Kirkland Signature is a product of Costco Wholesale Corporation. This time we have tested 3 Kirkland Signature water bottles:

  • Kirkland Signature Purified Water
  • Kirkland Signature Alkaline Water 
  • Kirkland Signature Sparkling Water

Kirkland Signature Purified Water

Kirkland Signature purified water comes with minerals added for taste.

The water is processed by advanced filtration, ozone, and reverse osmosis technologies. You can buy Kirkland plastic bottled water from Costco wholesale stores.

Kirkland Signature Water Test
Kirkland Signature Water Test

According to the bottle information, the ingredients in the water are:

  • Purified Water
  • Potassium Bicarbonate
  • Sodium Bicarbonate
  • Calcium Citrate
  • Sodium Chloride
  • Magnesium Oxide

Kirkland Signature Water Test Results

Kirkland Signature Water test – pH and TDS

When we tested the Kirkland Signature purified water we found out that the TDS content was 26 ppm. According to the TDS results chart, Kirkland purified water is considered micro-filtered and distilled water. 

The pH test result was 8, the watercolor turned to dark green color. That means Kirkland Signature purified water is alkaline water.

Kirkland Signature Water Test Results
Kirkland Signature Water Test Results

Barcode: 096619507313

Kirkland Signature Alkaline Water

Kirkland Signature ionized alkaline water comes with electrolytes added for taste.  It is processed by reverse osmosis. The pH balance at the time of bottling was 9.5 +

Kirkland Signature Alkaline Water Test
Kirkland Signature Alkaline Water Test

NUTRITION FACTS

About 3 Servings per container: 1: Serving size 12 fl oz (355 ml) 

Amount Per Serving

  • Calories 0
  • Total Fat 0g – 0%
  • Sodium 0gm- 0%
  • Total Carbohydrate 0g – 0%
  • Protein 0g – 0%
  • Calcium – 4%

The % Daily Value tells you how much nutrient in a serving of food contributes to a daily diet 2,000 calories a day used for general nutrition advice.

INGREDIENTS

  • Purified water
  • <1% Calcium chloride
  • Magnesium chloride
  • Potassium chloride

Kirkland Signature Alkaline Water Test Results

Kirkland Signature Alkaline Water Tests TDS and pH

The Kirkland Signature alkaline water test showed us, that the TDS content in this purified water was approximately 40 ppm. 

Kirkland Signature Alkaline Water Test Results
Kirkland Signature Alkaline Water Test Results

The pH balance in the water was 10. The pH value table tells us, that Kirkland alkaline water is alkaline. 

Barcode: 096619194063

Kirkland Signature Sparkling Water

Kirkland Signature sparkling mineral water is carbonated water, a product of Italy.

Kirkland Signature Sparkling Water Test
Kirkland Signature Sparkling Water Test

NUTRITION FACTS

Servings: 1: Serving size 1 bottle (500 ml) 

Amount Per Serving

  • Calories 0
  • Total Fat 0g – 0%
  • Saturated Fat 0g – 0%
  • Sodium 10gm- 0%
  • Total Carbohydrate 0g – 0%
  • Protein 0g – 0%
  • Calcium – 4%

INGREDIENTS

  • Mineral water
  • Carbon dioxide
  • Total Dissolved Solids 330 mg/L with carbonation added

Kirkland Signature Sparkling Water Test Results

Kirkland Signature Sparkling Water Tests – TDS and pH

The Kirkland Signature sparkling water test showed us, that the TDS content in the sparkling water was approximately 200 ppm. That means this  Kirkland sparkling is hard mineral water.

The pH balance in the water was 5.5. The pH value table tells us, that Kirkland Signature Italian sparkling water is acidic.

Kirkland Signature Sparkling Water Test Results
Kirkland Signature Sparkling Water Test Results

Barcode: 096619401970

DISTRIBUTED BY: Costco Wholesale Corporation, P.O Box 34535 Seattle, WA 98124-1535 USA 1-800-774-2678

www.costco.com

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