Water Audit in India

A water audit is a systematic assessment of an industrial facility’s entire water lifecycle—from intake and usage to discharge and recycling. The objective is to develop a comprehensive water balance, identify inefficiencies, quantify losses (such as leaks or unauthorized withdrawals), and propose targeted measures for improved water efficiency.

For industrial facilities, a well-executed water audit offers quantifiable and strategic benefits:

• Water and Cost Savings: Identify high-consumption zones, leaks, and non-revenue water to reduce usage and operational expenses.
• Regulatory Compliance: Demonstrate adherence to CGWA, CPCB, and SPCB mandates, especially in water-stressed zones or where NOCs are required.
• ESG & Sustainability Reporting: Enhance transparency in environmental disclosures, complying with industry accepted standards and guidelines, viz, Global Reporting Initiative (GRI), Business Responsibility and Sustainability Reporting (BRSR) and CDP, contributing to improved investor and stakeholder confidence.
• Operational Resilience: Anticipate water-related risks and avoid production disruptions due to water scarcity or infrastructure failures.
• Energy-Water Nexus Gains: Lower energy costs linked to pumping, heating, and treating water.

Environmental statutes, mandates, and efficiency frameworks guide industrial water audits in India. Key regulations include:

• Central Ground Water Authority (CGWA): Has mandated water audits every six months for industries drawing more than 100 m³/day of groundwater. NOCs require the implementation of audit recommendations and water conservation measures. 
• Central Pollution Control Board (CPCB): Prescribes discharge standards and mandates monitoring of effluents under the Water (Prevention and Control of Pollution) Act, 1974. Abiding by the Water Act is necessary for industries in Himachal Pradesh and Rajasthan, after the 2024 amendment. 
• State Pollution Control Board (SPCB): Enforce water-oriented compliance at the state level, including requirements for water balance documentation and real-time monitoring systems (RT-DAS)
• National Water Policy, 2012: Advocates water efficiency via water footprint and water auditing. Impresses upon the need for environmental impact assessment for water-intensive industries. 
• Jal Shakti Abhiyan: Promotes industrial participation in rainwater harvesting and recharge as part of national water conservation strategies. 

These frameworks and regulations have lifted water audits from a sustainability best practice to a compliance necessity and proactive conservation efforts of a responsible entity. 

Across both Indian and international contexts, leading industrial water audits apply best practices that ensure actionable results. 

India-specific practices include:

• Adoption of sector-specific benchmarks, based on water intensity
• Using automated flow meters and telemetry systems for more accurate measurement. 
• Integration with ISO 14001 and ISO 50001 systems for broader resource efficiency. 

The cost of a water audit varies based on several factors:

• Size and complexity of the facility.
• Number of facilities considered for water audit. 
• Number of water input/output points.
• The sector the industry/business entity falls under.
• Sector-specific compliance requirements (e.g., ZLD norms, effluent monitoring).
• Level of automation, sub-metering, and data availability.
• Requirement for baseline studies and benchmarking.

DQS India brings global pedigree, audit expertise, and a deep understanding of India’s regulatory landscape to every water audit engagement. Our audits are conducted in accordance with ISO 46001, CGWA guidelines, CPCB discharge norms, and the 3M-7R approach as outlined in the NITI Aayog’s manual for water neutrality.