- Economic Development, Walkerton
- Education, Walkerton
- Education & Information Services, Walkerton
- Electric Companies, Walkerton
- Electric Motors & Generators , Walkerton
- Electrical Control Systems & Materials, Walkerton
- Electricians, Walkerton - Electrical Contractors
- Electronics Repair & Maintenance , Walkerton
- Electronics Stores, Walkerton
- Elementary Schools, Walkerton
- Emergency Services, Walkerton
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- Employment Agencies, Walkerton - Staffing Agencies
- Employment Assistance, Walkerton
- Engine Rebuild, Repair & Exchange, Walkerton
- Engineer & Architect Services, Walkerton - Engineering & Architecture Service
- Entertainment & Recreation, Walkerton
- Environmental Conservation & Ecological Services, Walkerton - Ecosystem Services
- Environmental Groups, Walkerton
- Environmental Products, Walkerton
- Environmental Services, Walkerton
- European Cuisine, Walkerton
- Excavation Contractors, Walkerton - Excavating - Excavator Companies
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