Kernrechtsfrage
Whether the old Solothurn water rights are contractual claims or protected historical property rights.
Extrahierter Entscheid
The water rights are historical ehehafte, dinglich protected rights, not merely terminable contractual rights.
Extrahierte Begründung
They originated in pre-modern legal orders, were always tied to land, continuously recognized and exercised, and were treated as absolute rights limiting the municipality's power over water supply.