The Plumbing Authority

The Plumbing Authority is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Contractors Licensed
• Plumbers - Information & Referral Services

North American Industry Classification System (NAICS) Categories:

• All Other Specialty Trade Contractors
• All Other Business Support Services > Business Information & Referral Services > Plumbers - Information & Referral Services

Standard Industry Classification (SIC) Categories:

• Special Trade Contractors, Nec > Contractors Licensed
• Business Services, Nec > Business Information & Referral Services > Plumbers - Information & Referral Services