In Q3 fiscal 2023 (the quarter ended September 30, 2023), Clean Harbors's largest business segment was Environmental Services, with $1.15 billion or 84% of revenue, up 5.5% from a year earlier. Next: Safety-Kleen Sustainability Solutions (16%).
By product or service, Technical Services brought in 31%, Safetly-Kleen Environmental Services brought in 22% and Industrial Services and Other brought in 21% of revenue in Q2 fiscal 2026.
By region, United States brought in 91% and Canada brought in 9% of revenue in Q2 fiscal 2026.
The fastest-growing business segment from a year earlier was Environmental Services (+5.5%).
From company filings, in USD; latest quarter ended September 30, 2023; quarterly data from Q3 fiscal 2017.

Fiscal quarters, from company filings
| Business segment | Q2 FY26 | Q1 FY26 | Q3 FY25 | Q2 FY25 | Share |
|---|---|---|---|---|---|
| Environmental Services | – | – | – | – | 84% |
| Safety-Kleen Sustainability Solutions | – | – | – | – | 16% |
In USD, fiscal quarters as reported; share = part of Q3 FY23 revenue.
| Product or service | Q2 FY26 | Q1 FY26 | Q3 FY25 | Q2 FY25 | Share |
|---|---|---|---|---|---|
| Technical Services | $544.9M | $448.3M | $490.8M | $463.4M | 31% |
| Safetly-Kleen Environmental Services | $379.4M | $338.2M | $340.0M | $334.7M | 22% |
| Industrial Services and Other | $358.9M | $302.6M | – | $361.7M | 21% |
| Field and Emergency Response | $249.0M | $231.4M | $232.3M | $242.8M | 14% |
| Safety-Kleen Oil | $202.7M | $139.1M | $154.2M | $147.2M | 12% |
In USD, fiscal quarters as reported; share = part of Q2 FY26 revenue.
| Region | Q2 FY26 | Q1 FY26 | Q3 FY25 | Q2 FY25 | Share |
|---|---|---|---|---|---|
| United States | $1.6B | $1.4B | $1.4B | $1.4B | 91% |
| Canada | $164.2M | $108.2M | $152.6M | $146.9M | 9% |
In USD, fiscal quarters as reported; share = part of Q2 FY26 revenue.
Environmental Services and Safety-Kleen Sustainability Solutions (as reported for Q3 fiscal 2023).
Environmental Services: $1.15 billion, or 84% of revenue, in Q3 fiscal 2023.
By revenue in Q2 fiscal 2026: Technical Services (31%), Safetly-Kleen Environmental Services (22%), Industrial Services and Other (21%) and Field and Emergency Response (14%).
By region in Q2 fiscal 2026: United States (91%) and Canada (9%).
Click a bar to see that period below. Striped bars are calculated fourth quarters; an empty slot means it could not be calculated on the same basis i
Fiscal quarter ended Jun 30, 2026
| Item | Revenue | Share |
|---|---|---|
| Reportable | USD 1.74B | 100.0% |
| Corporate and otheri | USD 0 |
Sum of items USD 1.74B; corporate items and eliminations USD 0. Shares are of the items shown. Click an item with › to see its parts.
Every item and period in one grid. Purple = calculated; "–" = not available.
| Item | Q2 FY26 | Q1 FY26 | Q4 FY25 | Q3 FY25 | Q2 FY25 | Q1 FY25 | Q4 FY24 | Q3 FY24 | Q2 FY24 | Q1 FY24 | Q4 FY23 | Q3 FY23 | Q2 FY23 | Q1 FY23 | Q4 FY22 | Q3 FY22 | Q2 FY22 | Q1 FY22 | Q4 FY21 | Q3 FY21 | Q2 FY21 | Q1 FY21 | Q4 FY20 | Q3 FY20 | Q2 FY20 | Q1 FY20 | Q4 FY19 | Q3 FY19 | Q2 FY19 | Q1 FY19 | Q4 FY18 | Q3 FY18 | Q2 FY18 | Q1 FY18 | Q4 FY17 | Q3 FY17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reportable | 1.7B | 1.5B | 1.5B | 1.5B | 1.5B | 1.4B | 1.4B | 1.5B | 1.6B | 1.4B | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Environmental Services | – | – | – | – | – | – | – | – | – | – | 1.1B | 1.1B | 1.2B | 1.1B | 1.0B | 1.1B | 1.1B | 947.4M | 908.1M | 745.6M | 724.1M | 654.6M | 667.6M | 650.6M | 612.6M | 705.2M | – | – | – | – | – | – | – | – | – | – |
| Environmental Services | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 550.1M | 563.1M | 509.0M | 638.6M | 508.8M | 519.9M | 439.7M | – | 440.2M |
| Safety-Kleen Sustainability Solutions | – | – | – | – | – | – | – | – | – | – | 215.8M | 219.2M | 225.7M | 236.5M | 231.0M | 276.3M | 265.5M | 221.6M | 211.3M | 205.8M | 202.3M | 153.5M | 128.6M | 128.7M | 97.3M | 153.3M | – | – | – | – | – | – | – | – | – | – |
| Safety-Kleen Sustainability Solutions | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 341.4M | 306.0M | 272.5M | 221.8M | 333.9M | 328.7M | 309.9M | – | 315.0M |
| Corporate and other | 0 | 0 | 0 | 0 | 89.0K | 97.0K | 110.0K | 96.0K | 99.0K | 102.0K | 112.0K | 112.0K | 116.0K | 107.0K | 73.0K | 283.0K | 79.0K | 72.0K | 82.0K | 59.0K | 79.0K | 79.0K | 72.0K | 72.0K | 56.0K | 90.0K | – | 129.0K | – | – | – | – | – | – | – | – |
| Corporate | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 509.0K | 172.0K | – | 655.0K |
| Corporate and other | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 467.0K | – | – | – | 655.0K |