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The proposed permanent Protection Against Legionella regulation will require all Legionella culture analyses to be performed by a laboratory that is approved to perform such analyses by the New York State Environmental Laboratory Approval Program (ELAP).  This proposed regulation was presented to the Public Health and Health Planning Council on April 14, 2016, and published in the State Register on April 20, 2016, for a 45-day public comment period. 

Beginning June 1, 2016, application materials will be available for labs to apply for ELAP certification for Legionella culture analysis.  Any laboratories currently performing Legionella culture analysis on samples originating from New York State will need to submit an application, including supporting documentation (standard operating procedure and demonstration of capability), by Wednesday, June 29, 2016.  For purposes of compliance with the Legionella regulations, any laboratory that is currently performing Legionella testing and that has submitted a timely application for certification, will be granted interim approval until the application is fully processed by ELAP.

Certification for Legionella culture analysis will be offered in the category of Non-Potable Water using International Standard Method 11731 Water quality-detection and enumeration of Legionella (ISO 11731).  Please note that applicants will be required to submit proficiency testing (PT) results on samples from any of the NELAC/A2LA accredited providers.  Applicants must demonstrate passing scores in at least two (2) of three (3) consecutive proficiency tests performed at least fifteen (15) days apart.  A list of NELAC/A2LA accredited PT providers can be found here. In addition, your laboratory will be required to have an on-site assessment performed prior to certification being granted.

Questions on certification for Legionella culture analysis can be sent to

Legionella Frequently Asked Questions