Question 1

What is the population of Lanvallay?

Accepted Answer

The commune of Lanvallay has 4,235 inhabitants per the INSEE census.

Question 2

Are there natural risks in Lanvallay?

Accepted Answer

Yes, Lanvallay is exposed to 11 natural risk(s): Affaissements et effondrements d'origine anthropique (anciennes carrières souterraines, hors mines), Eboulement ou chutes de pierres et de blocs, Inondation, Mouvement de terrain, Par une crue à débordement lent de cours d'eau, Phénomène lié à l'atmosphère, Radon, Rupture de barrage, Séisme, Tassements différentiels, Tempête et grains (vent). Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Lanvallay?

Accepted Answer

Out of 462 ADEME EPCs available in Lanvallay, the most common label is C. 6% are rated A or B.

Question 4

What is the crime rate in Lanvallay?

Accepted Answer

In 2025, the crime rate in Lanvallay was 20.7 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 Lanvallay?

Accepted Answer

Tap water in Lanvallay is compliant with quality standards. Source: ARS / Hub'eau. (258 analyses over 12 months)

Question 6

What is the air quality in Lanvallay?

Accepted Answer

According to LCSQA stations (5-year mean) in Lanvallay: PM2.5 : 9.0 µg/m³, NO₂ : 10.4 µg/m³, PM10 : 17.5 µg/m³. Source: LCSQA / Géod'air.