Environmental Data Index

BIODIVERSITY

Biodiversity impacts Units 2014 2015 2016 2017 2018
Sites in which biodiversity is covered in EIA or similar document number 11 of 13 11 of 11 11 of 11 10 of 13 13 of 13
Mine lease area thousand hectares 376 364 256 288 294
Potential area of impact thousand hectares 185 185 44 59 59
Total IUCN-listed wildlife mortalities number 237 244 129 117 128
Vulnerable number 0 0 0 0 16
Endangered number 1 1 0 0 0
Critically endangered number 0 0 0 0 0
Near threatened number 5 3 1 2 6
Least concern number 231 240 128 110 106
Not specified number 0 0 0 5 0

MM1

Closure and Reclamation

2018 Reclamation in progress by country in hectares (ha) Reclamation area (ha)
Country
Australia 1,065.4
Ghana 198.6
Peru 822.5
Suriname 33.0
U.S. 3,528.6
Total 5,648.1

Amount of land disturbed or rehabilitated (thousand ha) 2014 2015 2016 2017 2018
New disturbance during reporting period 0.39 0.30 0.59 0.71 0.50
Total reclamation in progress 4.40 3.61 4.20 5.04 5.65
Achieved reclamation (to agreed upon end use) during reporting period 0.04 0.04 0.00 0.18 0.15
Total disturbance not yet reclaimed to agreed upon end use at end of reporting period 31.70 31.93 31.64 33.12 34.18

2018 Amount of land disturbed or rehabilitated (ha) New disturbance during reporting period Total reclamation in progress (cumulative) Achieved reclamation (to agreed upon end use) during reporting period Total disturbance not yet reclaimed to agreed upon end use at end of reporting period Mine lease area
Africa 56 199 30 3,474 61,637
Ahafo 54 173 30 2,357 55,362
Akyem 2 26 0 1,116 6,275
Australia 57 1,065 42 8,645 47,904
Boddington 2 251 31 4,092 9,642
KCGM 40 369 11 2,963 34,307
Tanami 15 445 0 1,589 3,955
U.S. 150 3,529 76 16,697 38,076
CC&V 22 177 3 1,268 2,431
Nevada (combined sites) 128 3,352 72 15,430 35,645
South America 238 855 0 5,363 146,858
Suriname 175 33 0 1,375 25,916
Peru 63 823 0 3,989 120,942
Total 501 5,648 148 34,179 294,475


301-1

Cyanide Management

Cyanide use (thousand tonnes) 2014 2015 2016 2017 2018
Sodium cyanide (NaCN) 46.2 49.2 57.8 68.6 59.1

2018 Cyanide incidents Release off site requires response or remediation Adverse effects to health Adverse effects to the environment Required reporting under applicable regulations Exceedances of applicable limits of Cyanide Code Impact to biodiversity
Ahafo 0 0 0 0 0 0
Akyem 0 0 0 0 0 0
Boddington 0 0 0 3 4 0
KCGM 0 0 0 0 3 0
Tanami 0 0 0 0 12 2
CC&V 0 0 0 0 0 2
Nevada (combined sites) 0 0 0 5 2 0
Merian 0 0 0 0 0 0
Yanacocha 0 0 0 1 2 1
Total 0 0 0 9 23 5
Off-site releases requiring response or remediation not applicable for 2018. Cyanide-related biodiversity impacts are wildlife fatalities; for a full listing of wildlife fatalities, refer to the Biodiversity data tables.

