The Central Pollution Control Board (CPCB) has issued a landmark notification revising ambient air quality standards and stack emission limits for major industrial categories across India. The new standards represent a significant tightening of permissible limits and are effective from June 30, 2025.

This revision comes after a comprehensive review of industrial emission data collected over the past three years and is aligned with India's commitments under the Paris Agreement and National Clean Air Programme (NCAP) targets of reducing particulate matter concentrations by 40% by 2026.

Key Changes in Emission Standards

• Particulate Matter (PM10) limits reduced by 20% for thermal power plants — from 50 mg/Nm³ to 40 mg/Nm³
• PM2.5 standards introduced for the first time for cement and steel industries
• Sulphur Dioxide (SO2) emission limits tightened by 25% for chemical manufacturing
• Nitrogen Oxide (NOx) standards revised for all combustion-based industries
• Continuous Emission Monitoring Systems (CEMS) made mandatory for all industries with stack height above 30 metres
• Real-time data transmission to CPCB's OCEMS portal compulsory from July 2025

Industries Affected

The revised standards apply broadly to:

• Thermal power plants and captive power plants above 50 MW
• Cement manufacturing plants
• Integrated steel and iron plants
• Chemical and petrochemical industries
• Fertiliser manufacturing units
• Pulp and paper mills
• All other large-scale manufacturing with significant stack emissions

CEMS Installation Requirements

CPCB has specified technical requirements for Continuous Emission Monitoring Systems that must be installed by industries falling under the revised notification:

• CEMS must be capable of measuring PM, SO2, NOx, CO, and O2 in real-time
• Data logger with minimum 15-minute averaging intervals
• Automated data transmission to CPCB's central server
• Annual calibration by NABL accredited laboratory mandatory
• Backup power supply for uninterrupted monitoring

Penalties for Non-Compliance

Industries failing to meet the revised standards or install CEMS by the deadline will face:

• Show cause notices under Air and Water Acts
• Environmental compensation as per NGT guidelines
• Closure direction for repeat violators
• Public disclosure of non-compliant units on CPCB website

The Ministry of Environment, Forest and Climate Change (MoEFCC) has issued a directive making the PARIVESH (Pro-Active and Responsive facilitation by Interactive, Virtuous and Environmental Single-window Hub) portal the sole channel for submitting forest clearance applications under the Forest Conservation Act, 1980.

What Has Changed

• All Stage I and Stage II forest clearance applications must be submitted exclusively online through PARIVESH portal
• Physical/offline applications will not be accepted from May 1, 2025 onwards
• Project proponents must register on PARIVESH before submitting applications
• Digital signatures mandatory for all documents and forms
• Real-time application tracking available to applicants and nodal officers

Benefits of Digitisation

The digitisation initiative aims to bring transparency and accountability to the forest clearance process. Key benefits include faster processing, reduced paperwork, real-time tracking, and elimination of manual delays at various stages of approval.

Documents to be Uploaded

• Project report with forest land diversion details
• GPS-based demarcation of forest area to be diverted
• Compensatory afforestation plan with land identification
• Wildlife survey reports if applicable
• Gram Sabha resolution for projects in Schedule V areas

The Ministry of Environment has notified the E-Waste Management Rules 2025 replacing the earlier 2022 rules. The new rules significantly expand the scope of Extended Producer Responsibility (EPR) and introduce stricter collection targets.

Major Changes

• EPR targets increased to 70% collection efficiency by 2026
• New categories of electrical and electronic equipment added including LED lights and solar panels
• Mandatory EPR registration for all producers, importers and brand owners
• Penalty for non-compliance increased to ₹1 lakh per tonne of uncollected waste
• Informal recyclers to be integrated into formal recycling system
• Producer Responsibility Organisations (PROs) to be registered with CPCB

Who is Affected

All manufacturers, importers, and brand owners dealing in electrical and electronic equipment are required to comply with the new EPR obligations. This includes consumer electronics, IT equipment, telecom equipment, and large and small household appliances.

The Securities and Exchange Board of India (SEBI) has expanded the Business Responsibility and Sustainability Reporting (BRSR) mandate to include the top 2000 listed companies by market capitalisation, effective from FY 2025-26.

Key Requirements

• BRSR Core disclosures mandatory for top 2000 listed companies
• Supply chain ESG disclosures required for top 250 companies
• Third-party assurance of BRSR Core data mandatory
• New KPIs added for water consumption intensity and waste generation
• Transition plan disclosure for climate-related risks required

New ESG Parameters

SEBI has added several new environmental parameters that must be disclosed in BRSR including water withdrawal by source, wastewater treatment and reuse data, detailed waste generation and disposal by category, and Scope 3 emission categories relevant to the business.

The National Green Tribunal has directed all Red Category industries located within 500 metres of rivers, lakes, or other water bodies to conduct mandatory groundwater quality audits and submit reports to respective State Pollution Control Boards within 90 days.

