Who We Are
Onterris is a global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect.
Sectors
Access deep environmental expertise tailored to your industry, with solutions built for real-world conditions.
Solutions
Prepare for escalating environmental risks with expert solutions designed to perform under pressure.
Our Thinking
Explore briefs, perspectives and articles that turn insight into action. Discover thought leadership that informs decisions and drives impact. See the ideas shaping environmental solutions and guiding your next move.
Cuture & Careers
Where brilliant people come together to turn environmental science into real-world progress for communities, industry and the planet.

Energy

A Smarter Air Permitting Strategy for a Texas Refinery

Strategic planning creates a more efficient permitting pathway and keeps critical refinery modernization on schedule

Accelerating Remote Groundwater PFAS Treatment with Modular Systems

Compact deployment, remote operation and a reliable treatment design supported consistent PFAS treatment across six groundwater sites

Air Quality Litigation Risk Is Rising for Industrial Facilities

Proactive air management and community strategy now shape legal exposure as much as compliance

Air Release Incidents: A Facility’s First Estimate Shapes What Follows

The first emissions estimate can influence regulatory, legal and public outcomes long after the release ends

Appendix K Certification: Why OGI Compliance Demands Expertise and Discipline

The technical standard that determines whether your methane emissions data withstands regulatory scrutiny

Battery Storage Is Becoming the Grid’s Reliability Backbone

Speed will strengthen reliability and flexibility will drive long-term advantage



Benzene at the Fenceline: The Public Metric Downstream Operators Can’t Treat Reactively

Why benzene is becoming a clear test of environmental maturity and operational assurance

British Columbia Raises the Bar on Methane Reduction

Updated methane rules require stronger monitoring, tighter venting controls and equipment upgrades

Can Environmental Programs Keep Pace with Production in the Permian Basin?

Learn how leading operators are building connected, defensible programs that scale with today’s operations and tomorrow’s opportunities

Canada’s Federal VOC Regulations: What Facility Operators Need to Prioritize

Federal VOC Regulations Phase 2 focus on emissions from petroleum liquid storage tanks and loading racks, with phased requirements now in effect for affected facilities.