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Rio Tinto

Rank in Toxic 100 Water Polluters: 24
Surface Water releases 2022 (lbs): 9,971
POTW (sewerage plant) transfers 2022 (lbs): 27
Total Surface Water and POTW Toxic Hazard 2022: 588,185,597
Percentage of national total 2022 surface water and POTW hazard: 0.2%
EJ: Near Poor Share: 14%
EJ: Minority Share: 20%

You can also view this company's penalties in Violation Tracker.
You can also look at this company's state, local, and Federal subsidies in Subsidy Tracker.
This company is rank 21 on the Toxic 100 Air Polluters list.
This company has information in PERI's Greenhouse 100 Polluters database.

Chemicals at facilities displayed below: (
display facilities) (display chemicals)
(Click on column headers to re-sort table: current sort is by percent of total company hazard.)
(Links on facility names lead to full TRI reports. Links on chemical names lead to New Jersey Right To Know Hazardous Substance Fact Sheets that have information on chemical health effects.)
Split *
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Arsenic compounds 196 0 294,000,000 49.98%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Arsenic compounds 70 0 105,000,000 17.85%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Chromium compounds (except for chromite ore mined in the Transvaal Region of South Africa and the unreacted ore component of the chromite ore processing residue (COPR). COPR is the solid waste remaining after aqueous extraction of oxidized chromite ore that has been combined with soda ash and kiln roasted at approximately 2,000 F.) 500 0 85,000,000 14.45%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Chromium compounds (except for chromite ore mined in the Transvaal Region of South Africa and the unreacted ore component of the chromite ore processing residue (COPR). COPR is the solid waste remaining after aqueous extraction of oxidized chromite ore that has been combined with soda ash and kiln roasted at approximately 2,000 F.) 500 0 85,000,000 14.45%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Thallium compounds 500 0 7,000,000 1.19%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Vanadium compounds 500 0 7,000,000 1.19%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Antimony compounds 500 0 1,250,000 0.21%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Antimony compounds 500 0 1,250,000 0.21%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Lead compounds 45 0 810,000 0.14%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) 354 0 531,000 0.09%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Cyanide compounds 1,845 0 369,000 0.06%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Lead compounds 15 0 270,000 0.05%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) 118 0 177,000 0.03%
MATALCO INC. BLUFFTON IN Chromium 0 16 160,000 0.03% 50%
OHIO VALLEY ALUMINUM CO INC SHELBYVILLE KY Chromium compounds (except for chromite ore mined in the Transvaal Region of South Africa and the unreacted ore component of the chromite ore processing residue (COPR). COPR is the solid waste remaining after aqueous extraction of oxidized chromite ore that has been combined with soda ash and kiln roasted at approximately 2,000 F.) 15 0 150,200 0.03% 50%
OHIO VALLEY ALUMINUM CO INC SHELBYVILLE KY Lead 7 0 125,784 0.02% 50%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Silver compounds 500 0 100,000 0.02%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Silver compounds 500 0 100,000 0.02%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Selenium compounds 160 0 32,000 0.01%
OHIO VALLEY ALUMINUM CO INC SHELBYVILLE KY Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) 20 0 29,550 0.01% 50%
MATALCO INC. BLUFFTON IN Copper 0 16 24,000 0.00% 50%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Nickel compounds 232 0 21,112 0.00%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Nickel compounds 77 0 7,007 0.00%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Selenium compounds 28 0 5,600 0.00%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Cresol (mixed isomers) 250 0 5,000 0.00%
KENNECOTT UTAH COPPER MINE CONCENTRATORS & POWER PLANT BINGHAM CANYON UT Manganese compounds 500 0 3,550 0.00%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Manganese compounds 500 0 3,550 0.00%
MATALCO INC. BLUFFTON IN Lead 0 0 3,240 0.00% 50%
MATALCO WISCONSIN RAPIDS WI Lead 0 0 2,340 0.00% 50%
MATALCO (US) INC CANTON OH Lead 0 0 1,620 0.00% 50%
MATALCO (US) INC CANTON OH Copper 0 1 1,500 0.00% 50%
MATALCO WISCONSIN RAPIDS WI Copper 0 1 1,500 0.00% 50%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Nitrate compounds (water dissociable; reportable only when in aqueous solution) 1,000 0 630 0.00%
US BORAX INC. WILMINGTON CA Zinc compounds 52 2 177 0.00%
MATALCO INC. BLUFFTON IN Manganese 0 16 114 0.00% 50%
OHIO VALLEY ALUMINUM CO INC SHELBYVILLE KY Manganese compounds 10 0 73 0.00% 50%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Zinc compounds 3 0 11 0.00%
KENNECOTT UTAH COPPER SMELTER & REFINERY MAGNA UT Ammonia (includes anhydrous ammonia and aqueous ammonia from water dissociable ammonium salts and other sources; 10 percent of total aqueous ammonia is reportable under this listing) 500 0 0 0.00%

For explanations of most columns above, including the EJ Shares, see the technical notes.

Toxic hazard: Pounds of direct releases to surface water and pounds transferred to Publicly Operated Treatment Works (POTW's) reported in the US Environmental Protection Agency's Toxics Release Inventory for the year 2022, weighted by toxicity of chemicals. Weights are from the EPA's Risk-Screening Environmental Indicators project. For details, see technical notes.

Quantity of toxic surface water releases and POTW transfers: Pounds of toxic chemicals released directly to surface water at each TRI facility or transferred off-site to a POTW, without weighting for toxicity or population.

* Split: if 50% appears in this column, then the facility's releases have been split among two 50/50% ownership parent companies for their parent company data, although the full pounds and hazard are displayed here.

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