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What Water Is the Same as Kirkland Water?

5 min read

According to research from 2025, a significant portion of bottled water sold in the U.S., including some popular brands, is sourced from municipal tap water. A common question among consumers is, “What water is the same as Kirkland water?” The answer reveals a practice common among large retailers, where a third-party manufacturer produces products under a store's private label.

Quick Summary

Kirkland Signature bottled water is manufactured by Niagara Bottling, a major private-label water producer in the United States. This means you can find functionally identical water under other store brands also supplied by Niagara. While the source may vary (including municipal supplies), the water is purified using similar methods, including reverse osmosis.

Key Points

  • Manufacturer Identity: Kirkland Signature bottled water is produced by Niagara Bottling, a major private-label water manufacturer.

  • Equivalent Brands: The same water, with minor variations, can be found under different store brand labels supplied by Niagara Bottling, such as those at Kroger and 7-Eleven.

  • Purification Method: Kirkland water is purified through microfiltration, reverse osmosis, and ozone disinfection, with minerals added back for taste.

  • Sourcing: Niagara Bottling uses a variety of water sources, including municipal tap water and wells, depending on the bottling location.

  • Primary Difference: The main distinction between Kirkland water and other Niagara-bottled products is the label, the price point, and the bottle design, not the core water itself.

  • Bottle Design: Kirkland's famously flimsy bottles are an intentional feature by Niagara to use less plastic and reduce production costs.

In This Article

The Company Behind Kirkland Water: Niagara Bottling

Many consumers are surprised to learn that Costco, the parent company of the Kirkland Signature brand, does not actually bottle its own water. Instead, it contracts with a large-scale third-party manufacturer, Niagara Bottling, LLC. Based in California, Niagara Bottling is a prominent figure in the private-label bottled water market, supplying numerous retailers across the United States. This business model allows retailers like Costco to offer high-quality products at a competitive price by leveraging an external manufacturer's infrastructure and scale.

Niagara Bottling's Process and Sourcing

Niagara Bottling sources its water from a variety of locations, including both municipal water supplies and protected wells or springs. Regardless of the initial source, the water undergoes a multi-step purification process to ensure consistency and quality. This process typically includes microfiltration, reverse osmosis, and ozone disinfection. After purification, a proprietary blend of minerals is often added back for a clean, refreshing taste. This proprietary mineral blend is what differentiates Niagara's purified water from basic distilled water and gives it a specific flavor profile. This process is applied to the water bottled for Kirkland Signature, ensuring it meets specific quality and taste standards defined by Costco.

Other Brands Offering Similar Water

Given Niagara Bottling's extensive network of clients, Kirkland water is not a unique product. Consumers can find functionally the same purified and mineral-enhanced water under various other store brands. While exact sourcing and minor mineral variations might exist due to regional bottling plants, the core purification process and taste profile remain consistent. Shoppers can look for Niagara-bottled products at other major retailers, though they will be branded differently.

Niagara-Bottled Water at Other Stores

  • Kroger: The supermarket chain Kroger is known to carry products also supplied by Niagara Bottling. Their private-label water may be a close alternative to Kirkland water.
  • 7-Eleven: Convenience store giant 7-Eleven is another retailer that sources from Niagara Bottling, providing another potential match for consumers.
  • The Home Depot and Lowe's: Surprisingly, even hardware stores like Home Depot and Lowe's, which sell bottled water, receive their supply from Niagara Bottling.

Comparison of Kirkland and Niagara Bottled Water

Feature Kirkland Signature Purified Drinking Water Niagara Purified Drinking Water (Store Brands)
Manufacturer Niagara Bottling, LLC Niagara Bottling, LLC
Source Municipal water and wells, varying by region Municipal water and wells, varying by region
Purification Process Multi-stage filtration, reverse osmosis, and ozone disinfection Multi-stage filtration, reverse osmosis, and ozone disinfection
Added Minerals Yes, a proprietary blend is added for taste Yes, a standardized mineral blend is added for taste
Primary Difference The label, price point, and bottle design The label, price point, and bottle design
Quality Standards Adheres to high-quality standards set by both Costco and Niagara Adheres to quality standards set by the specific retailer and Niagara

Is Kirkland Water Better Than Other Purified Waters?