305-1,

Energy and Climate Change

Energy consumption: Direct and indirect energy by source (million gigajoules [GJ]) 2014 2015 2016 2017 2018
Direct energy consumption by source
Direct non-renewable 52.1 45.8 33.3 37.0 37.0
Coal 26.4 18.9 10.1 10.4 10.8
Diesel 22.6 24.4 20.6 22.6 22.2
Waste oil 0.0 0.0 0.0 0.0 0.0
Gasoline 0.1 0.1 0.1 0.2 0.2
Natural gas 1.8 1.8 2.1 2.2 2.1
Propane 0.8 0.3 0.2 0.2 0.2
Heavy fuel oil 0.2 0.2 0.0 1.4 1.5
Aviation fuel 0.0 TR 0.2 0.0 0.0
Direct renewable energy consumption 0.3 0.3 0.2 0.2 0.2
Total direct energy consumed 52.4 46.0 33.5 37.2 37.2
Indirect energy consumption by source
Grid electricity from renewable sources 3.8 3.5 3.6 3.3 3.5
Grid electricity from non-renewable sources 5.2 6.5 8.6 8.9 8.6
Total grid electricity (indirect energy generation) 9.0 10.0 12.2 12.2 12.1
Total combined direct and indirect 61.4 56.0 45.7 49.4 49.2
Note: Years 2014 and 2015 include direct energy consumption from Batu Hijau before it was divested. Diesel energy consumption for 2016 and 2017 was corrected for energy content. Note: Data reflects total fuel usage for power production and mining operations, converted to gigajoules (GJ).

Total electricity consumption (million gigajoules [GJ]) 2014 2015 2016 2017 2018
Total on-site (direct) electricity generated 8.9 6.7 3.8 3.8 4.7
Diesel power 0.7 0.9 0.7 0.6 0.8
Heavy fuel oil and waste oil 0.000 0.010 0.004 0.004 0.613
Coal-fired power 8.2 5.8 3.1 3.2 3.2
Natural gas–fired power 0.0 0.0 0.0 0.0 0.0
LPG/propane power 0.0 0.0 0.0 0.0 0.0
Total on-site (direct) electricity sold 1.1 1.2 0.0 0.0 0.0
Total on-site (direct) electricity consumed 7.8 5.5 3.8 4.3 4.7
Note: Data reflects total fuel usage for power production and mining operations, converted to gigajoules (GJ).

Direct non-renewable energy consumption by source as percentage of total consumption 2014 2015 2016 2017 2018
Coal 50.7% 41.3% 32.5% 32.8% 29.2%
Diesel 43.4% 53.3% 58.8% 58.6% 59.6%
Waste oil <1% <1% 0% 0% 0%
Gasoline <1% <1% <1% <1% 0.5%
Natural gas 3.5% 3.9% 6.8% 6.8% 5.5%
Propane 1.5% <1% <1% <1% 0.6%
Heavy fuel oil <1% <1% 0% <1% 4.0%
Aviation fuel <1% 0% <1% 0% 0%

2018 Electric power sourced from hydroelectric and other renewables (kWh) Total electricity consumed from grid and site generation Total grid electricity from renewable sources Total site electricity from renewable sources Percent of electric power sourced from hydroelectric and other renewables
Country
Ghana 518,019,765 195,878,811 75,074 37.8%
Peru 448,222,225 267,226,001 6,981 59.6%
U.S. 1,864,749,940 500,514,836 0 26.8%
Note: Australia and Suriname do not source electric power from hydroelectric and other renewable sources and are omitted from this table.

