Table 1.

DNA yield from July sewage samples with and without storage at −20 °C for 1 week

Sample ID	Day extracted	Input volume	DNA yield (ng/μL)
S005_1_mL	Day of collection	1 mL	2.9
S005_10_mL	Day of collection	10 mL	35.0
S005_10_mL_frozen	After 7 days at −20 °C	10 mL	5.81
S006_1_mL	Day of collection	1 mL	3.56
S006_10_mL	Day of collection	10 mL	21.0
S006_10_mL_frozen	After 7 days at −20 °C	10 mL	9.8