The global water and wastewater treatment chemicals market is expected to experience steady growth over the next decade as governments and industries intensify efforts to address water scarcity, pollution control, and sustainable water management. The market is projected to expand from approximately USD 42.15 billion in 2026 to around USD 66.10 billion by 2036, registering a CAGR of about 4.6%, according to the latest analysis by Future Market Insights (FMI).