Ice Mountain vs Kirkland Signature: which water is healthier?

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

Kirkland Signature is the healthier choice, scoring 63/100 versus 59/100 for Ice Mountain. The biggest differences are contaminants.

Ice Mountain Spring Water Plastic Bottle

Ice Mountain

Ice Mountain Spring Water Plastic Bottle

59
Kirkland Signature Purified Water Plastic Bottle

Kirkland Signature

Kirkland Signature Purified Water Plastic Bottle

63

Side-by-side comparison

Ice MountainKirkland Signature
Purity score59/10063/100
Product comparedIce Mountain Spring Water Plastic BottleKirkland Signature Purified Water Plastic Bottle
TypeStillStill
Water sourceSpringMunicipal Supply
PackagingPlasticPlastic
Microplastics riskHighHigh
Lab testedYesYes
PFAS testedYesYes
Contaminants flagged131
pH7.25.9
TDS (minerals)191 ppm—
Fluoride0.2 mg/L0 mg/L

Score breakdown

FactorIce MountainKirkland Signature
Lab report indexed45/4545/45
Contaminants0/5017/50
Water source25/2515/25
Mineral preservation17/1717/17
Packaging material2/222/22
Cap material7/77/7
PFAS testing5/55/5

Each brand is represented by its most popular product. See all products from Ice Mountain and Kirkland Signature.

Frequently asked questions

Which is better, Ice Mountain or Kirkland Signature?

Kirkland Signature is the healthier choice, scoring 63/100 versus 59/100 for Ice Mountain. The biggest differences are contaminants.

Is Ice Mountain or Kirkland Signature better for avoiding microplastics?

Ice Mountain (plastic) has a high microplastics risk and Kirkland Signature (plastic) has a high risk, based on packaging material.

Which has more minerals, Ice Mountain or Kirkland Signature?

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

More comparisons