Table 2.

Number of mutations across all SARS-CoV-2 wastewater samples. Counts were recorded after variant calling all samples as well as after quality filtering the datasets. The number of mutations that are exclusively found within a dataset (Illumina or Nanopore) are also noted, with a significant reduction in exclusively Nanopore mutations that can be attributed to background noise.

Initial Analysis
Number of Mutations		Exclusive
Total	23,688	N/A
Illumina	1259	583
Nanopore	23,105	22,429
After Filtering
Number of Mutations		Exclusive
Total	1259	N/A
Illumina	1249	534
Nanopore	725	10