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    221310 - Water Supply and Irrigation Systems

    Water is the essence of life and a critical resource for numerous sectors. Understanding how water reaches our homes, farms, and industries is key to appreciating its management and delivery. That's where NAICS Code 221310 - Water Supply and Irrigation Systems comes in. This industry classification plays a vital role in managing water supply infrastructure, ensuring reliable access to clean water for residential, commercial, agricultural, and industrial uses.

    What is NAICS Code 221310?

    NAICS Code 221310 covers establishments primarily engaged in operating water supply systems and irrigation systems. These entities manage infrastructure and services that provide water to various consumers—supporting everyday needs, crop irrigation, manufacturing processes, and more.

    Sector: Utilities

    This industry falls within the Utilities sector, which encompasses organizations responsible for providing essential services such as electricity, natural gas, water, and sewage treatment.

    Key Business Activities Under NAICS Code 221310

    Businesses classified under NAICS 221310 are involved in a variety of water-related operations including:

    • Operating municipal and private water supply systems
    • Managing irrigation water supply services
    • Running water distribution systems for both irrigation and general consumption
    • Operating water filtration and treatment plants
    • Managing impounding reservoirs for irrigation purposes
    • Overseeing canals and irrigation systems

    These activities ensure efficient storage, treatment, and delivery of water through complex infrastructure tailored to the needs of diverse customers.

    Size Standards for NAICS Code 221310

    To qualify as a small business under this code, a company must have an average annual revenue of $41 million or less. This size standard is crucial for government contracting and eligibility for various assistance programs.

    Examples of Businesses Under NAICS 221310

    Typical establishments include:

    • Municipal water supply utilities providing drinking water to communities
    • Private irrigation firms servicing agricultural lands
    • Companies operating water treatment and filtration plants
    • Water distribution system operators for industrial parks or commercial complexes

    Detailed Code Elements for NAICS 221310

    Code Details Description
    Canal, irrigation Construction and operation of irrigation canals
    Filtration plant, water Water filtration plant operations
    Impounding reservoirs, irrigation Management of reservoirs storing irrigation water
    Irrigation system operation Operating irrigation infrastructure
    Water distribution (except irrigation) Distribution of water for residential/commercial
    Water distribution for irrigation Water delivery specifically for irrigation
    Water filtration plant operation Treatment of water via filtration process
    Water supply systems Management of water supply infrastructure
    Water treatment and distribution Processing and distributing potable water
    Water treatment plants Facilities designed for water purification

    Frequently Asked Questions (FAQs)

    What is NAICS code 221310 used for?

    NAICS code 221310 classifies businesses engaged in running water supply and irrigation systems, essential for delivering treated water to various sectors.

    Which businesses fall under NAICS 221310?

    Municipal water providers, irrigation system operators, and companies managing water treatment plants typically fall under this category.

    What is the size standard for NAICS code 221310?

    The SBA size standard for small businesses under NAICS 221310 is $41 million in average annual receipts.

    How does NAICS 221310 relate to government contracting?

    Businesses classified under this code can qualify for targeted federal contracts related to water infrastructure projects and maintenance.

    Are irrigation system operators included in this NAICS code?

    Yes, irrigation system operation is a key component of NAICS 221310.


    Understanding NAICS code 221310 is vital for businesses involved in water supply management and irrigation systems, especially those looking to engage with government contracts or market their services effectively. Water is indispensable, and so is the industry ensuring it flows seamlessly to where it’s needed most.