Stronger global economies push environmental work despite uncertain federal regulations and delayed infrastructure investment.

Contractor, new to the Top 200 Environmental Firms list, sees reward in water-wastewater sector expansion.

Top 200 Environmental Firms newcomer sees its virtual approach as a competitive edge.

Twenty-five years ago, German contracting and industrial giant Bauer AG, based near Munich, formed a corporate unit to contend with contamination on its local construction sites. Now it's a $200-million-plus global business.

The Top 200 Environmental Firms held their own in 2016, even as the election of Donald Trump, an uncertain post-Brexit Europe and still-sluggish oil prices loomed over the environmental marketplace.