WP-DC20 Waterproof Case for Powershot S1 IS vs Mission 1 Protective Housing: which is safer?

GoPro Mission 1 Protective Housing is the clear pick. Canon WP-DC20 Waterproof Case for Powershot S1 IS carries a failing PFAS grade, and we never recommend buying a failing product.

Canon

WP-DC20 Waterproof Case for Powershot S1 IS

PFAS grade

F 40/100

Overall grade

F 18/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Polycarbonate/urethane case with waterproof seals, coating unspecified

Confidence

45%

PossiblePFAS in waterproof coating

ReportedPolycarbonate structural degradation

PossibleUrethane seal degradation and off-gassing

Why this grade

Our pick

GoPro

Mission 1 Protective Housing

PFAS grade

B 85/100

Overall grade

C 73/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Polycarbonate and silicone housing, lens glass

Confidence

72%

PossiblePolycarbonate stress-cracking and microplastic release

PossibleSilicone gasket degradation

PossibleMold or bacterial growth inside sealed housing

Why this gradeBuy

Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

More waterproof camera & lens cases: see the full ranking