Table 2.

Studies that have detected the presence of SARS-CoV-2 in wastewater

Locale	Positive rate	Maximum concentration (RNA copies/L)	Reference
Queensland, Australia	20% (2/9)	1 × 102	Ahmed et al. (2020)
Paris, France	100% (23/23)	3 × 106	Wurtzer et al. (2020)
Milan, Italy	50% (6/12)	–	Rosa et al. (2020)
Monza, Italy	75% (3/4)	–	Rimoldi et al. (2020)
Murcia Region, Spain	11% (2/18)	1 × 105	Randazzo et al. (2020)
Istanbul, Turkey	100% (7/7)	2.8 × 105	Alpaslan Kocamemi et al. (2020)
Montana, USA	100% (7/7)	3 × 104	Nemudryi et al. (2020)
Massachusetts, USA	71% (10/14)	2 × 105	Wu et al. (2020a, b)