Terra Ligéris

Terra Ligéris is an independent geology and hydrology consultancy based in Saumur, serving Maine-et-Loire and the wider Loire Valley. Led by a geological engineer with more than 35 years of experience and recognised expertise with Courts of Appeal, the firm supports private individuals, businesses, local authorities and legal bodies with practical assessments and regulatory guidance.

Its services include stability diagnostics for caves, hillsides, troglodyte dwellings and other terrain, assessment of risks such as collapse and landslides, and recommendations for stabilisation and safety works. Terra Ligéris also advises on underground public-access premises. For water and groundwater projects, it provides support for creating or regularising wells and boreholes, filing declarations, protecting water sources and managing groundwater. Hydrology services cover stormwater, infiltration, flood risk, groundwater monitoring and pollution, as well as related regulatory studies.

The consultancy works by appointment from its Saumur address and generally operates within 150 kilometres, across several neighbouring departments, with wider travel considered depending on the request.