- Family Medicine & General Practice Doctors, Waterville - General Practitioner (GP), Physicians & Surgeons
- Farm Bureaus, Waterville
- Farm Equipment, Waterville
- Federal Government, Waterville
- Finance, Waterville
- Financial Institutions, Waterville
- Financial Services, Waterville
- Fishing Tackle, Equipment & Supplies Stores, Waterville - Lures, Rods, Reels, Baits, Poles & Fishing Gear
- Fitness, Waterville
- Fitness Centers, Waterville
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- Florists, Waterville - Flower Shops
- Flowers & Plants, Waterville
- Food & Beverage Stores & Services, Waterville
- Food & Beverages - Wholesale & Retail, Waterville
- Food Brokers & Manufacturing Agents, Waterville
- Fuel, Waterville
- Funeral Planning Services, Waterville
- Funeral Services, Crematory & Cemetery, Waterville - Funeral Homes & Directors
- Furniture Repair, Waterville
- Furniture Reupholstery & Repair, Waterville
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