Table 1.

Detection rates (n) for SARS-CoV-2, enteroviruses (EV), norovirus GI and GII (NoVGI, NoVGII), influenza A virus (Flu A), respiratory syncytial virus (RSV), crAssphage, and Phi6 phage process control virus in wastewater samples using the NMP and the PEG methods for concentration.

Method	SARS-CoV-2	EV	NoVGI	NoVGII	FluA	RSV	CrAssphage	Phi6
NMP	98% (41)	14% (42)	98% (42)	100% (42)	26% (42)	0% (42)	100% (42)	100% (41)
PEG—low sample volume	92% (36)	26% (38)	95% (38)	100% (38)	29% (38)	0% (38)	100% (32)	100% (32)
PEG—high sample volume	100% (42)	17% (42)	100% (42)	100% (42)	62% (42)	7% (42)	100% (42)	100% (42)