Possible NAICS Codes
221320 – Sewage Treatment Facilities
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
562991 – Septic Tank and Related Services
236220 – Commercial and Institutional Building Construction
562910 – Remediation Services
221310 – Water Supply and Irrigation Systems
237110 – Water and Sewer Line and Related Structures Construction
562119 – Other Waste Collection
238220 – Plumbing, Heating, and Air-Conditioning Contractors
562111 – Solid Waste Collection