221310 – Water Supply and Irrigation Systems
238220 – Plumbing, Heating, and Air-Conditioning Contractors
Legionella Management:
541620 – Environmental Consulting Services
541380 – Testing Laboratories
541618 – Other Management Consulting Services
541310 – Architectural Services
541690 – Other Scientific and Technical Consulting Services
236220 – Commercial and Institutional Building Construction; Legionella Remediation
541330 – Engineering Services; Correct Legionella Deficiencies
Cross Connection Control:
541620 – Environmental Consulting Services
541690 – Other Scientific and Technical Consulting Services
541310 – Architectural Services
541330 – Engineering Services
611710 – Educational Support Services
624310 – Vocational Rehabilitation Services
561210 – Facilities Support Services
611430 – Professional and Management Development Training
924110 – Administration of Air and Water Resource and Solid Waste Management Programs
B533 – Special Studies/Analysis- Water Quality
F115 – Environmental Systems Protection –
Environmental Consulting and Legal Support
F103 – Environmental Systems Protection – Water Quality Support
B510 – Special Studies/Analysis – Environmental Assessments
6635 – Physical Properties Testing and Inspection
H246 – Equipment and Materials Testing- Water Purification and Sewage Treatment Equipment
H399 – Inspection- Miscellaneous
H146 – Quality Control- Water Purification and Sewage Treatment Equipment
U010 – Education/Training- Certifications/Accreditations for Educational Institutions
U006 – Education/Training- Vocational/Technical
AFI 32-1067 – Water Systems
AFI 32-1066 – Backflow Prevention Program
AFI 32-7041 – Water Quality Compliance
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