Net Zero Target and Ozone in Sustainability Reports: How to Appear in ESG?
Introduction
For industrial facilities, the net zero target is no longer merely a future commitment — through CBAM (Carbon Border Adjustment Mechanism), supply chain audits, and corporate ESG reporting, it is generating concrete operational obligations today. So how does ozone technology — which delivers chemical-free production, water efficiency, and energy savings — become visible in this sustainability reporting?
This post is intended as a practical guide particularly for sustainability managers in the pharmaceutical, food processing, and textile sectors.
Which Reporting Frameworks Does Ozone Appear In?
GRI (Global Reporting Initiative): Under GRI 303 (Water and Effluents) and GRI 305 (Emissions) standards, the reductions in water consumption, wastewater load, and chemical disinfectant use delivered by ozone technology can be reported as measurable indicators. The 60–70% water consumption reduction achieved with ozone bleaching in the textile sector registers as a concrete gain in the GRI 303-5 (Water Consumption) indicator.
CSRD (Corporate Sustainability Reporting Directive): Under the EU's CSRD, which became mandatory in 2024, businesses are expected to report their environmental impact measurements in far greater detail. The reduction in chemical procurement costs (Scope 3 emission reduction) and process water recovery (water security commitment) are the two main contribution line items for ozone systems in this report.
ZDHC (Zero Discharge of Hazardous Chemicals): The ZDHC compliance certificate mandated by brands in textile, leather, and sportswear supply chains includes zero hazardous chemical discharge targets. Ozone directly raises the ZDHC compliance score by replacing chlorine-based bleaching and washing chemicals.
Ozone in the GMP and HACCP Framework: GMP (FDA 21 CFR, EU GMP Annex 1) in pharmaceuticals and HACCP plan validation in food processing offer the opportunity to document ozone's clinical-grade efficacy. Ozone's USP Chapter 1231 approval for process water sanitisation can become part of the regulatory compliance report for pharmaceutical companies.
Which Scope Emissions Do Ozone Systems Affect?
Ozone generators consume energy; this means Scope 2 (purchased electricity) emissions. However, the emission burden of the alternatives they replace is far higher:
Scope 3 reduction (supply chain): The elimination of production and transport emissions from chlorine, hydrogen peroxide, and other chemical disinfectants. Reducing chemical use by 80%+ in the textile sector creates a measurable reduction item in Scope 3 reporting.
Indirect Scope 1 reduction: 35–60% energy savings in ozone washing systems (through reduced hot water use) directly lowers process energy consumption. Emissions from water heating can be tracked under Scope 1 or 2.
How Is Ozone Documented in a Sustainability Report?
Practical steps for carrying an ozone system into a sustainability report:
1. Baseline measurement: Before the ozone system is commissioned, document chemical consumption (kg/year), water consumption (m³/year), and wastewater load (COD, colour, TOC). Without this reference point, gain reporting cannot be carried out.
2. System data logs: Real-time data logs generated by SCADA or ORP-controlled systems are the primary source documenting system efficiency and consistency. These logs can be used for both internal audit and third-party verification.
3. Wastewater analysis reports: Periodic wastewater analysis reports (COD, colour, TOC, microbiology) provide objective data proving ozone's contribution to wastewater quality.
4. CE/LVD certification: From the standpoint of documenting system reliability and regulatory compliance, CE and LVD-certified systems are becoming an unavoidable requirement in sustainability audits. Uncertified systems carry serious risk in supply chain audits.
The CBAM and Competitiveness Connection
From 2026, Turkish facilities exporting to Europe are obligated to report the carbon intensity of their production. Higher carbon intensity directly increases the payment due under CBAM. An ozone system that reduces chemical use, water consumption, and energy intensity creates a competitive advantage against rival countries in this calculation. Sustainability reporting turns this advantage from invisible into measurable and communicable.
The OCS Ozone Approach
At OCS Ozone, we are aware that the systems we install offer not just technical but reportable solutions. Our CE/LVD-certified devices, SCADA integration, and data log infrastructure make it possible for our customers to build the document chain they need for GRI, CSRD, and ZDHC reporting. Get in touch to jointly assess how ozone technology can support your sustainability targets.