1.Introduction and Scope1
1.1.Market Definition and Boundaries2
1.2.Technology Taxonomy (RO, UV, UF, GAC, Electrocoagulation, Photocatalysis)4
1.3.Geographic Scope and Data Currency6
2.Research Methodology8
2.1.Primary Data Sources and Survey Design8
2.2.Secondary Data Sources and Citation Grounding10
2.3.Forecast Model Architecture and CAGR Derivation12
3.Executive Summary14
3.1.Headline Triple: USD 29.6B (2025) → USD 48.7B (2033) at 6.4% CAGR14
3.2.Top Five Strategic Findings16
3.3.Contrarian Read: Residential POU Deceleration17