First Trust Water ETF (FIW US) – Investment PropositionFirst Trust Water ETF (FIW) provides targeted exposure to companies whose revenues are tied to the global water value chain, spanning equipment manufacturers, infrastructure and treatment providers, and regulated utilities across market caps. The fund tracks a rules-based index emphasizing issuers that derive a substantial share of revenue from potable and wastewater activities, seeking a purer play on secular needs such as network rehabilitation, leak ...