When and where is WEFTEC 2027?

September 25-29, 2027 in Chicago, Illinois.

What is special about WEFTEC 2027?

It marks the Water Environment Federation's 100th anniversary, with Jammin'4Water on September 25, a Centennial Gala on September 26 and the Operations Challenge's 40th anniversary.

Water quality and wastewater professionals, utility managers, engineers, researchers, regulators and technology providers.

WEFTEC 2027 - atndr

Name: WEFTEC 2027
Start: 2027-09-25T09:00:00+00:00
End: 2027-09-29T17:00:00+00:00
Location: McCormick Place

About this event

WEFTEC is the Water Environment Federation's annual technical exhibition and conference, the largest water quality event in North America. The 2027 edition in Chicago is WEF's 100th anniversary meeting, pairing the technical programme and exhibition with centennial celebrations.

Who attends

Water and wastewater professionals from utilities, consulting engineering firms, government, academia and industry, along with equipment and technology suppliers. WEF reports that recent editions drew over 23,000 water professionals from more than 100 countries, and that about 70% of professional attendees influence purchasing.

Centennial celebrations

WEF has announced special events for the 100th anniversary edition.

Jammin'4Water (J4W) on Saturday evening, September 25, 2027
WEF Centennial Gala on Sunday evening, September 26, 2027
Operations Challenge 40th anniversary

Programme and exhibition

WEFTEC combines technical sessions, workshops and facility tours with a large exhibition of water technology. The 2026 edition listed 950+ exhibitors and 125+ technical sessions.

WEFTEC 2027 is an Energy & Environment event taking place 25-29 Sep 2027 at McCormick Place, Chicago, United States.