NGT Directions

• Groundwater monitoring at minimum 4 locations around the industry boundary
• Testing for heavy metals, TDS, pH, COD, BOD and industry-specific parameters
• Audit report to be submitted to SPCB within 90 days of this order
• Remediation plan required if contamination is detected
• Quarterly monitoring thereafter for 2 years

India has submitted its updated Nationally Determined Contribution (NDC) to the United Nations Framework Convention on Climate Change, committing to reduce the emissions intensity of its GDP by 45% by 2030 compared to 2005 levels and achieve net zero emissions by 2070.

Key Commitments

• 45% reduction in GDP emission intensity by 2030 (vs 2005 baseline)
• 50% cumulative electric power from non-fossil fuel sources by 2030
• Create additional carbon sink of 2.5-3 billion tonnes through forests and tree cover
• Net zero emissions target by 2070

Implications for Industries

These commitments will drive mandatory carbon reporting requirements, energy efficiency norms, and renewable energy obligations for Indian businesses across all sectors. Industries are advised to begin GHG inventory preparation and carbon reduction planning immediately.

MoEFCC has streamlined the environment clearance process for solar and wind energy projects, reducing the maximum processing timeline from 105 days to 60 days. This initiative aims to accelerate India's renewable energy capacity addition towards the 500 GW target by 2030.

Key Changes

• Single window clearance for solar projects up to 50 MW capacity
• Deemed approval if SEAC/MoEFCC does not respond within 60 days
• Simplified ToR (Terms of Reference) for greenfield solar parks
• Online submission through PARIVESH portal mandatory
• No public consultation required for solar projects below 20 MW

The Haryana State Pollution Control Board has issued show cause notices to 150 industrial units across Gurugram, Faridabad, Sonipat, and Panipat districts for multiple violations of consent conditions and environmental regulations.

Common Violations Found

• Expired CTO not renewed despite multiple reminders from SPCB
• Online Continuous Effluent Monitoring System (OCEMS) not installed
• Stack emission monitoring records not maintained for past 6 months
• Hazardous waste not disposed through CPCB-authorised channels
• Annual environment audit report not submitted to SPCB
• Ambient air quality monitoring data not uploaded to SPCB portal

Next Steps for Affected Units

Industries that have received show cause notices must submit a detailed compliance response within 21 days. Failure to respond or non-compliance may result in closure orders and environmental compensation proceedings.

CPCB has issued binding directions making Zero Liquid Discharge (ZLD) mandatory for all sugar mills with crushing capacity above 2500 Tonnes of Cane per Day (TCD). The directive follows findings of widespread discharge of untreated effluent from sugar mills into rivers and agricultural land across Uttar Pradesh, Maharashtra, and Karnataka.

Key Requirements

• ZLD system to be operational by March 31, 2026
• Online effluent quality monitoring to be installed by June 30, 2025
• Monthly compliance reports to be submitted to respective SPCB
• Third-party audit of ZLD system annually by NABET accredited auditor
• Treated water to be reused in process or for irrigation

The government has amended compensatory afforestation requirements under the Forest Conservation Act. Projects diverting forest land must now plant trees on double the area of diverted land in non-forest areas, up from the earlier 1:1 ratio.

New Requirements

• 2:1 compensatory afforestation ratio for all new forest diversions
• Plantation to be completed before Stage II clearance is granted
• GPS-tagged plantation with geo-referenced monitoring mandatory
• 5-year maintenance and survival guarantee from project proponent
• Annual survival count to be submitted to DFO

CPCB has issued comprehensive guidelines making annual third-party environment audits mandatory for all Red Category industries. The audit reports must be submitted to respective SPCBs before September 30 each year.

Audit Coverage

• Air emissions — stack and fugitive
• Effluent quality and treatment plant performance
• Hazardous and solid waste management
• Noise levels inside and outside factory
• Consent condition compliance status
• Online monitoring system functioning

Auditor Qualifications

The environment audit must be conducted by a QCI-NABET accredited environment auditor. Self-certification or internal audits will not be accepted by SPCBs.

The Ministry of Environment has notified amendments to the Plastic Waste Management Rules imposing higher Extended Producer Responsibility obligations on plastic producers, importers, and brand owners.

Key Changes

• EPR targets for plastic packaging increased to 50% by 2025-26
• Single-use plastic ban extended to additional categories including plastic sticks for balloons
• Compostable plastics must be certified by CPCB before use
• Plastic credit trading platform launched for EPR compliance
• Penalty for non-registration on EPR portal: ₹50,000 per month

CPCB has revised effluent treatment plant discharge standards for chemical manufacturing industries. The new COD and BOD limits are significantly stricter than existing norms and are effective from July 1, 2025.

Revised Discharge Limits

• COD (Chemical Oxygen Demand) limit reduced from 250 mg/L to 150 mg/L
• BOD (Biochemical Oxygen Demand) limit reduced from 30 mg/L to 20 mg/L
• Total Nitrogen limit of 10 mg/L introduced for first time
• Total Phosphorus limit of 2 mg/L introduced
• pH range tightened from 5.5-9.0 to 6.5-8.5

Compliance Steps for Chemical Industries

• Conduct immediate effluent quality baseline assessment
• Upgrade ETP with tertiary treatment if required
• Install online effluent quality monitoring by June 2025
• Submit revised consent application with new ETP design to SPCB