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waterBOB by waterBOB
Water filters

waterBOB

waterBOB

Bathtub bladder that holds up to 100 gallons of tap water filled before a storm.

Where to buy in

What you get

A food-grade plastic bladder that lies in a bathtub and fills from the faucet. It holds up to 100 gallons though the maker notes most tubs hold 60 to 70. A pump dispenses the water.

  • Fill in bathtub before a storm
  • Pump for dispensing
  • Most tubs hold 60-70 gallons

Pros and cons of the waterBOB

Pros

  • Holds up to 100 gallons depending on the tub.
  • Includes a pump for dispensing.
  • Picked by Wirecutter.

Cons

  • Works only when filled before the water goes off so it needs warning time.
  • It takes over the bathtub for as long as it is full.

Specs

Type
bathtub water bladder
Capacity
up to 100 gallons

Why it scores 8.4

8.4/10

Shortlist score. How it is calculated

Emergency features

  • Removes bacteria and protozoa
  • Also removes or kills viruses
  • Filter life or capacity listed by the maker
  • Tested to a named standard
  • Works without power

Tester picks

Search demand

Number 4 of 20 on this shortlist for Google searches by model name.

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