Open WaterStill Water

Disclosure grade D — No disclosure

This brand lists ingredients at most — no concentrations. You cannot compare what you cannot see; the blanks below are the point.

Character

Bands follow the water-sommelier convention (hardness = Ca×2.5 + Mg×4, as CaCO₃; “source protection” is the nitrate measure that world calls virginality) — computed from the values below, never asserted separately.

Where to order

Ways to get Open Water Still Water

• Open Water shop →Brand directOfficial DTC store; 16 oz aluminum bottles sold by the case (still water includes electrolytes).
• Open Water shop (750 mL) →Brand direct750 mL resealable aluminum bottles, 12-pack case; multi-case bundles discounted.
• Amazon →MarketplaceOfficial listings in case packs; confirm still vs sparkling variant before ordering.
• Instacart →Grocery deliveryCarried at Whole Foods and select grocers; availability varies by zip.

h2know doesn’t sell or ship water — we route you to sellers we’ve verified carry it (links checked 2026-09-11). Prices and availability change; none of these links affect our grades, rankings, or quiz results. Currently none are paid placements or affiliate links; if that ever changes we’ll disclose it right here.