Dow Water & Process Solutions April, 2011

Who We Are Founded in 1897 by Herbert H. Dow in Midland, Michigan Supplies a broad range of products and services to customers in around 160 countries More than 5,000 products manufactured at 188 sites in 35 countries Employs 50,000 employees worldwide On April 1, 2009, Dow acquired Rohm and Haas with 15,000 employees

Our Vision To be the most profitable and respected science-driven chemical company in the world Our Mission To passionately innovate what is essential to human progress by providing sustainable solutions to our customers

Built Upon the Strengths of Our Combined Organizations Operational excellence Global reach Technology innovation Specialty and electronics chemicals Market focus Application technology DOW RESTRICTED - For Internal Use Only 4

Dow’s Operating Segments Advanced Health Performance Basic Coating Materials Electronic Materials Specialty Materials Building & Construction 5

The global leader in sustainable separation and purification technology, Dow Water & Process Solutions is making a clear impact in the world.

DW&PS Metrics Processed over 15 trillion gallons of clean water since 1985  Processes enough water to meet the annual needs of the total U.S. population (327 million people @ 64 gallons a day)    Processes enough water to equal half of the flow rate of Niagara Falls Processes 15 million gallons of clean water a minute       Annually processes 2,700X the total rainfall of Brazil      Processes enough water to fill 21 Olympic pools a minute (1) Europe, Middle East, Africa. 7

Dow Water & Process Solutions Market Position Innovation leader in reverse osmosis and ion exchange resin technologies Only manufacturer today offering a full portfolio of water treatment technologies Technologies process 15 million gallons of clean water a minute across the globe Manufacturing 1,900 Employees 11 Plants State-of-the-art R&D centers in Minnesota USA, Michigan USA, Pennsylvania USA, China, Spain, Brazil, Germany, Saudi Arabia

Dow Water & Process Solutions Impact Sites

THE WATER-ENERGY NEXUS Addressing the World’s Most Pressing Problems with “Clear Impact” Initiatives THE WATER-ENERGY NEXUS The future of water is energy; the future of energy is water. Dow Water & Process Solutions is leading the development of sustainable technologies that integrate water and energy requirements. SUSTAINABLE HEALTH & HUMAN PROGRESS Dow Water & Process Solutions is committed to improving the quality of life today and for future generations through research, development and thought-leadership efforts THE FUTURE OF INFRASTRUCTURE Dow Water & Process Solutions leverages market-leading solutions to remedy the strains created by an increasing global population on already aging infrastructures Dow Water & Process Solutions is delivering a clear impact: clearly sustainable, clearly an innovator, clearly a leader

Global Strategy for Product and Solutions Leadership in Component Space for IX, RO and UF • Pursue growth in key geographies • Establish a world- class position in UF • Build a strong position in waste water market • Build an ‘invest for growth’ Ion Exchange business • Maintain leadership position in desalination

Water and Process Solutions Technologies DOW FILMTEC™ RO Elements DOW™ EDI Modules AMBER™ Ion Exchange Resin DOW™ Membrane Bioreactor Modules DOW™ Ultrafiltration Modules DOWEX™ Ion Exchange Resin ADSORBSIA™ Media The most complete portfolio in the industry today— and a global presence second to none.

Participation in the Water Market ~$50 B 75% Equipment 25% Components ~$500 B 11% Construction 65% Utilities 9% Delivery 10% Treatment Technology 5% Other ~$12 B Established presence Growing presence $2.5B Media Filtration $2.0B Carbon & Absorbents $2.5B Disinfection $2.3B Treatment Chemicals $1.2B Ion Exchange/ Electrodeionization $1.5B Membrane Filtration Only treatment component provider offering full portfolio of reverse osmosis membranes, ultrafiltration, electrodeionization, & ion exchange resins

Enabling Components Primary Loop (Roughing Stage) Pre-treatment System 2B3T System (UPCORE* System) OPTIONAL IX Pre-treatment System Single Pass RO + Working Mixed Bed Storage Tank Storage Tank Storage Tank Raw Water Double Pass RO Multi Media Filter or UF Polishing Mixed Bed Secondary Loop (Polishing Stage) Single Pass RO + CDI or EDI OPTIONAL UV Final Polisher UF UF EDI UF Reclaim (Recovery) System Storage Tank Point of Use Discharge

Supporting the Market You Serve CATALYSIS & CHEMICAL PROCESSING FOOD & BEVERAGE POWER GENERATION MINING & HYDROMETALLURGY INDUSTRIAL WATER Pharmaceutical MUNICIPAL & DESALINATION RESIDENTIAL & COMMERICIAL WASTEWATER & REUSE

World Class Installations/Implementations ISRAEL – Soreq: World’s largest desalination plant ISRAEL – Ashkelon: Provides up to 50 percent of Israel’s clean water supply CHINA – Beijing: Three water treatment facilities, helping to reach a wastewater reuse rate of 50 percent. AUSTRALIA – Perth: Largest desalination facility in the Southern Hemisphere, providing up to 15 percent of Australia’s clean water supply USA – Tampa Bay: Seawater desalination plant is largest of its kind in US and produces 25 million gallons of potable water per day

Partnering for Success Significant investment in R&D and technical service Committed to listening, collaborating and accelerating innovation Unrivalled technical, process and application expertise and support around the globe Attuned to distinct geographic and market segment needs Our ambitions: Enabling the next generation of water and process innovation Helping you differentiate your business

World-class solutions, worldwide impact.