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Achieving Zero Discharge for a Sustainable Future
Key Features of Zero Liquid Discharge (ZLD) Certification
Zero Liquid Discharge is more than a compliance measure—it's a strategic investment in sustainability, efficiency, and corporate responsibility.
Towards a Zero Discharge Future
As industrial demand continues to grow and freshwater sources face increasing stress, efficient water management has become essential for both sustainability and long-term business growth.
- Eliminates wastewater discharge through complete recovery and recycling of treated water
- Reduces water wastage and pollution while safeguarding local water bodies and groundwater sources
- Improves operational efficiency and lowers costs through closed-loop water management
- Builds resilience against water scarcity and future resource challenges
- Demonstrates genuine leadership in sustainable water stewardship and supports United Nations Sustainable Development Goal 6
- Adopting Zero Liquid Discharge reflects a long-term commitment to responsible water use, environmental protection, and sustainable industrial growth.
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Key Focus Areas of Zero Liquid Discharge (ZLD) Certification
ZLD Certification focuses on a detailed evaluation of water use, treatment efficiency, and compliance to ensure complete wastewater recovery and environmental protection.
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Move Toward Total Water Recovery with ZLD Certification
Certification Benefits
Steps Toward Certification
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Step 1: Application and Contract Review
Begin the certification process by submitting your application and reviewing the contract. This step establishes the scope of assessment, applicable standards, and documentation required for ZLD verification.
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Step 2: Stage 1 – Desktop Review
Our auditors perform a detailed review of your water balance data, treatment system design and operational records to identify any initial gaps or improvement areas before the on-site assessment.
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Step 3: Stage 2 – Onsite or Online Audit
A comprehensive audit is conducted to verify the performance of your wastewater treatment, recovery and reuse systems. This includes checking processes like ETP, RO, MEE, and ATFD to ensure full compliance with ZLD standards.
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Step 4: Gap Closure and Certification Issuance
Organizations address any non-conformities identified during the audit. Once compliance is achieved the Zero Liquid Discharge Certification is issued, valid for 3 years, confirming your commitment to sustainable water management.
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Step 5: Surveillance Audits (Year 1 and Year 2)
Annual surveillance audits are carried out to ensure continuous compliance, effective maintenance of ZLD systems, and ongoing improvement in water recycling and recovery performance.
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Step 7 –Audit Planning and preparation
Prepare your audit plan with expert guidance to ensure a smooth certification process.
Steps Toward Certification
IRQS for Zero Liquid Discharge (ZLD) Certification
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Join the movement toward sustainable water management with the IRClass – IRQS Zero Liquid Discharge Certification. This certification confirms your organization's commitment to treating, recovering and reusing all wastewater, ensuring zero liquid discharge and protecting natural ecosystems. By implementing advanced treatment technologies and responsible sludge management, you reduce freshwater dependence, prevent pollution, and improve operational efficiency. ZLD Certification also strengthens regulatory compliance, supports ESG and sustainability goals, and enhances brand credibility.
Zero Liquid Discharge (ZLD)
- Reduce water acquisition cost and wastewater disposal risk
- Meet regulatory or supply-chain expectations in high-impact sectors
- Enhance your corporate sustainability credentials and stakeholder confidence
- Support operational efficiency by maximizing reuse and lowering fresh-water intake
- Defining the boundary, effluent streams and baseline for wastewater generation and reuse
- Documentation review of water/effluent flows, treatment systems, mass balance and reuse/recycle schemes
- On-site or remote audit of systems, controls, performance data and monitoring of discharge/reuse practices
- Verification that liquid discharge is effectively eliminated and all water is reused or safely managed
- Issuance of a certificate and supporting report confirming compliance and performance
- A formal ZLD Certification Statement or certificate issued by IRQS confirming your facility’s closed-loop water status
- A detailed assessment/report covering findings, audit evidence, improvements, and verification of zero liquid discharge
- Communication-ready materials (logo, certificate text) to showcase your ZLD commitment to stakeholders and supply-chains
- Water-use and wastewater-generation data (volumes, types of effluent)
- Treatment and reuse system description, flow diagrams, mass balance of wastewater streams
- Monitoring records of reuse, discharge (if any), and performance data of treatment systems
- Policies, roles and responsibilities for water/effluent management; internal audit and review records
- Evidence that no liquid effluent is discharged outside facility boundaries (or reused fully)
Get Certified with Confidence
Start your journey today with trusted experts in certification, assurance and training who make the process simple seamless and stress free.
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