Greenhouse gas emissions (million tonnes CO2 equivalents) 2014 2015 2016 2017 2018
Total direct emissions (Scope 1) 4.10 3.80 2.70 3.10 3.11
From coal 2.10 1.70 0.90 1.00 1.07
From diesel 1.60 1.70 1.40 1.60 1.56
From waste oil 0.00 0.00 0.00 0.00 TR
From gasoline 0.01 0.01 0.01 0.01 0.01
From natural gas 0.09 0.09 0.10 0.11 0.11
From propane 0.05 0.02 0.01 0.01 0.01
From heavy fuel oil 0.02 0.02 0.00 0.01 0.11
From aviation fuel 0.00 0.00 0.01 0.00 TR
From ammonium nitrate, fuel oil (ANFO) 0.00 0.00 0.00 0.01 0.01
From heavy ANFO 0.01 0.01 0.00 0.00 0.00
From emulsion 0.01 0.02 0.01 0.01 0.01
From autoclave 0.11 0.11 0.11 0.11 0.10
From roasters 0.11 0.11 0.09 0.10 0.10
From quick lime production 0.04 0.04 0.00 0.00 0.01
From ARD neutralization 0.00 0.00 0.00 0.00 0.00
Sulfur hexafluoride (SF6) TR TR TR TR 0.00
Hydrofluorocarbon (HFC) 0.00 0.00 0.00 0.00 0.01
Methane (CH4) TR TR TR TR TR
Total indirect emissions (Scope 2) 1.20 1.70 1.60 1.60 1.58
Total emissions (Scope 1 and 2) 5.30 5.50 4.30 4.70 4.69
TR = Trace, which is <0.0001
Note: Greenhouse gas emissions are calculated using emission factors from the Climate Registry and Australia National Greenhouse Accounts Factor. We do track and report Scope 3 emissions in our CDP Climate annual response.

306-3

Environmental Releases

Environmental releases by number of incidents 2014 2015 2016 2017 2018
Total environmental releases on site 84 43 81 78 50
Total environmental releases off site 0 0 0 1 0
Total environmental releases 84 43 81 79 0
Cyanide releases 76 41 77 77 2
Mercury releases 0 1 2 0 0
Significant hydrocarbon releases 6 1 1 0 0
Significant chemical releases 1 0 0 2 0
Other significant releases 1 0 1 0 0
Note: All cyanide releases in 2018 were on site, contained within the site boundaries and remediated according to applicable regulations. Significant releases are those categorized as having an environmental impact of level 3 or greater on a scale of level 1 to 5.

Environmental releases by volume 2014 2015 2016 2017 2018
Cyanide releases (kL) 99 582 2,500 3,406 5,768
Mercury releases (kg) 0 0.01 1.7 0 0
Significant hydrocarbon releases (kL) 42 2 2 0 0
Significant chemical releases (kL) 40 0 0 0 0
Other significant releases (kL) 5 0 31 0 0
Note: All cyanide releases in 2018 were on site, contained within the site boundaries and remediated according to applicable regulations. Significant releases are those categorized as having an environmental impact of level 3 or greater on a scale of level 1 to 5.
305-7,

Waste Management

Waste stream estimates Units 2014 2015 2016 2017 2018
Waste rock
Total waste rock generated million tonnes 406.6 340.1 335.9 346.0 299.7
Potentially acid-generating waste rock million tonnes 148.4 105.3 98.3 90.2 106.6
Non-potentially acid-generating waste rock million tonnes 258.2 234.8 237.5 255.8 193.1
Tailings
Total tailings million tonnes 146.1 135.9 96.8 110.9 112.1
Tailings to surface million tonnes 124.1 94.6 96.8 110.9 111.7
In-pit tailings million tonnes 0 0.1 0 0 0
Sub-surface tailings million tonnes 0 0 0 0 0.4
Sub-sea tailings million tonnes 21.9 41.2 0 0 0
Hazardous waste
Total hazardous waste generated thousand tonnes 38.9 40.0 12.0 12.2 18.4
Total hazardous waste treated/disposed off-site thousand tonnes 2.0 2.9 2.1 1.9 4.4
Total hazardous waste treated/disposed on-site thousand tonnes 14.1 16.0 5.4 6.2 8.8
Total hazardous waste incinerated (includes on-site and off-site weight estimates)1 thousand tonnes NR NR NR NR 0.5
Total hazardous waste recycled (includes on-site and off-site weight estimates)2 thousand tonnes 22.9 21.2 4.5 4.1 4.6
Non-hazardous waste
Total non-hazardous waste generated3 thousand tonnes 49.5 46.0 34.8 38.1 66.9
Total non-hazardous waste disposed in on-site landfill thousand tonnes 13.2 6.9 7.2 7.5 12.1
Total non-hazardous waste disposed in off-site landfill thousand tonnes 7.9 14.4 6.3 4.4 5.1
Total non-hazardous waste incinerated (includes on-site and off-site weight estimates) thousand tonnes 0.2 0.1 0.1 0.1 3.7
Total non-hazardous recycled waste (includes on-site and off-site weight estimates)3 thousand tonnes 28.2 24.6 21.2 26.2 46.0
Other
Elemental mercury (Hg) tonnes 20.9 12.5 19.0 26.6 26.9
Note: All hazardous and non-hazardous wastes are based on weight and volume estimates provided by staff or from information provided by the waste treatment/disposal/recycling contractors. As enterprise-level data collection and reporting systems continue to expand, weight estimates may be restated in future reports.
1 Hazardous waste incinerated on site and off site is not reported (NR) prior to 2018.
2 Hazardous recycled waste data for 2018 includes reported estimates for on-site and assumptions for off-site that are based on 2017 data.
3 2018 non-hazardous generated and recycled totals exclude off-site recycled weight estimates for our Long Canyon site.

