Table 1.

Sampling procedures for P. aeruginosa and L.pneumophila in premise pluming in different protocols and studies

		P. aeruginosa			L. pneumophila
		Device	Doc Type	Ref	Device	Doc Type	Ref
Flow regime	First draw	Taps	Best practice guidance	(Health; and facilities, 2013)	Taps/Showers/Water heaters	Study Protocol	(Martinelli et al., 2000) (Scotland, 2011)
	Brief period of flow (eliminate cold water)				Taps	Study	(Borella et al., 2004)
	1 min flow				Taps/Showers	Study	(Bargellini et al., 2011)
	2 min flow	Taps (post-flush)	Best practice guidance	(Health; and facilities, 2013)	Faucets	Protocols	(Barbaree et al., 1987; Scotland, 2011)
	Temperature at equilibrium					Study	(Flannery et al., 2006; Moore et al., 2006)
Volume of sample (mL)	100	Faucets	Studies	(Lavenir et al., 2008; Trautmann et al., 2001; van der Mee-Marquet et al., 2005)	Taps	Study	(Zhang et al., 2009)
	250	Faucets	Studies	(Berthelot et al., 2006; Rogues et al., 2007)
	500	Faucets	Studies Protocol	(Halabi et al., 2001) (Scotland, 2011)
	1000				General potable water system Residential taps/showers	Protocols Study	(Barbaree et al., 1987; Scotland, 2011) (Flannery et al., 2006; Mathys et al., 2008; Moore et al., 2006)
	1000 – 2000					Standards	((APHA), 2012; (ISO), 2004)
					Showers/Taps	Study	(Borella et al., 2004)
	10,000				Incoming water	Protocol	(Barbaree et al., 1987)