The Water Environment Federation (WEF) is an organization of engineers and industry experts related to wastewater, water, and water reuse. WEF members include specialists in the fields of:

• environmental engineering
• industrial wastewater treatment
• sewage treatment
• stormwater management
• water quality analysis and planning

Judith Herschell is presently:

• a member of WEF Membrane Committee
• a member of WEF International Committee