Kirkland SignaturePurified Water

Disclosure grade C — Minimal disclosure

This brand discloses only broad measures like TDS or pH. The mineral-by-mineral picture isn't published.

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 Kirkland Signature Purified Water

• Instacart (Costco) →Grocery delivery16.9 fl oz x 40-count via Instacart; no membership required, prices higher than warehouse.
• Costco Same-Day →Grocery deliveryCostco's same-day delivery (Instacart-powered); around $5.99 for the 40-pack in-warehouse.
• Costco search →MarketplaceCostco members; mainly an in-warehouse item — costco.com online mostly sells pallet quantities.
• Amazon (resellers) →MarketplaceThird-party resellers only, typically heavily marked up.

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