Kirkland Signature water is not inherently better than other purified bottled waters. Its perception of value is largely driven by its low price at Costco, rather than a superior purification process. The added mineral blends are primarily for taste enhancement and do not offer significant nutritional benefits. While Niagara Bottling prides itself on high standards, many other brands, like Aquafina or Dasani, also use multi-step purification processes, including reverse osmosis, and source from municipal water. The primary differentiators are often the specific blend of minerals added for flavor and the price point. A notable characteristic some consumers dislike about Kirkland water is the flimsy bottle, which is a conscious design choice by Niagara to reduce plastic and lower costs.

Conclusion: The Secret is in the Manufacturer

The mystery behind what water is the same as Kirkland water is revealed by identifying its manufacturer: Niagara Bottling. This California-based company produces bottled water for a multitude of retailers, not just Costco, using a consistent purification and mineral-blending process. This means that while the labels and bottle designs change, the contents often remain functionally identical across different store brands. For consumers seeking a similar product, checking the labels for brands supplied by Niagara Bottling at stores like Kroger or 7-Eleven can provide an alternative. Ultimately, the choice between Kirkland water and its equivalents boils down to convenience, price, and personal preference regarding the bottle's design.

Visit Niagara Bottling to learn more about their products and processes.

What Water is the Same as Kirkland Water?

Can you buy Niagara water at a regular store?

Yes, Niagara Bottling supplies numerous retailers besides Costco. You can find their products, often under a private-label brand, at stores like Kroger, 7-Eleven, and even The Home Depot.

Is Kirkland water purified or spring water?

Kirkland Signature bottled water is specifically purified drinking water. It is sourced from various locations, including municipal supplies, and undergoes a rigorous purification process, including reverse osmosis. However, Costco Canada has also sold Kirkland Signature Natural Spring Water, which is a different product.

What does reverse osmosis mean for my water?

Reverse osmosis is an advanced purification method that forces water through a semipermeable membrane to remove dissolved salts, minerals, and other contaminants. This process is a key step in creating the pure taste of Kirkland water and other Niagara-bottled products.

Does Kirkland water taste different from other purified waters?

The taste can vary slightly depending on the specific mineral blend added back after purification, which is often unique to each brand's formula. However, the fundamental purification process used by Niagara is consistent, resulting in a generally clean and similar taste profile across its products.

Why are Kirkland water bottles so thin?

Niagara Bottling designs its bottles to be as lightweight and environmentally friendly as possible. The thin plastic reduces the amount of material used, lowering both production costs and environmental impact, though some consumers find them flimsy.

Does Kirkland add minerals to its water?

Yes, after the purification process, a proprietary blend of food-grade minerals is added back to Kirkland water solely for taste. These minerals do not provide nutritional value.

How does Costco keep Kirkland water so affordable?

Costco maintains low prices by purchasing directly from a large-scale manufacturer like Niagara Bottling and distributing it efficiently through its warehouse network. The massive volume of sales allows for significant cost savings that are passed on to the customer.

Is Kirkland water from a tap source?

Some of the water bottled by Niagara for Kirkland comes from municipal (tap) sources, while other sources include wells and springs. The key is the rigorous purification process it undergoes, which removes contaminants before bottling.

Frequently Asked Questions

Kirkland bottled water is manufactured by Niagara Bottling. Other bottled water brands also produced by Niagara, such as store brands for Kroger and 7-Eleven, are essentially the same product.

Costco's Kirkland water is made by Niagara Bottling, a large, family-owned bottled water company based in California.

Yes, Niagara Bottling, which manufactures Kirkland water, sources its water from a variety of places, including municipal water supplies, springs, and wells. However, the water is purified using microfiltration and reverse osmosis to remove contaminants.

Kirkland water is considered good quality for its price point. It undergoes a rigorous purification process and has a clean taste, but it is not necessarily superior to other similarly purified bottled waters on the market.

The most common version of Kirkland bottled water sold at Costco is purified drinking water. It goes through a multi-stage purification process, including reverse osmosis.

Yes, Niagara Bottling produces private-label bottled water for a variety of retailers. Besides Kirkland, they supply stores like Kroger, 7-Eleven, and some hardware stores like The Home Depot.

While the core purification process is the same, there can be slight variations in taste due to the specific mineral blend added back to the water. However, these differences are generally minor for purified drinking water products.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.