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Home. The corporate EHS function, which oversees environmental, health and safety compliance began to merge at the management level around 1990. The first area is environmental management, which emerged as a profession in the 1970s, following the creation of the U.S. Environmental Protection Agency (EPA) and other state-level regulatory systems. As companies began limiting waste to prevent pollution, they needed engineers to adapt scrubbers, filters, and other process changes to existing manufacturing systems. Workplace safety and occupational health also grew in importance during this time, with the passage of legislation such as the Occupational Safety and Health Act of 1970. Over time, companies developed systematic way of complying with environmental, health and safety regulations. Corporations began tracking key measures and looking for ways to improve their performance. Then, in the 1990s, improvements in data technology management made it easier for an organization to analyze its operations. Around that time, corporations began to merge oversight for environmental, health and safety programs through a new management role called EHS. The newly appointed leaders, who began their careers in one of the three sub-disciplines, started to create systems to drive EHS progress across all operations. Today, with the advent of sustainability, EHS professionals are leading corporate efforts toward sustainability. Building on their decades of experience, EHS leaders are striving to meet this challenge, creating systems to reduce energy use, conserve water, and better communicate with stakeholders. Indeed, a 2009 survey found that two-thirds of the sustainability initiatives at member companies are being led or managed by the EHS