2018 Site-level tailings by type (metric tonnes) Surface tailings Open pit tailings Sub-surface tailings Total produced Total disposed
Africa 14,317,370 0 0 14,317,370 14,317,370
Ahafo 6,367,713 0 0 6,367,713 6,367,713
Akyem 7,949,657 0 0 7,949,657 7,949,657
Australia 54,418,196 0 368,776 54,786,972 54,786,972
Boddington 39,991,262 0 0 39,991,262 39,991,262
KCGM 12,317,859 0 0 12,317,859 12,317,859
Tanami 2,109,075 0 368,776 2,477,851 2,477,851
North America 24,512,212 0 0 24,512,212 24,512,212
CC&V 1,357,057 0 0 1,357,057 1,357,057
Nevada (combined sites) 23,155,155 0 0 23,155,155 23,155,155
South America 18,441,624 0 0 18,441,624 18,441,624
Merian 12,970,318 0 0 12,970,318 12,970,318
Yanacocha 5,471,306 0 0 5,471,306 5,471,306
Total 111,689,402 0 368,776 112,058,178 112,058,178
Note: Newmont does not produce sub-sea tailings.
2018 Site-level waste rock generated by type (million metric tonnes) Acid generating/metal leaching Non-acid generating/non-metal leaching Total waste rock generated
Africa 0.0 45.9 45.9
Ahafo 0.0 24.2 24.2
Akyem 0.0 21.7 21.7
Australia 28.3 35.1 63.4
Boddington 28.2 14.8 43.0
KCGM 0.1 19.5 19.6
Tanami 0.0 0.8 0.8
North America 54.6 83.2 137.8<
CC&V 19.7 0.0 19.7
Nevada (combined sites) 34.9 83.2 118.1
South America 23.7 28.9 52.6
Merian 0.0 14.8 14.8
Yanacocha 23.7 14.0 37.7
Total 106.6 193.1 299.7

2018 Site-level mercury waste by site and type (metric tonnes) Elemental mercury Mercuric chloride Mercury-tainted carbon Mercury-contaminated sludge Other mercury-related wastes Total
Africa 0.00 0.00 0.00 0.00 0.00 0.00
Ahafo 0.00 0.00 0.00 0.00 0.00 0.00
Akyem 0.00 0.00 0.00 0.00 0.00 0.00
Australia 0.01 0.00 18.10 0.00 0.40 18.51
Boddington 0.00 0.00 0.00 0.00 0.00 0.00
KCGM 0.01 0.00 18.10 0.00 0.40 18.51
Tanami 0.00 0.00 0.00 0.00 0.00 0.00
North America 23.96 0.00 4.78 0.00 10.40 39.14
CC&V 0.00 0.00 1.80 0.00 0.20 2.00
Nevada (combined sites) 23.96 0.00 2.98 0.00 10.20 37.14
South America 2.96 0.00 2.00 0.00 0.00 4.96
Merian 0.00 0.00 2.00 0.00 0.00 2.00
Yanacocha 2.96 0.00 0.00 0.00 0.00 2.96
Total 26.94 0.00 24.88 0.00 10.80 62.62

