PSC Y1NE

Overview

The Product Service Code (PSC) system is the government-wide taxonomy used to classify products and services procured by the U.S. federal government in FPDS and related acquisition systems. The PSC Manual on Acquisition.gov is the authoritative maintenance and publication source for PSC codes and title assignments.¹

PSC code Y1NE — Construction of Water Supply Facilities — is the official PSC label used to identify construction procurements for water-supply infrastructure in federal contracting records. Agencies assign this PSC when the primary deliverable is construction of water-supply facilities per the Manual’s coding scheme.¹

• See also on G2X:
  • G2X — PSC Y1NE overview
  • G2X — PSC Z1NE (Maintenance of Water Supply Facilities)
  • G2X — NAICS 237110

What this PSC covers

• Intake and raw-water intake structures
• Water-treatment plant construction
• Pumping stations and river/stream pump installations
• Transmission mains and major distribution mains
• Reservoirs, water-storage tanks, and elevated tanks
• Drilled water wells and well-field development
• Site work and ancillary civil works for water-supply projects

Specific, itemized inclusions and exclusions for Y1NE are not detailed in the PSC Manual; agencies apply the code consistent with the Manual’s titles and category guidance.¹

Related NAICS and PSC codes

Not all PSC-to-NAICS crosswalks are published as single definitive mappings in the Manual; authoritative crosswalk and category-alignment files are published as attachments and archives on Acquisition.gov for reference and analysis.²

Usage notes for capture and business-development professionals

• Award classification: Solicitations and awards that primarily procure construction of water-supply infrastructure commonly show the PSC title for Y1NE in award metadata; contracting officers select the PSC that best describes the principal purpose of the procurement as recorded in FPDS.¹
• Vehicle and NAICS context: Many water-supply construction actions use construction-centric NAICS; solicitations commonly pair these projects with water-and-sewer line construction codes (often reported under NAICS 237110), but definitive mappings should be checked against the official NAICS description and the PSC Category Alignment files.³
• Maintenance vs. construction: Construction actions are coded with Y-series PSCs (for example, Y1NE), while recurring repair, alteration, and maintenance are coded with the parallel Z-series (for example, Z1NE); the Manual separates construction (Y) from maintenance/repair (Z).¹

Frequently asked questions

• Q: What is the authoritative source for PSC definitions and the Y1NE entry?
  A: The PSC Manual published on Acquisition.gov is the authoritative source for PSC definitions and code titles; the Manual and its current spreadsheets list Y1NE as "Construction of Water Supply Facilities."¹

• Q: Which NAICS code commonly corresponds to Y1NE for most water-supply construction procurements?
  A: Solicitations often use water-and-sewer line construction NAICS; practitioners commonly see NAICS 237110 referenced for such projects, but the Manual does not mandate a single NAICS—check the NAICS definition and PSC category-alignment files for confirmation.³

• Q: Should maintenance work on an existing water plant use Y1NE or a different PSC?
  A: Routine maintenance, repair, and alteration of water-supply facilities are coded in the Z-series (maintenance) PSCs such as Z1NE; new construction or major new-construction projects are coded in the Y-series. Consult the Manual for category distinctions.¹

• Q: Where can I find official PSC-to-category guidance used for spend analysis and alignment?
  A: Use the Acquisition.gov PSC Manual pages and the archived Category Alignment attachments published there; those files contain government-published alignment tables and guidance for reporting and category management.²

Useful resources

• G2X — PSC Y1NE: https://app.g2xchange.com/psc/Y1NE
• Product and Service Code Manual (Acquisition.gov): https://www.acquisition.gov/content/psc-april-2025.xlsx
• PSC Manual archive and Category Alignment (Acquisition.gov): https://www.acquisition.gov/psc-manual/archives?page=1
• NAICS — NAICS code 237110 (U.S. Census Bureau): https://www.census.gov/naics/?code=237110

References

1. Acquisition.gov — Product and Service Code Manual (PSC April 2025 spreadsheet and current Manual listing): https://www.acquisition.gov/content/psc-april-2025.xlsx
2. Acquisition.gov — PSC Manual archive and Category Alignment listings: https://www.acquisition.gov/psc-manual/archives?page=1
3. U.S. Census Bureau — NAICS code 237110 (Water and Sewer Line and Related Structures Construction): https://www.census.gov/naics/?code=237110