S.R.I.W. Environnement S.A. is a private equity and venture capital firm specializing in middle market, later stage, mature, emerging growth, early venture, mid venture, late venture, industry consolidation, buyout, growth capital, venture debt, and mezzanine investments in the environment sector. The firm seeks to make investments in Wallonia through shareholdings in companies with a focus on companies that are involved in the establishment of industrial processes. The firm makes balance sheets investments. S.R.I.W. Environnement S.A. is based in Liège, Belgium.