Legionella environmental assessment form marking guide
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields



Publication Date Range:


Document Data


Document Type:






Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page


Legionella environmental assessment form marking guide

Filetype[PDF-429.04 KB]

  • English

  • Details:

    • Alternative Title:
    • Description:
      The Legionella Environmental Assessment Form Marking Guide (Marking Guide) is supplemental to the Legionella Environmental Assessment Form (LEAF). The LEAF Marking Guide walks the user through the LEAF by providing instructions and additional considerations for the questions. Additional considerations for questions provide further context and discuss relevant risk factors for Legionella growth and spread that users may find helpful. Using the LEAF Marking Guide will improve users’ understanding of a facility’s water systems and aerosolizing devices and assist facility management with minimizing the risk of Legionnaires’ disease. The LEAF and accompanying Marking Guide can be used along with epidemiologic information to determine whether to conduct Legionella environmental sampling and to inform a sampling plan. In addition, findings from the environmental assessment can be used to develop a water management program (WMP) by identifying areas at risk for Legionella growth or spread. The assessment should be performed on-site by an epidemiologist or an environmental health specialist with knowledge of the ecology of Legionella, building water systems, and water treatment. Public health professionals familiar with CDC resources such as the LEAF Marking Guide, Legionella Control Toolkit, and PreventLD have the appropriate knowledge to perform the environmental assessment and complete the LEAF.

      CS 328976-B


    • Main Document Checksum:
    • File Type:

    Supporting Files

    • No Additional Files

    More +



    You May Also Like

    Checkout today's featured content at stacks.cdc.gov