Levels less than 1.5 are considered minimal, 1.5 to 3 are low, 3 to 4.5 are moderate, 4.5 to 8 are high, and greater than 8 are very high.
A multiple line chart showing Covid wastewater levels in 2022, 2023, 2024. Levels are currently higher than they were in 2023, and may soon surpass where they were in 2022.