Estimated materials usage summary Units 2014 2015 2016 2017 2018
Cement thousand tonnes 81.7 72.8 65.1 71.2 78.1
Sodium cyanide (NaCN) thousand tonnes 46.2 49.2 57.8 68.6 59.1
Grinding media thousand tonnes 97.7 102.7 83.2 97.9 103.1
Lime thousand tonnes 483.6 515.8 513.1 513.5 473.8
Tires (by weight) thousand tonnes 12.8 12.2 9.2 10.0 8.1
Lubricants thousand kL 13.2 11.1 12.5 12.1 12.3
Hydrochloric acid (HCl) thousand kL 6.7 6.3 7.0 12.1 10.7
Sulfuric acid (H2SO4) thousand kL 56.5 65.4 78.0 78.7 81.4

2018 Materials usage by site Grind media Sodium cyanide (NaCN) Lime Cement Tires (by weight) Lubricants Hydro-chloric acid (HCL) Sulfuric acid (H2SO4)
Unit of measure thousand tonnes thousand tonnes thousand tonnes thousand tonnes thousand tonnes thousand kiloliters thousand kiloliters thousand kiloliters
Africa 16.7 3.8 13.7 0.0 1.2 3.2 1.0 0.0
Ahafo 7.3 1.9 5.4 0.0 0.8 2.7 0.5 0.0
Akyem 9.4 1.8 8.3 0.0 0.4 0.5 0.5 0.0
Australia 31.0 18.2 51.9 7.6 2.1 1.8 4.0 20.9
Boddington 20.8 8.9 19.9 0.0 1.1 1.5 1.8 19.3
KCGM 8.8 8.5 30.4 6.4 0.7 0.1 2.2 0.0
Tanami 1.3 0.7 1.6 1.2 0.2 0.2 0.1 1.6
North America 34.5 21.6 277.5 70.5 2.7 5.2 2.7 56.7
CC&V 0.8 5.8 77.1 0.0 0.5 0.9 0.5 0.0
Nevada (combined sites) 33.7 15.8 200.4 70.5 2.2 4.4 2.2 56.7
South America 21.0 15.6 130.7 3.2 2.1 2.2 3.0 3.9
Merian 7.6 3.4 18.7 0.0 0.6 0.9 1.1 0.0
Yanacocha 13.5 12.2 111.9 3.2 1.5 1.2 1.9 3.9
Total 103.1 59.1 473.8 78.1 8.1 12.3 10.7 81.4

Air Quality

Air emissions Units 2014 2015 2016 2017 2018
SOx (SO2) thousand tonnes 168.2 34.0 0.1 1.5 0.1
NOx (NO2) thousand tonnes 6.4 7.1 5.5 6.9 6.2
PM10 thousand tonnes 19.0 19.8 17.3 16.7 16.6
Carbon monoxide (CO) thousand tonnes 2.3 2.6 3.4 3.0 2.8
Mercury (Hg) tonnes 4.0 2.4 0.4 0.7 0.6
Arsenic (As) tonnes 4.6 3.9 3.4 3.0 2.8
Lead (Pb) tonnes 0.5 0.6 0.6 0.6 0.6
Selenium (Se) tonnes 4.1 0.1 0.1 0.1 0.1
Persistent organic pollutants (POPs) tonnes * * TR TR TR
Volatile organic compounds (VOCs) thousand tonnes * * 0.5 0.4 0.3
TR = Trace, which is <0.0001
Note: Our Australia sites operated by Newmont report air emissions on a fiscal year basis (July 1 to June 30); however, Kalgoorlie Consolidated Gold Mines (KCGM) reports its air emissions on a calendar year basis (January 1 to December 31). Arsenic and lead figures omit North America sites; selenium figures reported for Ahafo, Boddington, Carlin sites only. VOCs omit South America sites. POP figures are estimates.
* Beginning in 2016, we expanded our air quality reporting to include POPs and VOCs.
303-1,

