Table 3.

Degradation rates for microbiological targets (hour ⁻¹) and Spearman coefficients (r) of study parameters (n = 24 grab samples per experiment, per parameter) over a 24-h time interval from wastewater samples at three distinct sewershed scales. Data for each parameter were transformed from gc/L or CFU/L into ln(C_t/C_o) and compared against time (hours). Rows in bold correspond to p<0.05 indicating that the target either increased or decreased significantly over time.

Experiment: Sewershed Scale	Degradation Rate (k)	Statistical Comparison: ln(Ct/Co) vs. Time (hr)	Spearman's rho (r)	p-value	95 % Confidence Intervals
					Lower	Upper
Experiment 1A: Building Scale	−0.0265	SARS-CoV-2 vs. Time	−0.093	0.666	−0.488	0.334
	−0.0156	SIV vs. Time	−0.217	0.310	−0.579	0.217
	−0.0144	PMMoV vs. Time	0.103	0.633	−0.325	0.495
	−0.0202	B2M vs. Time	−0.385	0.063	−0.689	0.034
	0.462	FC vs. Time	0.731	<0.001	0.455	0.879
Experiment 2A: Cluster Scale	−0.0102	SARS-CoV-2 vs. Time	−0.126	0.557	−0.513	0.304
	−0.0432	SIV vs. Time	−0.764	<0.001	−0.895	−0.513
	0.00040	PMMoV vs. Time	0.108	0.616	−0.320	0.499
	−0.0095	B2M vs. Time	−0.350	0.094	−0.667	0.075
	0.128	FC vs. Time	0.508	0.011	0.119	0.762
Experiment 3A: Community Scale	0.0296	SARS-CoV-2 vs. Time	0.369	0.076	−0.053	0.679
	−0.105	SIV vs. Time	−0.959	<0.001	−0.983	−0.904
	0.0189	PMMoV vs. Time	0.375	0.071	−0.046	0.683
	0.0172	B2M vs. Time	−0.080	0.710	−0.478	0.345
	0.0218	FC vs. Time	0.536	0.007	0.157	0.777