Bringing Quality and Sustainability to Our Communities
A Texas-based water resources and environmental engineering firm.
With a reputation built by our founder, Rich Oller, on water and wastewater operations and management, our purpose is to provide a “boots-on-the-ground” approach to solving our clients’ problems. At OEI, we have, and continue to, place the utmost importance on our client relationships and assuring solutions that bring concepts to fruition.
Our Trusted Clients
See our latest news, insights, and customer stories from our thought leaders.