== See also ==* Biocide* Environmental microbiology* European Working Group for Legionella Infections* Nosocomial infection== References ==LEGIONELLA and the prevention of legionellosis [http://www.who.int/water_sanitation_health/emerging/legionella.pdf]== External links ==* CDC Division of bacterial and Mycotic Diseases: Legionellosis* Directors of Health Promotion and Education page on Legionellosis* European Working Group for Legionella Infections* Legionnaires' disease outbreaks* Legionella Information* Legionella Risk management* Legionella case studies=== Maintenance guidelines ===* Centers for Disease Control and Prevention - Procedure for Cleaning Cooling Towers and Related Equipment (pages 239 and 240 of 249)* Cooling Technology Institute - Best Practices for Control of "Legionella"* California Energy Commission - Cooling Water Management Program Guidelines For Wet and Hybrid Cooling Towers at Power Plants* ASHRAE Guideline* Guidelines for Control of "Legionella" in Ornamental Fountains* Employers Guidelines for prevention of "Legionella"
* CDC Division of bacterial and Mycotic Diseases: Legionellosis* Directors of Health Promotion and Education page on Legionellosis* European Working Group for Legionella Infections* Legionnaires' disease outbreaks* Legionella Information* Legionella Risk management* Legionella case studies* Centers for Disease Control and Prevention — Procedure for Cleaning Cooling Towers and Related Equipment (pages 239 and 240 of 249)* Cooling Technology Institute — Best Practices for Control of "Legionella"* California Energy Commission — Cooling Water Management Program Guidelines For Wet and Hybrid Cooling Towers at Power Plants* ASHRAE Guideline* Guidelines for Control of "Legionella" in Ornamental Fountains* Employers Guidelines for prevention of "Legionella"