Kirkland Signature vs Saratoga Spring Water: which water is healthier?

Updated · Scores from third-party lab reports · How we score

Saratoga Spring Water is the healthier choice, scoring 67/100 versus 63/100 for Kirkland Signature. The biggest differences are packaging material and water source.

Kirkland Signature Purified Water Plastic Bottle

Kirkland Signature

Kirkland Signature Purified Water Plastic Bottle

63
Saratoga Spring Water Glass Bottle

Saratoga Spring Water

Saratoga Spring Water Glass Bottle

67

Side-by-side comparison

Kirkland SignatureSaratoga Spring Water
Purity score63/10067/100
Product comparedKirkland Signature Purified Water Plastic BottleSaratoga Spring Water Glass Bottle
TypeStillStill
Water sourceMunicipal SupplySpring
PackagingPlasticGlass
Microplastics riskHighLow
Lab testedYesYes
PFAS testedYesYes
Contaminants flagged112
pH5.97.82
TDS (minerals)—38.8 ppm
Fluoride0 mg/L0 mg/L

Score breakdown

FactorKirkland SignatureSaratoga Spring Water
Lab report indexed45/4545/45
Contaminants17/500/50
Water source15/2525/25
Mineral preservation17/1717/17
Packaging material2/2222/22
Cap material7/70/7
PFAS testing5/55/5

Each brand is represented by its most popular product. See all products from Kirkland Signature and Saratoga Spring Water.

Frequently asked questions

Which is better, Kirkland Signature or Saratoga Spring Water?

Saratoga Spring Water is the healthier choice, scoring 67/100 versus 63/100 for Kirkland Signature. The biggest differences are packaging material and water source.

Is Kirkland Signature or Saratoga Spring Water better for avoiding microplastics?

Kirkland Signature (plastic) has a high microplastics risk and Saratoga Spring Water (glass) has a low risk, based on packaging material.

Which has more minerals, Kirkland Signature or Saratoga Spring Water?

Total dissolved solids (TDS) is not reported for both products, so check each product page for its mineral list.

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