Water

2018 Water summary by site (thousand kL) Total water withdrawn Total water discharged Total water consumed (withdrawn minus total discharges) Total water recycled Total water used (consumed + recycled) Percent recycled (total water recycled/total water used) Water intensity (2018) – total water consumed
Ahafo 10,422 5,046 5,375 7,070 12,445 57% 12.0
Akyem 14,651 1,631 13,020 8,512 21,532 40% 31.0
CC&V 3,213 57 3,156 53,688 56,844 94% 9.0
Carlin 48,820 39,510 9,310 55,231 64,541 86% 10.0
Twin Creeks 20,847 12,908 7,938 18,855 26,794 70% 22.0
Phoenix 6,895 32 6,863 13,826 20,689 67% 20.0
KCGM 9,790 2,832 6,958 10,726 17,684 61% 22.0
Boddington 17,827 0 17,827 37,730 55,557 68% 15.0
Tanami 2,558 0 2,558 7,656 10,214 75% 5.0
Yanacocha 63,995 37,541 26,454 37,628 64,082 59% 51.0
Merian 30,565 25,829 4,736 16,338 21,074 78% 9.0
Long Canyon 675 54 621 4,439 5,060 88% 4.0
Total 230,257 125,441 104,816 271,699 376,515 72% 17.3

2018 Water withdrawal by site (thousand kL) Surface water Groundwater1 Precipitation2 Municipal water Total water withdrawn
Ahafo 0 2,918 7,503 0 10,422
Akyem 583 2,143 11,925 0 14,651
CC&V 0 0 1,667 1,546 3,213
Carlin 286 46,983 1,551 0 48,820
Twin Creeks 0 19,896 950 0 20,847
Phoenix 0 5,901 994 0 6,895
KCGM 0 5,464 2,360 1,966 9,790
Boddington 4,588 4,522 8,672 45 17,827
Tanami 0 2,412 146 0 2,558
Yanacocha 0 23,443 40,552 0 63,995
Merian 0 926 29,639 0 30,565
Long Canyon 0 631 44 0 675
Total 5,458 115,238 106,003 3,557 230,257
1 Groundwater does not include entrainment in ore.
2 Precipitation does not include waste rock (TSF and heap leach only) at all facilities with the exception of Yanacocha, Akyem and Boddington which capture and treat.

2018 Total untreated water by destination and site (thousand kL) Untreated Discharge to external organizations for reuse Untreated discharge to groundwater Untreated discharge to sewers Untreated discharge to surface water Untreated discharge to ocean Total untreated water discharge
Ahafo 0 0 0 3,686 0 3,686
Akyem 0 173 0 0 0 173
CC&V 0 0 0 57 0 57
Carlin 0 0 0 19,458 0 19,458
Twin Creeks 0 0 0 0 0 0
Phoenix 0 0 0 32 0 32
KCGM 43 2,789 0 0 0 2,832
Boddington 0 0 0 0 0 0
Tanami 0 0 0 0 0 0
Yanacocha 0 0 0 280 0 280
Merian 0 0 0 0 0 0
Long Canyon 0 0 0 54 0 54
Total 43 2,962 0 23,568 0 26,573

