Garden hose: Difference between revisions

In 2014, it was reported that use of common garden hoses in combination with spray nozzles may generate aerosols containing droplets smaller than 10 μm, which can be inhaled by nearby people. Water stagnating in a hose between uses, especially when warmed by the sun, can host the growth and interaction of ''[[Legionella]]'' and free-living [[amoebae]] (FLA) as [[biofilm]]s on the inner surface of the hose. Clinical cases of [[Legionnaires' disease]] or Pontiac fever have been found to be associated with inhalation of garden hose aerosols containing ''Legionella'' bacteria. The report provided measured microbial densities resulting from controlled hose conditions in order to quantify the human health risks. The densities of ''Legionella spp.'' identified in two types of hoses were found to be similar to those reported during legionellosis outbreaks from other causes. It was proposed that the risk could be mitigated by draining hoses after use.<ref name="ThomasThomas2014">{{cite journal |last1=Thomas |first1=Jacqueline M. |last2=Thomas |first2=Torsten |last3=Stuetz |first3=Richard M. |last4=Ashbolt |first4=Nicholas J. |title=Your Garden Hose: A Potential Health Risk Due to Legionella spp. Growth Facilitated by Free-Living Amoebae |journal=Environmental Science & Technology |volume=48 |issue=17 |year=2014 |pages=10456–10464 |issn=0013-936X |doi=10.1021/es502652n|pmid=25075763 |bibcode=2014EnST...4810456T }}</ref>