Question 1

What is the population of Billy-sous-Mangiennes?

Accepted Answer

The commune of Billy-sous-Mangiennes has 358 inhabitants per the INSEE census.

Question 2

Are there natural risks in Billy-sous-Mangiennes?

Accepted Answer

Yes, Billy-sous-Mangiennes is exposed to 7 natural risk(s): Affaissements et effondrements (cavités souterraines hors mines), Engins de guerre, Inondation, Mouvement de terrain, Par une crue à débordement lent de cours d'eau, Tassements différentiels, Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Billy-sous-Mangiennes?

Accepted Answer

Out of 28 ADEME EPCs available in Billy-sous-Mangiennes, the most common label is E. 7% are rated A or B.

Question 4

What is the crime rate in Billy-sous-Mangiennes?

Accepted Answer

In 2025, the crime rate in Billy-sous-Mangiennes 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 Billy-sous-Mangiennes?

Accepted Answer

Tap water in Billy-sous-Mangiennes is compliant with quality standards. Source: ARS / Hub'eau. (42 analyses over 12 months)

Question 6

What is the air quality in Billy-sous-Mangiennes?

Accepted Answer

According to LCSQA stations (5-year mean) in Billy-sous-Mangiennes: PM2.5 : 8.6 µg/m³, NO₂ : 12.5 µg/m³, PM10 : 14.8 µg/m³. Source: LCSQA / Géod'air.