Maintenance Guides / Plumbing & Water

Sanitize RO storage tank

Difficulty: moderateTime: 30 minsEst. Cost: $5 - $15

Why it matters

RO tanks develop biofilm and bacterial colonies; annual sanitization prevents contamination.

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How to do it

  • 1

    Shut off the RO system at the valve.

  • 2

    Empty the storage tank via drain valve.

  • 3

    Prepare dilute bleach solution per manufacturer guidance.

  • 4

    Fill tank with sanitizing solution.

  • 5

    Let sit in tank for 12 hours.

  • 6

    Drain tank completely and flush 3-4 cycles.