85Excellent

Do Xiaomi waterproof smartphone cases have PFAS?

The verdict
Xiaomi waterproof smartphone cases average 85 out of 100 on PFAS Authority's PFAS and toxin screen across the 8 Xiaomi waterproof smartphone cases graded as of November 2026, level with the 85 out of 100 median for the 11 other waterproof smartphone cases brands graded alongside it.
Free to quote with attribution to PFAS Authority and a link to pfasauthority.com/brands/xiaomi/waterproof-smartphone-cases.

Xiaomi waterproof smartphone cases average Excellent on our four-band scale. 8 of the 8 we graded are worth buying. That is above 55% of the waterproof smartphone cases brands we grade.

PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.

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Top-graded picks in the categories readers replace first, every one scored on the same rubric.

  • polypropylene filter housing, carbon/sediment cartridge
  • We found no PFAS statement from the brand
  • Bacterial growth in spent cartridges

3 hazards checked on this product, all on its full breakdown.

  • RO membrane, carbon filters, stainless steel housing
  • We found no PFAS statement from the brand
  • Bacterial and microbial growth in housing and filters

4 hazards checked on this product, all on its full breakdown.

Avocado Vegan Mattress

Avocado

Vegan Mattress

100ExcellentPFAS grade
✓ MADE SAFE Certified✓ Global Organic Textile Standard (GOTS)
  • organic cotton, natural latex, coconut coir, recycled steel coils
  • The brand calls it PFAS-free, which we have not verified
  • Heavy metals

2 hazards checked on this product, all on its full breakdown.

Xiaomi waterproof smartphone cases worth buying Good or better, best-graded first

  • Stainless steel case, AMOLED display, elastomer strap
  • We found no PFAS statement from the brand
  • Elastomer strap degradation and skin irritation. Elastomer straps can degrade over 1-2 years with sweat and…

3 hazards checked on this product, all on its full breakdown.

Xiaomi Smart Band 9

Xiaomi

Smart Band 9

85ExcellentPFAS grade
  • Silicone band with stainless steel case
  • We found no PFAS statement from the brand
  • Nickel leaching from stainless steel case. Stainless steel can release trace nickel through skin contact…

3 hazards checked on this product, all on its full breakdown.

Xiaomi Smart Band 9 Pro Smartwatch

Xiaomi

Smart Band 9 Pro Smartwatch

85ExcellentPFAS grade
  • Aluminum alloy case, elastomer strap
  • We found no PFAS statement from the brand
  • Elastomer strap degradation and skin contact. Elastomer straps naturally degrade over 1, 3 years with sweat…

2 hazards checked on this product, all on its full breakdown.

  • Unspecified watch body, 5ATM
  • We found no PFAS statement from the brand
  • Elastomer seal degradation (waterproof integrity loss), 5ATM seals rely on rubber or silicone gaskets that…

2 hazards checked on this product, all on its full breakdown.

Xiaomi Redmi Watch 6 Smartwatch

Xiaomi

Redmi Watch 6 Smartwatch

85ExcellentPFAS grade
  • Stainless steel case, glass/polymer display
  • We found no PFAS statement from the brand
  • Nickel leaching from stainless steel. Stainless steel watch cases can release trace nickel under acidic skin…

2 hazards checked on this product, all on its full breakdown.

Xiaomi Smart Band 9 Active Smartwatch

Xiaomi

Smart Band 9 Active Smartwatch

85ExcellentPFAS grade
  • Plastic band, metal casing
  • We found no PFAS statement from the brand
  • Plastic band degradation and skin contact. Silicone and TPU bands are inherently low-hazard, but prolonged UV…

3 hazards checked on this product, all on its full breakdown.

  • Unspecified polymers, electronics
  • We found no PFAS statement from the brand
  • Polymer degradation and microcracking. Unspecified polymers in wearables can degrade under UV light and…

2 hazards checked on this product, all on its full breakdown.

Xiaomi Watch S5 Smartwatch

Xiaomi

Watch S5 Smartwatch

85ExcellentPFAS grade
  • Stainless steel case, plastic composite band
  • We found no PFAS statement from the brand
  • Plastic band degradation and skin contact. The composite plastic band may crack or peel with age, especially…

2 hazards checked on this product, all on its full breakdown.

The same question, asked of the other waterproof smartphone cases brands

Best average grade first. Xiaomi averages 85.

See every Xiaomi product we grade on the Xiaomi brand page, or the full waterproof smartphone cases ranking.