COVID Levels in Ohio
In the week ending 10 October 2026, wastewater virus levels in Ohio were High or Very High for COVID-19 at 0 of 57 sites, Flu A at 0 of 57 sites, RSV at 0 of 54 sites. COVID-19 was High or Very High at 0% of the state's sampling sites. Source: CDC wastewater surveillance.
Very High High Moderate Low Very Low
Sampling sites in Ohio 57
| Counties served | People served | COVID-19 | Flu A | RSV |
|---|---|---|---|---|
| Franklin | 654,817 | Low | Very Low | Very Low |
| Franklin | 645,940 | Very Low | Very Low | Very Low |
| Cuyahoga | 524,154 | Very Low | Very Low | Very Low |
| Hamilton | 488,000 | Very Low | Very Low | Very Low |
| Portage, Summit | 365,000 | Low | Very Low | Very Low |
| Lucas | 322,446 | Very Low | Very Low | Very Low |
| Cuyahoga | 313,158 | Very Low | Very Low | Very Low |
| Montgomery | 226,729 | Low | Very Low | Very Low |
| Mahoning | 174,000 | Very Low | Very Low | Very Low |
| Hamilton | 143,000 | Very Low | Very Low | Very Low |
| Lucas | 110,000 | Very Low | Very Low | Very Low |
| Cuyahoga | 103,379 | Very Low | Very Low | Very Low |
| Medina | 86,586 | Low | Very Low | Very Low |
| Stark | 85,000 | Very Low | Very Low | Very Low |
| Lorain | 72,000 | Very Low | Very Low | Very Low |
| Butler | 65,000 | Low | Very Low | Very Low |
| Montgomery | 65,000 | Low | Very Low | Very Low |
| Allen | 61,000 | Very Low | Very Low | Very Low |
| Clark | 60,000 | Very Low | Very Low | Very Low |
| Erie | 55,000 | Very Low | Very Low | Very Low |
| Trumbull | 54,037 | Very Low | Very Low | Very Low |
| Richland | 52,000 | Very Low | Very Low | Very Low |
| Muskingum | 47,500 | Very Low | Very Low | Very Low |
| Licking | 45,000 | Very Low | Very Low | Very Low |
| Hancock | 41,273 | Very Low | Very Low | Very Low |
| Marion | 36,000 | Very Low | Very Low | Very Low |
| Wood | 32,000 | Very Low | Very Low | Very Low |
| Ashtabula | 31,430 | Very Low | Very Low | Very Low |
| Portage | 29,000 | Very Low | Very Low | Very Low |
| Wayne | 27,000 | Low | Very Low | — |
| Sandusky | 25,000 | Very Low | Very Low | Very Low |
| Union | 24,677 | Very Low | Very Low | Very Low |
| Athens | 24,536 | Low | Very Low | Very Low |
| Scioto | 20,366 | Very Low | Very Low | — |
| Lake | 20,000 | Very Low | Very Low | Very Low |
| Defiance | 19,900 | Very Low | Very Low | Very Low |
| Knox | 18,000 | Very Low | Very Low | Very Low |
| Huron | 17,000 | Very Low | Very Low | Very Low |
| Washington | 15,284 | Low | Very Low | Very Low |
| Fayette | 14,000 | Very Low | Very Low | Very Low |
| Pickaway | 13,965 | Very Low | Very Low | Very Low |
| Tuscarawas | 13,572 | Very Low | Very Low | Very Low |
| Belmont | 13,169 | Very Low | Very Low | Very Low |
| Darke | 13,000 | Very Low | Very Low | Very Low |
| Crawford | 12,362 | Low | Very Low | Very Low |
| Coshocton | 12,000 | Very Low | Very Low | Very Low |
| Lawrence | 10,445 | Very Low | Very Low | Very Low |
| Williams | 8,655 | Very Low | Very Low | Very Low |
| Hardin | 8,500 | Very Low | Very Low | — |
| Hocking | 8,500 | Very Low | Very Low | Very Low |
| Preble | 8,400 | Very Low | Very Low | Very Low |
| Ottawa | 7,000 | Very Low | Very Low | Very Low |
| Wyandot | 6,700 | Low | Very Low | Very Low |
| Fulton | 6,000 | Very Low | Very Low | Very Low |
| Mercer | 4,800 | Very Low | Very Low | Very Low |
| Greene | 4,100 | Very Low | Very Low | Very Low |
| Carroll | 3,500 | Low | Very Low | Very Low |
When levels are high where you live
- Stay current on vaccines for COVID-19 and flu, and RSV if you are 75+, 50–74 with risk factors, pregnant, or have an infant.
- Test if you have symptoms; antivirals for COVID-19 and flu work best in the first days and are meant for people at higher risk.
- A well-fitting mask in crowded indoor places and better ventilation cut the risk for you and for people around you.
- Stay home when sick. Outbreak news is in our epidemic record.
What this page shows, and what it misses
CDC's weekly wastewater viral activity level for each sampling site — a treatment plant or a point upstream — compared with that site's own baseline, in five categories from Very Low to Very High. State rows count sites; CDC's own state level, on its map, weighs sites differently and can differ from what these counts suggest. Places not on a sewer system, and sites that did not report this week, are not covered. Wastewater shows community spread, not the number of cases.
Data: Centers for Disease Control and Prevention, National Wastewater Surveillance System, "CDC Wastewater Viral Activity Level for SARS-CoV-2, Influenza A and RSV" (data.cdc.gov) — public domain U.S. Government work.