- Paper & Cardboard Manufacturers, Waterville
- Paper Finishers Manufacturers, Waterville
- Passenger Vehicle Dealers, Waterville
- Paving Contractors - Driveway, Road, Walkway, Waterville - Installation, Repair & Seal - Asphalt & Concrete Pavers
- Personal Care, Waterville
- Personal Credit Institutions & Services, Waterville
- Personal Legal Services, Waterville
- Personal Services, Waterville
- Pet Care Services, Waterville
- Pet Grooming & Boarding Services, Waterville
- Pharmacy & Drug Stores, Waterville - Drugstore - Chemists
- Physical Therapists, Waterville - Physical Therapy
- Plastic Bags - Retail, Waterville
|
- Plastic Mold Manufacturers, Waterville
- Plastic Molds & Plastic Processing, Waterville
- Plastic Products Manufacturers, Waterville
- Playgrounds Parks & Trails, Waterville
- Plumbers & Plumbing Contractors, Waterville - Installation, Repair & Replace Services
- Plumbing - Sewer & Drain Cleaning & Repair, Waterville
- Private Schools Secondary Schools, Waterville
- Product Rental & Leasing, Waterville
- Product Repair Services, Waterville
- Professional, Waterville
- Propane & Natural Gas, Waterville
- Public Libraries, Waterville
|
