New Delhi, March 21 -- Businesses across the country have five months to adopt stricter norms to reduce their environmental impact, by crafting clear policies, setting sustainability goals, and adopting eco-friendly practices in daily operations.

The Bureau of Indian Standards (BIS) has tightened standards for so-called environmental management systems (EMS), internal company systems to minimize impact and improve performance on the environmental front. BIS certifies these systems, underscoring their commitment to the environment, reducing costs, and enhancing reputation.

BIS has mandated all businesses to adopt the new EMS norms by 21 August, two government officials said, requiring companies to take measurable steps to reduce their en...