Kirkland Signature Water

Kirkland Signature is the private label brand of Costco Wholesale, a major multi-national retailer. The brand was launched in 1992 and named after the city in Washington, USA where Costco's headquarters were located at the time. Kirkland Signature products encompass a wide variety of categories including food, beverages, clothing, and household goods.

Because Kirkland Signature is a private label, the actual manufacturing of products is outsourced to various third-party suppliers. Bottled water under this label is typically sourced and bottled by different regional suppliers depending on where it is sold; for instance, in the United States, Niagra Bottling is a known major supplier. The brand remains entirely owned by Costco Wholesale Corporation, which manages the quality control and distribution through its global warehouse network.