# small quantity generator (SQG) — Hazardous waste generator categories — federal vs California vs Washington thresholds and obligations

For small quantity generator (SQG), authority is Washington Ecology (WAC 173-303); quantity threshold is 220 pounds or less of dangerous waste; acute waste threshold is 2.2 pounds or less of toxic extremely hazardous waste and/or acute hazardous waste, recorded from its source on 2026-08-11.

- **Authority:** Washington Ecology (WAC 173-303) _(our reading, not quoted from the source)_
- **Generator category:** small quantity generator (SQG) _(verified: appears in the quote below)_
- **Quantity threshold:** 220 pounds or less of dangerous waste _(verified: appears in the quote below)_
- **Acute waste threshold:** 2.2 pounds or less of toxic extremely hazardous waste and/or acute hazardous waste _(verified: appears in the quote below)_

## What the source says

> You are considered a small quantity generator (SQG) if you generate: • 220 pounds or less of dangerous waste, AND • 2.2 pounds or less of toxic extremely hazardous waste and/or acute hazardous waste, AND • 220 pounds or less of spills of toxic extremely hazardous waste and/or acute hazardous waste.

## Source

- https://ecology.wa.gov/Asset-Collections/Doc-Assets/Hazardous-waste/Dangerous-Waste-Guidance/Dangerous-Waste-Basics/Monthly-generation-limits-plain-text

Last verified: 2026-08-11. Review by: 2027-08-11.
Part of [Hazardous waste generator categories — federal vs California vs Washington thresholds and obligations](https://referencesource.org/hazwaste-generator-category-thresholds/).