NAICS 221310 - Water Supply and Irrigation Systems

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What is NAICS 221310

NAICS code 221310 covers establishments primarily engaged in operating water supply and irrigation systems, including water treatment plants, pumping stations, aqueducts, and distribution mains. Businesses in this sector ensure the delivery of potable water for drinking, agricultural irrigation, and other municipal or industrial uses. Operators maintain infrastructure that supports water quality and reliable distribution to meet community and environmental standards. Government agencies contract these services to maintain public health, support agriculture, and manage natural resources effectively. This sector is critical for sustaining urban and rural water needs, making it an essential component of public infrastructure.

Industry Classification for NAICS 221310

This industry comprises establishments primarily engaged in operating water treatment plants and/or operating water supply systems. The water supply system may include pumping stations, aqueducts, and/or distribution mains. The water may be used for drinking, irrigation, or other uses.

Breakdown for NAICS 221310

  • Industry includes operation of water treatment plants and water supply systems.
  • Covers infrastructure such as pumping stations, aqueducts, and distribution mains.
  • Supports water usage for drinking, irrigation, and other municipal or industrial purposes.
  • Includes both public and private entities operating water delivery systems.
  • Subject to federal, state, and local environmental and safety regulations.

Included Activities for NAICS 221310

  • Operating water treatment plants to ensure potable water quality.
  • Managing pumping stations and aqueducts for water distribution.
  • Maintaining and repairing water supply pipelines and mains.
  • Monitoring water quality and compliance with regulatory standards.
  • Performing irrigation system operations and maintenance.
  • Coordinating water resource allocation for agricultural use.
  • Upgrading water infrastructure to improve efficiency and sustainability.
  • Responding to emergency repairs and system outages.

Business Types for NAICS 221310

  • Municipal water authorities and utilities
  • Private water supply and irrigation operators
  • Environmental and water resource management firms
  • Engineering and infrastructure maintenance contractors
  • Agricultural irrigation service providers

Subcategories for NAICS 221310

  • Canal, irrigation
  • Filtration plant, water
  • Impounding reservoirs, irrigation
  • Irrigation system operation
  • Water distribution (except irrigation)
  • Water distribution for irrigation
  • Water filtration plant operation
  • Water supply systems
  • Water treatment and distribution
  • Water treatment plants

Government Buyers for NAICS 221310

Government agencies such as municipal water authorities, state environmental departments, the U.S. Army Corps of Engineers, and the Bureau of Reclamation commonly procure services under NAICS 221310. These agencies require contracts to operate, manage, and upgrade water treatment and supply systems to comply with regulatory standards and support public water access. Additionally, federal projects focused on irrigation infrastructure to support agriculture often contract these services to enhance water distribution efficiency and sustainability in farming regions.

Contract Types & Procurement for NAICS 221310

Contracts for NAICS 221310 services typically include firm-fixed-price, cost-reimbursement, and indefinite-delivery/indefinite-quantity (IDIQ) contracts. Procurement methods often involve competitive bidding, request for proposals (RFPs), and simplified acquisitions, depending on project scale and urgency. Typical contract values range widely from small maintenance contracts under $100,000 to multimillion-dollar agreements for large-scale treatment plant operations or infrastructure modernization. Long-term service agreements are common, ensuring continuous operation and compliance with water quality standards.

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