Table 1. Summary of Wastewater Treatment Facilities/Sewersheds and Sample Characteristics.
| facility/sewershed | population served | flow rate (mgd) | sample type and source | sample collection volume (mL) | C. auris sampling time frame |
|---|---|---|---|---|---|
| 1 | 872,009 | 100 | grab influent | 150 | 7/11/2022–9/6/2022 |
| grab primary effluent | 10,000a | 6/27/2022–9/6/2022 | |||
| 2 | 86,330 | 5 | composite influent | 10,000a | 6/27/2022–9/6/2022 |
| 3 | 757,418 | 42 | composite/grab influentd | 150 | 7/5/2022–9/6/2022 |
| 4b,c | N/Ab | N/Ab | composite influent | 150 | 7/5/2022–9/6/2022 |
| 4Ab,c | 133,977 | 15 | grab influent | 150 | 7/5/2022–9/6/2022 |
| 4Bb | 114,532 | 6 | grab influent | 150 | 7/5/2022–9/6/2022 |
| 5 | 255,008 | 20 | composite influent | 150 | 7/5/2022–9/6/2022 |
| 6 | 16,399 | 0.8 | grab influent | 150 | 7/5/2022–9/6/2022 |
a
10,000 mL samples were processed using hollow fiber ultrafiltration (HFUF) prior to pelleting by centrifugation.
b
Facility 4 is the 24-hour composite of Facility 4A (west trunk line) and Facility 4B (east trunk line).
c
Facility 4A (and by default Facility 4) receives solids and bypass flows from Facility 2.
d
Grab influent samples were collected on 8/15, 8/22, and 8/29 (otherwise composite).