Is there a water ETF?
Yes.
ETFIQ covers 6 water ETFs as of Oct 20, 2026. The largest is PHO at $2.0bn. The cheapest is TBLU at 0.40%.
How much of a water fund is already in the S&P 500 decides how much of it is new exposure. Across these 6 funds the median is 36.3% of the weight. The rest is what you are buying that an index fund does not already hold.
Concentration is the other thing to read. The median water ETF here holds 58.0% of its weight in its top ten positions. That is what a theme fund does: it buys a shortlist, not a market.
ETFIQ files a fund under a theme editorially, from what the fund holds rather than from its name, and every figure on this page is the one its water hub prints.
On ETFIQ today
| Ticker | Fund | Issuer | Net assets | Fee | In the S&P 500 |
|---|---|---|---|---|---|
| PHO | Invesco Water Resources ETF | Invesco | $2.0bn | 0.59% | 61.9% |
| FIW | First Trust Water ETF | First Trust | $1.8bn | 0.50% | 48.8% |
| CGW | Invesco S&P Global Water Index ETF | Invesco | $1.0bn | 0.58% | 27.7% |
| PIO | Invesco Global Water ETF | Invesco | $270m | 0.75% | 39.3% |
| TBLU | Tortoise Global Water ETF | Tortoise | $53m | 0.40% | 33.4% |
| AQWA | Global X Clean Water ETF | Global X | $20m | 0.50% | 25.4% |
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ETFIQ, Is there a water ETF?, data as of Oct 20, 2026. https://etfiq.com/questions/is-there-a-water-etf
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