{"url":"https://etfiq.com/rankings/themes-cheapest-water","section":"rankings","title":"The cheapest water ETFs | ETFIQ","description":"The cheapest water ETFs, ranked by the annual fee the fund charges, as of Oct 2, 2026. 6 funds from ETFIQ\u2019s own published figures.","as_of":"Oct 2, 2026","structured_data":[{"@type":"ItemList","name":"The cheapest water ETFs","numberOfItems":6,"itemListOrder":"https://schema.org/ItemListOrderDescending","itemListElement":[{"@type":"ListItem","position":1,"name":"TBLU","url":"https://etfiq.com/funds/tblu"},{"@type":"ListItem","position":2,"name":"AQWA","url":"https://etfiq.com/funds/aqwa"},{"@type":"ListItem","position":3,"name":"FIW","url":"https://etfiq.com/funds/fiw"},{"@type":"ListItem","position":4,"name":"CGW","url":"https://etfiq.com/funds/cgw"},{"@type":"ListItem","position":5,"name":"PHO","url":"https://etfiq.com/funds/pho"},{"@type":"ListItem","position":6,"name":"PIO","url":"https://etfiq.com/funds/pio"}]},{"@type":"Dataset","name":"The cheapest water ETFs","description":"The cheapest water ETFs, ranked by the annual fee the fund charges, as of Oct 2, 2026. 6 funds from ETFIQ\u2019s own published figures. A ranking is not a recommendation.","url":"https://etfiq.com/rankings/themes-cheapest-water","dateModified":"2026-10-02","creator":{"@id":"https://etfiq.com/#org"},"license":"https://etfiq.com/license/","isAccessibleForFree":true,"creditText":"ETFIQ (etfiq.com)","publisher":{"@id":"https://etfiq.com/#org"},"inLanguage":"en","creativeWorkStatus":"Published","distribution":[{"@type":"DataDownload","encodingFormat":"application/json","contentUrl":"https://etfiq.com/data/thematic.json"}],"variableMeasured":["Weight overlap with the S&P 500","Active share","Holdings","Top ten share of the fund","Total return","Fee for the differing part","Expense ratio"],"keywords":["exchange-traded funds","ETF","Thematic ETFs","fund data","SEC filings"]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Rankings","item":"https://etfiq.com/rankings/"},{"@type":"ListItem","position":3,"name":"The cheapest water ETFs","item":"https://etfiq.com/rankings/themes-cheapest-water"}]},{"@type":"WebPage","name":"The cheapest water ETFs","description":"The cheapest water ETFs, ranked by the annual fee the fund charges, as of Oct 2, 2026. 6 funds from ETFIQ\u2019s own published figures. A ranking is not a recommendation.","url":"https://etfiq.com/rankings/themes-cheapest-water","dateModified":"2026-10-04","isPartOf":{"@type":"WebSite","name":"ETFIQ","url":"https://etfiq.com"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".lede"]},"publisher":{"@id":"https://etfiq.com/#org"}}],"characters":2630,"truncated":false,"content":"ETFIQ / Rankings / The cheapest water ETFs \n \n As of Oct 2, 2026 . Rebuilt every trading night.\n The cheapest water ETFs\n A fee is one fact and not a verdict on the fund. Where the funds on a theme hold different companies, the cheapest is not even the same bet, and the holdings are on the theme page.\n The cheapest water ETFs, ranked by the annual fee the fund charges, as of Oct 2, 2026. Source: ETFIQ. # Ticker Fund Fee Net assets Weight in S&P 500 companies Total return, 1Y \n 1 TBLU Tortoise Global Water ESG Fund 0.40% $0 not filed \u22124.8% \n 2 AQWA Global X Clean Water ETF 0.50% $20m 19.5% \u22125.4% \n 3 FIW First Trust Water ETF 0.50% $1.7bn 48.1% \u22127.0% \n 4 CGW Invesco S&P Global Water Index ETF 0.58% $1.0bn 25.6% \u22120.3% \n 5 PHO Invesco Water Resources ETF 0.59% $1.9bn 61.3% \u22125.8% \n 6 PIO Invesco Global Water ETF 0.75% $262m 39.1% \u22123.1% \n \n Method\n The 6 of 6 ETFs in the water theme that publish an expense ratio, cheapest first. Across the funds listed here the annual fee runs from 0.4% to 0.8%. A fee is the one number a fund controls and the one a holder pays whatever happens. The ranking is the published field sorted, nothing else: no scoring, no weighting and no view on any fund. Every fund ETFIQ covers in this category is eligible, including funds that have closed, because leaving them out would flatter the category.\n Where to next\n Every water ETF and what it holds The largest water ETFs Where these figures came from\n Fund holdings from SEC Form N-PORT and from the issuers own daily files SEC EDGAR, full-text search of fund filings SEC Form N-PORT, what a fund filed it holds Rule 19a-1, what a distribution notice must say ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.\n A ranking is not a recommendation and no order on this site is an opinion. ETFIQ is an independent publisher, not an adviser. Standards and sources \n Cite this page. ETFIQ, The cheapest water ETFs, ranked by the annual fee the fund charges, data as of Oct 2, 2026. https://etfiq.com/rankings/themes-cheapest-water Free to use with attribution ; the underlying files are at Open data .\n Other forms Plain ETFIQ, The cheapest water ETFs, ranked by the annual fee the fund charges, data as of Oct 2, 2026. https://etfiq.com/rankings/themes-cheapest-water APA ETFIQ. (Oct 2, 2026). The cheapest water ETFs, ranked by the annual fee the fund charges. Retrieved from https://etfiq.com/rankings/themes-cheapest-water Markdown [The cheapest water ETFs, ranked by the annual fee the fund charges (ETFIQ, Oct 2, 2026)](https://etfiq.com/rankings/themes-cheapest-water)","source":"ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.","publisher":{"@id":"https://etfiq.com/#org","name":"ETFIQ","url":"https://etfiq.com"},"license":"https://etfiq.com/license/","citation":"ETFIQ, as of Oct 2, 2026. https://etfiq.com/rankings/themes-cheapest-water"}