Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 67

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 67
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 To address this complexity, we adopt a catchment-level approach to developing potential solutions and managing our operational risks and impacts. We use 2030 water stress as determined by the World Resource Institute (WRI) to identify operational catchments of most concern. Group water risk profile (percentage of managed operations 1 )

| Water resourceIs there enough water available for environment needs, communityneeds and our operational use?                                      |     | Our aluminium operations in Gladstone, Queensland, Australia, aresupplied with water from Awoonga Dam. Water restrictions could beimposed on the supply in the event of a persistent drought. The waterresource risk for these operations is assessed as high.                                                                                                                                                          |
| Water quality and quantityDoes the way we manage water on site, or discharge excess water,cause environmental impacts or operational constraints? |     | Our ilmenite mine near Havre-Saint-Pierre (HSP), in Quebec, Canada issurrounded by ecologically and socially significant lakes and water features.The quality and quantity risk for HSP mine is assessed as high and excesswater from the mine needs to be carefully managed. To ensure water isreleased to the environment at a suitable quality, we are working on a multi-year water management improvement project. |
| DewateringDoes the removal of water from the operational areas of our sitesimpact regional aquifers or our mine plans?                            |     | Impacts associated with dewatering and water supply activities inthe Pilbara, Western Australia, Australia are recognised as a veryhigh risk for our business. Returning water to the aquifers impactedby our mining activities in a controlled manner is the focus of anumber of ongoing studies. We are also continuing to work withTraditional Owners on water management.                                           |
| Long-term obligationsDo our operational activities generate long-term or ongoingobligations related to water?                                     |     | We may sometimes generate impacts that we are required to manageover the long term, such as post-closure pit lakes in the Pilbara, orpotential seepage from our waste rock or tailings facilities in ouraluminium and copper sites. Our systems and standards aim to ensurethat risks are identified early and managed appropriately andresponsibly throughout the asset life cycle.                                    |

| l | Not applicable | l | Low risk | l | Moderate risk | l | High risk | l | Very high risk |

1. Due to rounding, the sum may not total 100%. To manage our water impacts, we first need to understand the specific risks at more than 50