National Waterworks

National Waterworks is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Air Conditioning Contractors
• Utility Location Services
• Water Treatment Systems Equipment Service & Supplies

North American Industry Classification System (NAICS) Categories:

• Electric Power Distribution > Energy Services > Utility Location Services
• Plumbing, Heating, And Air-Conditioning Contractors > Air Conditioning Contractors
• Plumbing And Heating Equipment And Supplies (Hydronics) Merchant Wholesalers > Water Filters & Purification Equipment > Water Softening & Conditioning Equipment
• All Other Business Support Services > Water Services > Water Treatment Service
• All Other Support Services > Water Services > Water Treatment Service

Standard Industry Classification (SIC) Categories:

• Plumbing, Heating And Air Conditioning > Air Conditioning Contractors
• Combination Utilities, Nec > Utility Locating Services
• Plumbing And Heating Equipment And Supplies (Hydronics) > Water Filters & Purification Equipment > Water Softening & Conditioning Equipment
• Business Services, Nec > Water Services > Water Treatment Service