- Warehousing & Storage, Port Washington - Warehouse Services
- Waste & Refuse Services & Sites, Port Washington
- Watch, Clock & Jewelry Repair, Port Washington
- Water Transportation, Except Passenger, Port Washington
- Wedding & Bridal Services, Port Washington
- Wedding Ceremony Locations & Wedding Venues, Port Washington
- Wedding Gown Cleaning, Port Washington
- Wedding Gown Preservation, Port Washington
- Wedding Supplies & Bridal Shops, Port Washington
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- Welding & Welder, Port Washington - Welding Supplies, Machines, Equipment, Services & Contractors
- Well Drilling Consultants, Port Washington
- Well Drilling Contractors, Port Washington
- Will And Trust Attorneys & Lawyers, Port Washington
- Windows and Doors, Port Washington - Wholesale, Manufacturers & Suppliers
- Wine Manufacturers, Port Washington
- Wireless & Cellular Communications Equipment & Supplies, Port Washington
- Woodworking Contractors, Port Washington - Carpentry Contractors
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