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.

Government

Environmental compliance, permitting and scientific expertise supporting federal agencies, defense installations and public infrastructure programs from planning through long-term stewardship.
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Safety helmets and construction plans in the foreground with workers discussing a building project in the background.
INTRO

High-stakes decisions demand environmental certainty

Government agencies make environmental decisions that influence infrastructure resilience, public health, natural resources and community confidence. Federal programs must meet strict regulatory requirements while delivering critical services and long-term stewardship of public assets.

Our specialists support agencies with environmental compliance, permitting, scientific investigation and risk management, providing the evidence and clarity needed to guide decisions that shape the public future.
Why it matters

Environmental scrutiny of government decisions has never been greater

Government agencies operate under growing environmental scrutiny from regulators, communities and oversight bodies. Federal programs must meet statutory obligations while delivering infrastructure, national security and public services.

Frameworks such as the National Environmental Policy Act (NEPA), Clean Air Act, Clean Water Act and Resource Conservation and Recovery Act (RCRA) require defensible data, careful planning and consistent compliance. Agencies must also address emerging contaminants, climate risk and aging public infrastructure.

Without clear environmental insight, projects stall, costs increase and public confidence erodes. Effective environmental governance enables agencies to meet obligations, protect communities and deliver programs with transparency, accountability and long-term stewardship.
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Environmental technician analyzing data on a laptop in a laboratory setting.

Turning environmental evidence into confident government action

Our multidisciplinary teams combine environmental science, regulatory expertise and operational experience, transforming complex environmental data into clear guidance for government programs and decisions.
Circular clarifier tank at a wastewater treatment facility with clean water and mechanical equipment under clear sky.

Expertise for responsible government action

Explore our environmental services and solutions that support government agencies from compliance and permitting through long-term stewardship of public resources.
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Permitting & Compliance

Working through air, water and land permitting requirements and building compliance programs that hold up under regulatory review, across regulated industries.
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Health, Safety & Chemistry

Bringing scientific precision to critical decisions
Laboratory technician handling samples during environmental testing.

Emerging Contaminants

Identify, assess and manage PFAS and other emerging contaminants with advanced science, regulatory insight and integrated environmental solutions.
Sector leader

Meet your Government sector leader

Connect with our government specialists to strengthen federal programs, infrastructure and public mission outcomes.

Government Spotlight

California El Niño: Regulatory Guidance for Emergency Stream and Channel Work

Prepare for California El Niño impacts with guidance on emergency stream and channel work, regulatory coordination, documentation and response planning.

CERCLA Liability Exemptions for Brownfield Buyers

Learn which CERCLA liability exemptions and defenses may apply to brownfield owners, and why due diligence, AAI and documentation still matter.

Ontario O. Reg. 406/19: 2027 Excess Soil Rules

Ontario’s excess soil landfill restriction takes effect Jan. 1, 2027. Learn how O. Reg. 406/19 affects reuse planning, QP support and project schedules.

Odor Complaints Need Chemistry

Odor complaints often begin with someone reporting a smell in the environment: rotten eggs, chemical-like or something foul

Why Consistent Implementation Is the Real Test of Disaster Recovery Policy

U.S. GAO report demonstrates how inconsistent implementation can undermine disaster recovery programs

Keeping Sydney Metro West Tunnelling On Track With Audit-Backed Environmental Delivery

A multi-site investigation, remediation and validation program aligned with NSW EPA accredited Site Auditor review cycles enables construction teams to progress safely and confirm site suitability

Critical Thinking in Data Validation: How Small Errors Can Have Big Impacts

Critical thinking and professional judgment help uncover small data issues before they become costly project risks

Before You Buy a Brownfield: Keep the Bona Fide Prospective Purchaser Defense Intact

Environmental liability protection begins with thorough pre-acquisition due diligence, but preserving that protection requires buyers to actively manage environmental obligations after closing.

Brownfields After the BIL Funding Peak: What EPA’s Planning Signals Reveal About 2027

Opportunity remains with U.S. EPA Brownfields Funding, but fiscal year 2027 will reward communities that combine disciplined planning, evidence-based decision-making and strong execution

Turning Odor Signals Into Operational Intelligence

For solid waste and wastewater treatment facilities, real-time odor monitoring connects complaints, weather, operations and chemical data so teams can act faster

U.S. Courts Challenge Federal Permitting Delays for Renewable Energy Projects

Court ruling curbs procedural delays as power demand surges

Protect Data Integrity with Historical Review

Reveal contamination, sample switches and other errors that compliant laboratory data may still miss

Delivering A PFAS Treatment Solution For Sydney Water

Rapid PFAS treatment deployment enables Australia’s largest water utility to meet drinking water guidelines and build community trust

Brownfield Due Diligence: AAI & Phase I ESA

Learn how All Appropriate Inquiries (AAI) and a current Phase I ESA help brownfield buyers manage CERCLA liability before closing and after acquisition.

Strengthening Superfund Data Confidence Through Chemist-Led Validation

Early chemist review proactively elevated data quality by confirming that automated quality control matched the method intent, a step beyond standard practice, adding an extra layer of assurance