REPORTING & DISCLOSURE TRACKING OUR PROGRESS DOW | REPORTING & DISCLOSURE | 133 Dow Disclosures – GRI Content Index 303-4 Water discharge The accounting of water discharge-related flows is governed by WERS and includes water that has been treated, meets the appropriate discharge quality, and is subsequently discharged to the environment or hydraulic flows that are transferred to 3rd party for treatment. This water is measured upon discharge at our wastewater treatment facilities or transferred to a third party. All Dow businesses, locations and facilities are required to develop a water discharge accounting methodology that complies with WERS standards. Sources of water that are discharged without treatment such as one pass cooling and cooling tower blowdowns are monitored for quality but may not be quantified. Total water discharge breakdown by area: Source (Megaliters) 2021 2020 2019  Total Water Discharge – All Areas 120000 122000 124000 126000 128000 130000 132000 134000 2021 2020 2019 2018 2017 2016 2015 Megaliters Surface 59,742 59,121 55,386 Groundwater 0 0 0 Seawater 57,569 53,284 60,888 Produced Water 0 0 0 Third-Party Water 15,199 13,196 13,170 Total Water Discharge – All Areas 1 132,510 125,601 129,444 1 Dow has water discharges to categories not included in this table. Total water discharge breakdown by area for sites with water stress: Description (Megaliters) 2021 2020 2019  Surface 965 988 942 Groundwater 0 0 0 Seawater 44,511 40,608 44,367 Produced Water 0 0 0 Third-Party Water 1,460 1,633 1,966 Total Water Discharge – KWSS 46,936 43,229 47,275 A breakdown of total water discharge: Description 2021 (Megaliters) 2020 (Megaliters) 2019  (Megaliters) Fresh water (≤1,000 mg/L Total Dissolved Solids) 73,481 70,683 66,590 Other water (>1,000 mg/L Total Dissolved Solids) 59,029 54,918 62,854