PBS Engineering Environmental, now operating as Apex Companies LLC, is a consulting and engineering firm providing energy, water resources and environmental services to both private and public sector clients. Founded in 1988, the company offers full-service solutions for routine and complex projects, with a team that has expanded its expertise and reach across the United States following a 2024 merger. They are well suited to receive referrals for clients needing comprehensive environmental and energy consulting services, or to hand on specialist work that falls outside their core areas.