Copper And Copper Compounds
Copper And Copper Compounds at Clean Harbors Buttonwillow LLC have more than doubled since 2011 (through 2024).
TRI facility · TRI 2024 reporting year
Clean Harbors Buttonwillow LLC
Total reported releases 5.3M lb fell meaningfully year over year (-34%). Total releases concentrations have fallen 41% since 2010.
2500 WEST LOKERN ROAD, Buttonwillow, California · 562211 · Hazardous Waste · operated by Clean Harbors INC
Anomaly engine
Notable Signals
Methanol
Methanol releases at Clean Harbors Buttonwillow LLC fell from 919k lb to 239k lb (74% lower) between 2023 and 2024.
Selenium compounds
Selenium compounds releases at Clean Harbors Buttonwillow LLC fell from 1.3M lb to 349k lb (73% lower) between 2023 and 2024.
Lead And Lead Compounds
Lead And Lead Compounds releases at Clean Harbors Buttonwillow LLC fell from 837k lb to 255k lb (70% lower) between 2023 and 2024.
Showing the 4 most editorially weighted signals out of 5. Lower-severity signals fold into the chemical breakdown and history charts below.
Chemicals reported · most recent year
What This Facility Releases
Asbestos (friable)
Asbestos (friable) concentrations have more than halved since 2010.
Aluminum oxide (fibrous forms)
Aluminum oxide (fibrous forms) concentrations are up 27% since 2010.
Copper And Copper Compounds
Copper And Copper Compounds concentrations have more than doubled since 2011.
Nickel And Nickel Compounds
Nickel And Nickel Compounds concentrations have more than doubled since 2010.
Ethylene glycol
Ethylene glycol concentrations have more than doubled since 2010.
Selenium compounds
Selenium compounds concentrations have more than halved since 2021.
Lead And Lead Compounds
Lead And Lead Compounds concentrations have more than halved since 2010.
Methanol
Methanol concentrations have fallen 23% since 2019.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Kern County County, CA (no Census block groups within 3 miles — falling back to containing county): a population of 906,883. Why we surface this →
19.3%
Low-income
68.5%
People of color
7.9%
Under age 5
11.3%
Over age 64
Source: Census ACS 2018-2022 (5-year), county-level fallback. Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.