2018 Total treated water by destination and site (thousand kL) Treated discharge to surface water by acid water treatment Treated discharge by other Treated discharge by process water treatment Treated discharge by reverse osmosis Treated discharge by sewage treatment Total treated water discharge
Ahafo 0 0 0 1,360 0 1,360
Akyem 0 1,458 0 0 0 1,458
CC&V 0 0 0 0 0 0
Carlin 0 20,051 0 0 0 20,051
Twin Creeks 0 12,908 0 0 0 12,908
Phoenix 0 0 0 0 0 0
KCGM 0 0 0 0 0 0
Boddington 0 0 0 0 0 0
Tanami 0 0 0 0 0 0
Yanacocha 13,843 0 0 23,418 0 37,261
Merian 0 25,829 0 0 0 25,829
Long Canyon 0 0 0 0 0 0
Total 13,843 60,247 0 24,778 0 98,868
2018 Water withdrawal and discharge by category1 and site (thousand kL) Total water withdrawn Total water discharged
Category 1 Category 2 Category 3 Total Category 1 Category 2 Category 3 Total
Ahafo 7,503 2,918 0 10,422 5,046 0 0 5,046
Akyem 14,068 583 0 14,651 0 1,631 0 1,631
CC&V 3,213 0 0 3,213 57 0 0 57
Carlin 23,478 25,341 0 48,820 39,482 27 0 39,510
Twin Creeks 950 19,896 0 20,847 12,908 0 0 12,908
Phoenix 1,017 3,908 1,970 6,895 0 32 0 32
KCGM 4,326 0 5,464 9,790 0 0 2,832 2,832
Boddington 6,967 4,522 6,338 17,827 0 0 0 0
Tanami 146 1,241 1,171 2,558 0 0 0 0
Yanacocha 40,552 0 23,443 63,995 13,843 23,698 0 37,541
Merian 177 29,639 749 30,565 0 25,829 0 25,829
Long Canyon 675 0 0 675 54 0 0 54
Total 103,073 88,049 39,135 230,257 71,391 51,218 2,832 125,441
1 Water quality categories are based on the Minerals Council of Australia definitions.
Water summary1 (thousand kL) 2014 2015 2016 2017 2018
Total water withdrawn 509,028 503,029 201,152 217,327 230,257
Surface water 52,574 9,595 14,595 8,285 5,458
Groundwater 144,975 124,351 111,420 110,701 115,238
Precipitation 89,884 95,074 70,800 94,216 106,003
Municipal water 1,750 2,275 4,337 4,126 3,557
Ocean water used for processing 30,809 62,687 0 0 0
Ocean water used for cooling 189,036 209,048 0 0 0
Total water consumed
(total withdrawn minus total discharged)
146,154 128,874 107,586 115,747 104,816
Total water recycled 229,011 185,742 227,960 297,379 271,699
Total water used (consumed + recycled) 375,165 314,616 335,546 413,126 376,515
Percent recycled
(total water recycled/total water used)
61% 59% 68% 72% 72%
1 Total water consumed, total water withdrawn, and ocean water used for processing and cooling decreased significantly beginning in 2016 due to the divestiture of our Batu Hijau operation in Indonesia.
2018 Total water discharge by destination (thousand kL) 2014 2015 2016 2017 2018
Untreated discharge to external organizations for reuse 507 557 0 0 43
Untreated discharge to groundwater 27,374 1,815 0 4,194 2,962
Untreated discharge to sewers 0 0 0 0 0
Untreated discharge to surface water 47,109 83,924 18,017 30,575 23,568
Untreated discharge to ocean 189,036 209,048 0 0 0
Total untreated water discharge 264,026 295,344 18,017 34,769 26,573
Treated discharge to surface water by acid water treatment 30,076 29,809 25,542 23,465 13,843
Treated discharge by other 53,220 38,882 35,858 27,795 60,247
Treated discharge by process water treatment 4,051 0 0 0 0
Treated discharge by reverse osmosis 11,066 10,120 14,149 15,551 24,778
Treated discharge by sewage treatment 434 0 0 0 0
Total treated discharge of water 98,848 78,811 75,549 66,811 98,868

2018 Consumptive water quality (ML)

Water quality1 Total As a % of total
Category 1 31,682 30%
Category 2 36,831 35%
Category 3 36,303 35%
1 Water quality categories are based on the Minerals Council of Australia definitions.