# Large Quantity Generators (LQGs) — Hazardous waste generator categories — federal vs California vs Washington thresholds and obligations

For Large Quantity Generators (LQGs), authority is EPA (federal, 40 CFR 262.13); quantity threshold is 1,000 kilograms per month or more of hazardous waste; acute waste threshold is more than one kilogram per month of acutely hazardous waste; key obligations is LQGs may only accumulate waste on-site for 90 days. Certain exceptions apply. LQGs do not have a limit on the amount of hazardous waste accumulated on-site, recorded from its source on 2026-08-11.

- **Authority:** EPA (federal, 40 CFR 262.13) _(our reading, not quoted from the source)_
- **Generator category:** Large Quantity Generators (LQGs) _(verified: appears in the quote below)_
- **Quantity threshold:** 1,000 kilograms per month or more of hazardous waste _(verified: appears in the quote below)_
- **Acute waste threshold:** more than one kilogram per month of acutely hazardous waste _(verified: appears in the quote below)_
- **Key obligations:** LQGs may only accumulate waste on-site for 90 days. Certain exceptions apply. LQGs do not have a limit on the amount of hazardous waste accumulated on-site. _(verified: appears in the quote below)_

## What the source says

> Large Quantity Generators (LQGs) generate 1,000 kilograms per month or more of hazardous waste or more than one kilogram per month of acutely hazardous waste. Major requirements for LQGs include: LQGs may only accumulate waste on-site for 90 days. Certain exceptions apply. LQGs do not have a limit on the amount of hazardous waste accumulated on-site.

## Source

- https://www.epa.gov/hwgenerators/categories-hazardous-waste-generators

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/).