Ecolab’s campus in Naperville, Ill., which serves as the home of the company’s Nalco Water business and includes more than 700,000 square feet of office and laboratory space, has received Leadership in Energy & Environmental Design (LEED) Gold recertification from the U.S. Green Building Council (USGBC).

LEED is the most widely used green building rating system in the world. It recognizes best-in-class building strategies and practices that have a positive impact on the health of building occupants and the environment.

“LEED certification is a globally recognized symbol of sustainability achievement and leadership,” said Darrell Brown, Ecolab executive vice president and president, Global Industrial. “We are proud to receive this recognition for our ongoing commitment to sustainability in our own facilities, just as we are proud to help our customers operate sustainably in theirs.”

Ecolab’s 76-acre Naperville campus received its first LEED Gold certification in 2010 and was first recertified in 2015. To achieve LEED Gold recertification, the campus demonstrated continuous improvements in energy use, indoor air quality, water use and waste reduction.