Rupture de barrage, Séisme. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Saint-Jean-d'Hérans?

Accepted Answer

Out of 29 ADEME EPCs available in Saint-Jean-d'Hérans, the most common label is D. 0% are rated A or B.

Question 4

What is the crime rate in Saint-Jean-d'Hérans?

Accepted Answer

In 2025, the crime rate in Saint-Jean-d'Hérans 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 Saint-Jean-d'Hérans?

Accepted Answer

Tap water in Saint-Jean-d'Hérans is non-compliant on some parameters. Source: ARS / Hub'eau. (183 analyses over 12 months) Exceedances were observed for: bactériologie.

Question 6

What is the air quality in Saint-Jean-d'Hérans?

Accepted Answer

According to LCSQA stations (5-year mean) in Saint-Jean-d'Hérans: PM2.5 : 10.6 µg/m³, NO₂ : 16.0 µg/m³, PM10 : 17.3 µg/m³. Source: LCSQA / Géod'air.