PERI: Toxic 100 Index

Rio Tinto

Rank in Toxic 100 Water: 18
Surface Water releases 2014 (lbs): 11,403
POTW (sewerage plant) transfers 2014 (lbs): 10
Pounds released post-treatment 2014 (lbs): 11,406
Total Surface Water and POTW Toxic Hazard 2014: 1,318,375,544
Percentage of national total 2014 surface water and POTW hazard: 0.507%

Chemicals displayed below: (display facilities) (display chemicals at facilities)
(Click on column headers to re-sort table: current sort is by chemical name.)
(Links on chemical names lead to Scorecard chemical health effects.)

Chemical	Surface water releases (lbs)	POTW transfers (lbs)	Post-treatment releases (lbs)	Toxic Hazard (quantity x toxicity)	Percent of total company hazard
Ammonia	500	0	500	0	0.00%
Antimony and antimony compounds	1,000	0	1,000	2,500,000	0.19%
Arsenic and arsenic compounds	533	0	533	799,500,000	60.64%
Cadmium and cadmium compounds	21	0	21	42,000	0.00%
Chromium and chromium compounds	1,000	0	1,000	500,000,000	37.93%
Copper and copper compounds	524	0	524	786,000	0.06%
Cresol (mixed isomers)	500	0	500	10,000	0.00%
Dioxin and dioxin-like compounds	0	0	0	0	0.00%
Hydrochloric acid	0	0	0	0	0.00%
Lead and lead compounds	59	0	59	1,062,000	0.08%
Manganese and manganese compounds	1,000	0	1,000	7,100	0.00%
Mercury and mercury compounds	0	0	0	0	0.00%
Nickel and nickel compounds	447	0	447	40,677	0.00%
Nitrate compounds	2,000	0	2,000	1,260	0.00%
Nitric acid	0	0	0	0	0.00%
Selenium and selenium compounds	426	0	426	85,200	0.01%
Silver and silver compounds	1,000	0	1,000	200,000	0.02%
Sulfuric acid	0	0	0	0	0.00%
Thallium and thallium compounds	1,000	0	1,000	14,000,000	1.06%
Vanadium and vanadium compounds	1,000	0	1,000	140,000	0.01%
Zinc and zinc compounds	393	10	396	1,307	0.00%

Toxic hazard: Pounds of direct releases to surface water and estimated releases from transfers to Publicly Operated Treatment Works (POTW's) reported in the US Environmental Protection Agency's Toxics Release Inventory for the year 2014, 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.

Quantity of toxic post-treatment releases: Pounds of toxic chemicals released directly to surface water plus released after treatment at POTW's.

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