#31
Tier 3 — Caution Advised

Sierra Springs

High Microplastic Risk
3.9/10

Expert Summary

Mass Western regional brand offering generic well water that completely lacks advanced recovery mechanics.

How This Score Was Calculated

The PHI Score for Sierra Springs (3.9/10) is a composite of four independently weighted pillars evaluated through third-party lab testing, corporate disclosure analysis, and environmental lifecycle assessments.

30%

Recovery & Performance

25%

Eco-Packaging

25%

Microplastic Testing

20%

Corporate Ethics

Read full methodology

Frequently Asked Questions

Is Sierra Springs a good bottled water?

Sierra Springs is ranked #31 of 50 with a score of 3.9/10. Exercise caution — Mass Western regional brand offering generic well water that completely lacks advanced recovery mechanics.

How was Sierra Springs ranked on BestBottledWater.org?

Sierra Springs received a PHI Score of 3.9/10 across four weighted criteria: Recovery & Performance Testing (30%), Eco-Packaging Metrics (25%), Microplastic Testing (25%), and Corporate Ethics Audit (20%). This placed it at rank #31 out of 50 brands evaluated in the 2026 annual index.

Does Sierra Springs have microplastics?

Yes. Sierra Springs carries a High Microplastic Risk rating from independent testing. This is commonly caused by screw-cap friction shedding (plastic particles shed each time the bottle is opened) and PET bottle wall leaching during warehouse storage and transport, especially when bottles are exposed to heat.

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