Can you flush contact lenses with a septic tank?
The short answer for contact lenses and a septic tank: trash. Contact lenses are flexible plastics that do not break down; they fragment into microplastics that pass through the tank and into the drain field and groundwater.
Drop used lenses in the trash (many brands offer mail-back recycling).
- Verdict
- Trash — soft plastic that becomes microplastic pollution
- Why
- Contact lenses are flexible plastics that do not break down; they fragment into microplastics that pass through the tank and into the drain field and groundwater.
- Drop used lenses in the trash (many brands offer mail-back recycling).
When in doubt, throw it out — only the three Ps (pee, poo, toilet paper) belong in a septic system.
Check another — What are you thinking of flushing?
Use the Can I Flush This? Septic-Safe Lookup to check any other option, or jump straight to one of these:
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