Preventivo in 24 ore · Tecnici certificati su tutto il territorio nazionale
Preventivo in 24 ore
English summary of the Italian and EU regulatory framework for Legionella prevention. Each entry includes the reference, effective date, scope and practical implications for facility managers, researchers and international compliance officers.
Curated for international researchers, compliance professionals and journalists. Full Italian texts are available on the Italian regulations page.
State-Regions Agreement — Rep. Atti 79/CSR · 7 May 2015
The principal Italian reference for Legionella risk management. Defines risk assessment criteria, sampling frequencies, action thresholds (1,000 CFU/L and 10,000 CFU/L), corrective measures and documentation requirements for hotels, healthcare facilities, residential buildings, gyms and industrial cooling towers.
Legislative Decree 81/2008 — Title X · 9 April 2008
Title X classifies Legionella pneumophila as a Group 2 biological agent. Employers operating water systems (including cooling towers and whirlpools) are required to carry out a biological risk assessment, implement technical and organisational prevention measures and maintain relevant documentation.
Legislative Decree 18/2023 · 23 February 2023
Transposes EU Directive 2020/2184 on the quality of water intended for human consumption. Introduces domestic distribution risk assessments (premises risk assessment) covering large buildings such as hotels, hospitals and multi-unit residential blocks, with specific reference to Legionella.
EU Directive 2020/2184 (Drinking Water Directive recast) · 16 December 2020
Recasts Directive 98/83/EC. Introduces a risk-based approach to water safety (Water Safety Plans), requires Member States to assess priority substances and pathogens including Legionella, and mandates premises risk assessments for priority premises accessible to the public.
UNI EN ISO 11731:2017 · 2017
International standard specifying the culture method for the detection, enumeration and confirmation of Legionella in water samples (BCYE selective agar, incubation at 36 ± 1 °C for 7–10 days). Mandatory reference method for all Italian accredited laboratories reporting Legionella results.
UNI CEI EN ISO/IEC 17025:2018 · 2018
Establishes competence requirements for testing and calibration laboratories. In Italy, ACCREDIA accreditation to ISO/IEC 17025 is required for laboratories whose Legionella results are used for regulatory compliance purposes.
Ministry of Health Circular — DGPREV/IV/5960 · 5 June 2000
First national reference document on Legionella prevention in healthcare and non-healthcare settings. Superseded in full by the 2015 State-Regions Agreement for technical requirements, but remains a historical reference cited in case-law and audit trails.
ECDC ELDSNet — European Legionnaires' Disease Surveillance Network · ongoing
European surveillance framework for travel-associated Legionnaires' disease (TALD). Italian hospitality and healthcare facilities notified through ELDSNet are subject to investigation and corrective-action reporting within defined timelines. The Italian National Institute of Health (ISS) manages Italian participation.
Note: This page provides an informational summary for international audiences. For binding legal purposes always refer to the official Italian text published in the Gazzetta Ufficiale della Repubblica Italiana or in the Official Journal of the European Union. For the full Italian-language analysis see Normative Legionella (IT).
Quick answers for compliance officers, academics and international journalists.
The State-Regions Agreement of 7 May 2015 (Rep. Atti 79/CSR) is the primary national reference. It defines risk assessment criteria, sampling frequencies, action thresholds (1,000 and 10,000 CFU/L), corrective measures and documentation for all facility types.
Yes. EU Directive 2020/2184 (transposed into Italian law by Legislative Decree 18/2023) requires premises risk assessments for priority premises accessible to the public — which includes hotels, hospitals and large residential buildings. Legionella is explicitly listed as a parameter to be assessed.
In Italy, Legionella analyses must be performed by an ACCREDIA-accredited laboratory using UNI EN ISO 11731:2017 (culture method). Results from non-accredited laboratories or non-standard methods are not accepted for regulatory compliance purposes.
Notification through ELDSNet is triggered when a confirmed or probable case of travel-associated Legionnaires' disease is linked to a specific accommodation or healthcare facility in Italy. The facility is then subject to investigation and must report corrective actions to the competent local health authority (ASL) and the ISS within defined deadlines.