NAICS PSC rankings
Top PSC paths for NAICS 221310.
Use this ranking when the research starts with NAICS 221310 and you want the strongest service-code pages attached to Water Supply and Irrigation Systems before moving into deeper intersections.
NAICS PSC rankings
Top PSC paths
These NAICS-scoped rankings are useful when you want a cleaner entry point than the full code page and a faster pivot into geography or service-lane research.
PSC Y199
1 visible recipients · CONSTRUCT/MISC BLDGS
PSC Y245
1 visible recipients · CONSTRUCT/WATER SUPPLY
PSC Y111
1 visible recipients · CONSTRUCTION OF OFFICE BUILDINGS
PSC Y119
1 visible recipients · CONSTRUCT/OTHER ADMIN & SVCS BLDGS
PSC Y1EB
1 visible recipients · CONSTRUCTION OF MAINTENANCE BUILDINGS
PSC C211
1 visible recipients · ARCHITECT AND ENGINEERING- GENERAL: LANDSCAPING, INTERIOR LAYOUT, AND DESIGNING
PSC C219
1 visible recipients · ARCHITECT AND ENGINEERING- GENERAL: OTHER
PSC B510
1 visible recipients · SPECIAL STUDIES/ANALYSIS- ENVIRONMENTAL ASSESSMENTS
PSC T009
1 visible recipients · PHOTO/MAP/PRINT/PUBLICATION- AERIAL PHOTOGRAPHIC
PSC 6810
1 visible recipients · CHEMICALS
Other NAICS ranking views
Move around NAICS 221310
Use sibling ranking layers when you want to stay inside the same industry lane but switch between geography and service-code analysis.
Directory graph
Move into full directory hubs
Use the NAICS-specific ranking page as a shortcut, then move back into the broader NAICS, state, PSC, and top-list hubs when you want wider browse coverage.