REGNY Billard
Saint-Symphorien-de-Lay, Auvergne-Rhône-Alpes
REGNY Billard is an advanced wastewater treatment plant in Saint-Symphorien-de-Lay, Auvergne-Rhône-Alpes, France. It serves a population of 2,661 and discharges treated effluent into the local watershed.