Sustainability Assurance and Verification
Strengthen Reporting with Independent Validation

Discover What Environ Can Do For You.

About Sustainability Assurance and Verification

Ensure the credibility and accuracy of your sustainability disclosures with our Assurance and Verification solution. As sustainability reporting requirements continue to evolve, our third-party verification services provide the assurance you need to meet stakeholder expectations and regulatory demands.

Our 4-Step Process

Step 1

Risk Assessment

Evaluate underlying management systems and internal controls to assess reporting risks. Ensure reporting boundaries appropriately reflect operations to maintain data integrity and regulatory alignment

Step 2

Data Verification

Verify data accuracy through a structured review process, ensuring consistency with standards, such as the greenhouse gas (GHG) Protocol for emissions, and best practices.

Step 3

Compliance Review

Ensure compliance by aligning disclosures with globally recognized frameworks, including the Corporate Sustainability Reporting Directive (CSRD), Global Reporting Initiative (GRI) and International Reporting Standards (IFRS), leveraging assurance standards like AccountAbility and the International Standard on Sustainability Assurance (ISSA) 5000.

Step 4

Final Certification

Obtain an official assurance statement to demonstrate regulatory compliance, enhance investor confidence, and show transparency in public sustainability reporting.

Why Choose Environ’s ISOS Group?

Expertise, Compliance, and Trust

Hundreds of companies rely on ISOS Group, a division of Environ, for independent Assurance and verification Services. This team of industry expertise with in-depth regulatory knowledge and a commitment to sustainability understands the nuances of sustainability and ESG reporting across multiple industries, ensuring that your disclosures align with global best practices. We continuously monitor regulatory requirements, including the EU CSRD, IFRS Sustainability Disclosure Standards (ISSB), the U.S. SEC climate disclosure rule, and California’s climate-related disclosure acts.

Industries We Serve

We deliver innovative energy and sustainability solutions to thousands of commercial, industrial, and non-profit organizations for strengthened environmental accountability and transparency across supply chains.

What our clients say

Expert guidance, proven results.

“Sustainability Assurance is a valuable exercise - we keep learning more each year and improving our processes and accuracy as a result. We have appreciated Environ's ISOS Group for their support and guidance along the way.”

Chantal BeaudoinPartner, Head of ESG Knight Frank Investment Management

“We thoroughly enjoyed working with Environ’s ISOS Group throughout our assurance process. From prompt, clear communication during our engagement to extensive review of our ESG report’s data, the ISOS Group team made our first assurance experience very seamless. We would recommend them to other firms who are looking to assure their report data for the first time or engage with an experienced partner.” 

Isela Rosales Managing Director, Head of ESG & Sustainability Bridge Investment Group 

Leadership You Can Trust

Brian Noveck – VP, Assurance & Verification, Environ

Organizations put a lot of effort into meeting regulatory and voluntary sustainability commitments. The information is complex. Validating those efforts and the required reports to ensure accuracy and to instill confidence in their mission is critical to their credibility with customers and investors. We have been a leading independent source in the market for 15 years – and we take this work seriously as your trusted advisor.

Key Solution Benefits

Obtaining independent sustainability assurance strengthens your organization’s credibility and ensures compliance with global sustainability frameworks.

Here are the key benefits your solution provides:

Enhanced Credibility and Trust Third-party verification improves stakeholder confidence, reinforcing transparency and accountability in sustainability disclosures.
Regulatory and Standards Compliance Stay ahead of evolving regulations including CSRD, GRESB, CDP, Sustainability Accountability Standards Board (SASB), and Force on Climate-Related Climate Disclosures (TCFD), to minimize compliance risks. We also verify sustainability reports in accordance with GRI, ensuring materiality and social metrics meet reporting best practices.
Competitive Advantage Verified sustainability data strengthens your ability to attract investors, customers, and business partners focused on sustainability. Our services also support awards and recognition submissions.
Operational Efficiency A structured verification process enhances sustainability reporting accuracy, streamlining data collection, performance tracking, and compliance efforts.
De-Risk your Business with Proactive Risk Management We take a tailored approach to verification and help you identify reporting gaps early and mitigate risks before regulatory scrutiny.

For 15 years, the ISOS Group, a division of Environ, has put their stamp on ESG and sustainability reports for accuracy, credibility, transparency, and accountability. ISOS has become the industry standard for 3rd party, validated reports investors and stakeholders can trust. Our service brings you recognition for meeting rigorous standards and best practices, elevating your performance scores for globally recognized benchmarks.

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