City of Sedona issued the following announcement on Aug. 2.
Water quality counts taken between 9:45 a.m. and 12:10 p.m. on Thursday, July 29, 2021 show E. coli levels at all test sites were below the state and federal water quality E. coli limit of 235 Colony Forming Units (CFU)/100mL of water for recreational swimming. This is believed to be due from the lack of heavy rain in the three days leading up to the test, unlike the weekend prior. The city measured E. coli one last time as an additional precaution after testing on July 24 and July 25, 2021:
| Location on Oak Creek | E. coli Results - 7/24/21 - Most Probable Number (MPN)/100 mL | E. coli Results - 7/25/21 - Most Probable Number (MPN)/100 mL | E. coli Results - 7/29/21 - Most Probable Number (MPN)/100 mL |
| Poco Diablo/Oak Creek Cliffs Drive upstream from spill | 1,575 | 2,932 | 65.6 |
| Red Rock State Park | 2,966 | 3,578 | 50.2 |
| Deer Pass Trail | 7,308 | 7,421 | 30.9 |
| Page Springs Bridge | 3,583 | 9,448 | 64.8 |
| Page Springs Bridge Duplicate | 4,487 | 8,712 | 72.4 |
| Windmill Park | 12,976 | 14,540 | 141.4 |
The 235 CFU/100 mL of water limit is a surface water quality standard specific to E. coli set to protect public health.
Original source can be found here.
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