Water Drops on Glass

The UV-H2O-Box is a water treatment appliance which uses UV light to treat water for microbiological contamination.

The water box is a hand-cranked water treatment appliance which uses UV light to treat water for microbiological contamination. Turning the crank drives a direct current generator, which supplies electrical power to a germicidal UV lamp inside the water tank. The tank holds 1 gallon of water. Treatment is done one batch at a time. An effective exposure of the germicidal UV light is achieved by turning the crank for one minute.

UV-H2O-Boxes Available Now

Our family water box is a water treatment appliance which uses ultraviolet (UV) light to disinfect water for drinking and cooking. It applies technology which is already proven and widely used in municipal water systems, but scales it down for use by single families.

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UV-H<sub>2</sub>O-Box Model WB-GX

UV-H2O-Box Model WB-GX

  • generator
  • germicidal UV bulb
  • 1 gallon blue high density polyethylene tank
  • Power can be supplied by hand-cranking,
    or from a 110V AC electrical outlet,
    or an automobile 12V DC outlet;
    both adapters are included.
    When external power is used,
    an automatic timer turns off the bulb
    after 1 minute.
$299
UV-H<sub>2</sub>O-Box Model WB-X

UV-H2O-Box Model WB-X

  • germicidal UV bulb
  • 1 gallon blue high density polyethylene tank
  • 12V DC external power is required,
    from a 110V AC electrical outlet,
    or from an automobile 12V DC outlet;
    both adapters are included.
    An automatic timer turns off the bulb
    after 1 minute.
$199
UV-H<sub>2</sub>O-Box Model WB-CERT4

UV-H2O-Box Model WB-CERT4

4-Pack for Community Emergency Response Teams
Each water box has:
  • generator
  • germicidal UV bulb
  • 1 gallon blue high density polyethylene tank
  • Power can be supplied by hand-cranking,
    or from any 12 volt 2 amp direct current power source.
    When external power is used, an automatic timer
    turns off the bulb after about 1 minute.
Accessories may be ordered separately from DayZero or directly from DayZero’s suppliers.
$999

What it Does

The UV-H2O-Box disinfects water from unsafe sources.

The DayZero UV-H2O-Box is an ultraviolet household water treatment appliance which treats water for microbiological pathogens: viruses including Coronavirus, bacteria, and microscopic parasites including Giardia and Cryptosporidium.

In all the models, one minute of treatment disinfects a full tank of water. The treated water may be used immediately. The WB-GX model includes a hand-cranked generator so that it may be used even when external electrical power is not available. Both the WB-GX and WB-X models may also be powered from a household electrical outlet or an automobile’s 12V DC circuit; adapters for both sources are included.

The UV-H2O-Box is designed for use when safe drinking water is not available from municipal water systems. It replaces boiling as a way to render water of questionable quality safe to drink and cook with.

How it Works

The UV-H2O-Box disinfects drinking water using germicidal ultraviolet light (UV-C). Treatment with ultraviolet light is used on an industrial scale in city water systems (for example, Seattle). Our DayZero UV-H2O-Box products apply UV water treatment at a scale for families. Importantly, the models with generators can be used even when the power is out and the lights are off.

UV-H2O-Box Specifications

  • Light source: 14 W germicidal tube lamp
  • Power sources: 24VDC 122 RPM gear motor used as a 12V DC generator by manual cranking at about 60 RPM; AC adapter and automobile cigarette lighter adapter
  • Tank capacity: 1 gallon
  • Empty Weight: 7 lbs (WB-GX); 5 lbs (WB-X)
  • Weight when full: 15 lbs (WB-GX); 13 lbs (WB-X)
  • Dimensions: 17” wide x 12” deep x 8” high including crank (WB-GX); 13” wide x 12” deep x 7.5” high (WB-X)
  • WB-GX and WB-X products include: tank with UV-filtered viewport, lamp, generator and crank (WB-GX only), AC adapter, automobile 12V DC adapter, funnel, silicone rubber inlet stopper, outlet cap and valve, 1 minute sandglass timer, information sheet, canvas storage bag
  • WB-CERT4 product includes 4 of: tank with UV-filtered viewport, lamp, generator and crank, silicone rubber inlet stopper, outlet cap (accessories may be ordered separately; pricelist is here)
  • UV dose: In all DayZero UV-H2O-Box products, exposure of clear water to the germicidal UV bulb for one minute delivers at least 40 mJ/cm2 of UV-C light energy throughout the tank, sufficient to reduce pathogens by 99.99% in the commonly used NSF P231 test protocol. Results from independent lab testing are available here.
  • Automatic shutoff: When using external power, bulb turns off automatically after approximately one minute.
  • Limitation: Like boiling, treatment with the DayZero UV-H2O-Box is not effective against non-biological contaminants such as heavy metals and petroleum products.
  • Manufacturer: DayZero Products Co., Portland, OR