E3-4 Water Consumption Metrics

Metrics Definitions and Methodology

[E3-4.28e] [GRI 303-3] [GRI 303-4] [GRI 303-5] [MDR-M.77a, 77b]

[E3-4.28a] [MDR-M.77a, 77b] All water data is derived from site-specific information based on own measurements, third-party measurements, and invoices, calculations, and estimations. Measurements are used, but if not available, data is calculated. If measurements are not available, data is calculated, e.g., based on a water balance approach or based on pump specifications and running hours. If neither measurements nor calculations are available, water data is estimated. Assumptions related to water metrics are about fixed factors for distribution within a network, fixed pump specifications, or other use of fixed factors, in particular for calculating water discharges. The main limitation for water data relates to the unavailability of dedicated meters for each water stream. The measurement of all metrics below is not validated by an external body other than the assurance provider. Total water consumption in cubic meters (m³) is calculated as the total water withdrawal (see E3-3.4 AR 32), minus the total water discharge (see E3-3.4 AR 32).

[E3-4.28b] [MDR-M.77a, 77c] thereof water consumed in areas at water risk, including areas of high water stress (m³) is the total water consumption (see E3-4.28a) of sites located in areas at water risk. Areas at water risk are determined based on the Water Stress Index from Verisk Maplecroft, which measures total water use in relation to total annual available flow.

[E3-4.28c] [MDR-M.77a, 77c] Total water recycled and reused in cubic meters (m³) is calculated and reported at site level. The value for OMV is obtained by adding up the respective data reported from all the operational sites.

[E3-4.29] [MDR-M.77a, 77c] The water intensity ratio is calculated as total water consumption in OMV’s own operations in cubic meters divided by the net revenue in EUR mn.

[E3-3.4 AR 32] [MDR-M.77a, 77c] Total water withdrawal is calculated as the sum of water withdrawal from all sources including freshwater, non-freshwater, and produced water. Rainwater and recycled water are excluded from the total water withdrawal because they were not deliberately withdrawn from nature for OMV’s needs.

• Freshwater withdrawal consists of the following components: groundwater withdrawal (fresh), surface water withdrawal (fresh), freshwater withdrawal from public supply, and freshwater withdrawal from other sources (rainwater used, recycling).
• Non-freshwater withdrawal consists of the following components: groundwater withdrawal (non-freshwater), seawater withdrawal, and non-freshwater withdrawal from other sources (recycling).Total water withdrawn in areas at water risk, including areas of high-water stress, is the total water withdrawal of sites located in areas at water risk.
• Freshwater is defined as water with ≤1,000 mg/l total dissolved solids
• Non-freshwater is defined as water with >1,000 mg/l total dissolved solids
• Surface water is defined as any water withdrawn from surface water bodies (including water from wetlands, lakes, ponds, streams, and rivers, as well as seas and oceans) into the boundaries of the reporting organization for any use over the course of the reporting period.
• Groundwater is defined as any water withdrawn from groundwater bodies into the boundaries of the reporting organization for any use over the course of the reporting period
• Water from public supply systems is defined as any water withdrawn from public supply systems (municipal water supplies) or other water utilities into the boundaries of the reporting organization for any use over the course of the reporting period.
• Once-through cooling water is defined as water from any source used for once-through cooling purposes.

[E3-3.4 AR 32] [MDR-M.77a, 77c] Total water discharge is calculated as the sum of water discharges to any of the destinations listed below.

• Water discharge destinations include freshwater destinations, non-freshwater destinations, and other destinations.
• Freshwater destinations consist of groundwater aquifers (fresh) and fresh surface water bodies.
• Non-freshwater destinations consist of groundwater aquifers (non-fresh), non-fresh surface water bodies, and seawater.
• Other destinations consist of offsite water treatment facilities (third party), beneficiaries or other users (third party), and evaporation ponds.

[E3-3.4 AR 32] [MDR-M.77a, 77c] Water discharged by destination to all areas with water stress is the total water discharged from sites located in areas at water risk.

[Voluntary] [MDR-M.77a, 77c] Water discharge – quality is calculated as hydrocarbons (oil) discharged, as defined below.

Hydrocarbons (oil) discharged is calculated as the quantity of hydrocarbon discharges through wastewater effluents, according to Ipieca E9 standards. This metric measures the quantities of hydrocarbons discharged into a water environment, whether inland water or to the sea. The scope of this indicator includes the quantity of hydrocarbons discharged in wastewater as process effluent from facilities, such as process water, cooling water, oil-based mud and cutting losses, boiler blow-down water, and surface run-off water. For refining and other oil and gas processing facilities, it refers to the quantity of hydrocarbons in discharged process wastewater and stormwater. Inland discharges to drainage structures that connect to waterways are also included. The following are excluded from this metric: oil discharged in produced water (ENV_90d); hydrocarbons discharged by wastewater disposal injection in reservoirs; spills, including hydrocarbons, chemicals, and/or oil-based drilling fluids and cuttings; and spills of drilling and production chemicals.

[Voluntary] [MDR-M.77a, 77c] Produced water is calculated as the water that is brought to the surface during the production of hydrocarbons, including formation water, flow-back water, and condensation water (Source: Ipieca/IOGP).

• Produced water generated is calculated as the water that is brought to the surface during the production of hydrocarbons including formation water, flow-back water, and condensation water.
• Produced water injected is calculated as the sum of the produced water injected for Enhanced Oil Recovery (EOR) or pressure maintenance, and produced water injected for disposal. Produced water refers to water that enters the organization’s boundary as a result of the extraction, processing, or use of any raw material, and is used for injection for EOR or pressure maintenance. EOR refers to the recovery of oil by methods beyond the primary stage of oil production, defined as the production of crude oil from reservoirs through processes taken to increase the primary reservoir drive. These processes may include pressure maintenance, injection of displacing fluids, or other methods such as thermal techniques. EOR techniques aim to increase cumulative oil production as much as possible. Additionally, produced water injected for disposal refers to water that enters the organization’s boundary as a result of the extraction, processing, or use of any raw material, and is injected into other reservoirs or geological formations for disposal purposes.
• Produced water discharged is calculated as the produced water sent to lined evaporation pits or discharged for diverse operations.