Get Kirkland Signature Alkaline Water, 1 L, 18-count delivered to you in as fast as 1 hour with Costco same-day delivery or curbside pickup. Kirkland Signature Ionized Alkaline Water, 33.8 fl oz, 18 ct, Purified water with electrolytes added for taste, Ionized to a pH of 9.5, Processed by electrolysis and reverse osmosis, Proprietary mineral blend added to create Kirkland Signature’s pure taste. Bottled using state-of-the-art purification, filtration and reverse osmosis technologies with each bottle undergoing automated digital imaging inspection. Get Kirkland Signature Purified Drinking Water, 16.9 fl oz, 40-count delivered to you in as fast as 1 hour with Costco same-day delivery or curbside pickup. We would like to show you a description here but the site won’t allow us. Sign up for bottled water delivery service for Costco members. Get great tasting purified, spring or artesian water for your home or business today. Get Costco Kirkland Water products you love delivered to you in as fast as 1 hour with Instacart same-day delivery or curbside pickup. Start shopping online now with Instacart to get your favorite Costco products on-demand. Get Kirkland Signature Purified Drinking Water, 1 Gallon, 6 ct delivered to you in as fast as 1 hour with Costco Business Center same-day delivery. While Kirkland Water may be out of stock at Costco warehouses, customers may still be able to purchase it online or through alternative channels. However, availability and pricing may vary, and customers should be aware that third-party sellers may charge higher prices or offer lower quality products. Shop Costco.com's selection of bottled water. Find artesian water, sparkling water and more. Enjoy low warehouse prices on top brands.