Question juridique clé
Whether the public-law appeal was admissible against the cantonal judgment.
Solution extraite
The appeal was admissible as a public-law complaint against a final cantonal decision applying autonomous cantonal and communal law.
Motifs extraits
The Court held that the cantonal and communal rules retained autonomy despite Arts. 3a and 60a LEaux, but the remedy remained purely cassatory and had to be constitutionally motivated.