Water heating by a domestic water heater. Two conflicting safety issues affect water heater temperature—the risk of scalding from excessively hot water greater than , and the risk of incubating bacteria colonies, particularly "Legionella", in water that is not hot enough to kill them. Both risks are potentially life-threatening and are balanced by setting the water heater's thermostat to . The European Guidelines for Control and Prevention of Travel Associated Legionnaires’ Disease recommend that hot water should be stored at and distributed so that a temperature of at least and preferably is achieved within one minute at points of use. If there
Red thread disease high. Environment "Laetisaria fuciformis", the fungus that causes red thread disease develops more often in cool (59-77 °F) and wet conditions. These conditions are more present in the spring and fall when rainfall is higher and temperatures are slightly lower. Turf grass that is poor in nutrition and are slow growing are areas that are more susceptible to red thread disease. The fungus grows from the thread like red webbing structures called sclerotia. The sclerotia can survive in leaf blades, thatch, and soil for months to years. These areas that have been infected spread the disease by water, wind, and