• Clean Harbors average return on investment for 2023 was 9.02, a 8.94% decline from 2022.
• Clean Harbors average return on investment for 2022 was 8.28, a 36.86% increase from 2021.
• Clean Harbors average return on investment for 2021 was 6.05, a 49.01% increase from 2020.

Roi - return on investment can be defined as an indicator of how profitable a company is relative to its assets invested by shareholders and long-term bond holders. Calculated by dividing a company's operating earnings by its long-term debt and shareholders equity.