The HOG water tank, three-quarter view

50 gallons.
9½ inches deep.

The slim, modular water tank that stands flat against your wall. Catch the rain or keep an emergency supply, and give up almost no space to do it.

Configure your HOG Check your rebate
Capacity
50 gal
Depth
9½ in
Weight full
458 lb
Designed / made
Australia / California

9½ IN Depth

Slim enough for the side passage.

Fifty gallons in a tank 9½ inches deep. It fits the narrow strip beside the house, along a fence line or under a deck, where a round barrel never could.

M10 Wall fixing

Held by one stainless plate.

A threaded rod runs through a sealed tunnel in the middle of the tank, never through the water, into a steel channel on your wall. The ground takes the weight. The wall just keeps it upright.

1 IN NPT Ports

Threaded top and bottom.

Three stainless threaded inserts, one at the top and two at the bottom. A plastic bung seals the second top port. Screw HOGs together, add a vent, fit a tap. Saw off the top nub and the first HOG becomes the inlet, behind a 100-mesh stainless screen.

×N Modular

Upright, on its back or on its side.

Water runs freely from top to bottom whichever of the three ways a HOG lies. No other tank can do that. Stand a row against a wall, lay them under a deck, and link as many as your roof can fill.

  1. Upright
  2. On back
  3. On side

See what you get back

458 pounds when full. It isn't going anywhere.

A full HOG stands on a footprint smaller than a doormat, held to the wall and resting on solid ground. It won't tip, roll or creep across the garage floor.

8.34 lb / gal×50 gal+41 lb tank=458 lb

One tank. Three jobs.

Every HOG is the same slim, food-grade tank. What goes in it decides the job, so each system does just one: drinking water for emergencies, or rainwater or greywater for the garden.

50 gallons of emergency water. Without 378 plastic bottles.

An eHOG is filled once with drinking water and sealed. It has no inlet, so rain never gets in, and a tap at the base draws the water off when you need it. Bottled water has to be bought, stacked and rotated.

The bottle way27 × 14
378bottles of 16.9 oz
The eHOG wayFront view
1HOG, 50 gal, 9½ in deep
Nearly 16 casesThat's how many 24-packs of bottles it takes to hold 50 gallons.
SealedFilled once with drinking water, then closed up. Keep it separate from any rain or greywater system.
A tap at the baseEvery eHOG system comes with at least one hose tap, ready for when the mains isn't.

Built like equipment.

Most rain barrels are a plastic drum you hide behind the shed. HOG is made to be seen, moved and kept for a long time, whatever water it holds.

Food-grade

Medium-density polyethylene that meets FDA standards for food contact.

BPA-free

No bisphenol A and nothing that builds up in the water you store.

Stable against a wall

A stainless wall plate keeps it upright. The ground carries the load.

Doesn't roll

Flat sides and a flat base. Nothing to chock, nothing to chase.

Leaves the garage alone

9½ inches deep. Park right next to it and still open the car door.

Built for decades

A 20-year-plus design life, UV8 stabilized, and made to unbolt and move house with you.

Your water district wants to help pay for it.

California water agencies pay rebates on rain barrels and cisterns. Tell us who supplies your water and how many HOGs you want. We'll show what comes back and exactly how to claim it.

Or pick your water supplier
How many HOGs
2
Rebate estimateMarin Water
  • 2 HOGs100 gal
  • Weight when full916 lb

Estimated rebate

$75

How to claim it

    Design your HOG system.

    Start with one HOG. Add more, pick how they stand, and every pipe, vent and fitting is worked out for you. When it looks right, request a quote.

    1 HOG

    Drag to turn

    What's the water for?

    Where does it come from?

    Where's the garden?

    How do they stand?

    Systems that fit

    Add-ons

    Color

    Your packOpen system

      Parts list
        How it goes together

          Request a quote and we'll price this pack for you. Nothing is charged now. HOGs stand on firm, level ground: pavers, blocks, a slab or compacted gravel.

          Already on the wall.

          Along a wall, beside a downspout, down a side passage. HOGs go where tanks usually can't.

          Four olive-green HOGs standing side by side on concrete blocks against a stucco house wall, fed from the gutter by a white pipe along the top and linked at the base, with an electric pump and hose reel at the end of the row and a hillside view
          Four HOGs, 200 gallons. Filled from the gutter along the top, linked at the base, with a pump to the hose.
          “This modular system combines form and function with eco-grooviness.”

          Homeowner, Woodside, CA. 2,500 gallons stored in 50-gallon HOGs on the house, shed and stables.

          Three cement-grey HOGs on a concrete step against a stucco wall under a tiled roof, fed by a diverter on a copper downspout and linked at the base, with a vent on the middle HOG, an overflow pipe from the last HOG down to a drain, and a brass tap
          Three HOGs, 150 gallons. Fed by a diverter on the downspout, linked at the base, with an overflow on the last HOG.
          A long row of desert-tan HOGs lining the wall of a narrow side path at sunset
          A whole side passage. A row of HOGs, with room left to walk.

          Designed in Australia, made in California

          Designed in Australia.

          Made in California.

          HOG began with an architect, Sally Dominguez, who was told a rainwater tank couldn't lie on its side under a deck. She designed one that could, to Australian tank standards. HOGs for the US are rotationally molded in California.

          Built to the standards Australia uses for water tanks and the fittings that touch drinking water, with tank plastic rated UL 94HB.

          AS/NZS4020 AS4766 UL94HB

          Up on the wall in five steps.

          You'll need a level, an adjustable wrench, plumber's tape and a saw. For the Wall Kit, add a drill and screws to fix the Unistrut channel to your wall: masonry screws for brick or concrete, wood screws for a fence or timber. Everything else comes with the HOG and its kits.

          Vertical, against a wallWall Kit
          1. Screw the Unistrut channel to the wall, level, 35½ inches above the base the HOGs will stand on. Use masonry screws for brick or concrete and wood screws for a fence or timber.
          2. Stand the HOGs on a firm, level surface, slide a spring nut into the channel behind each one, about 20 inches apart.
          3. Join HOGs at the bottom ports with the connectors and fit elbow vents at the top. Tape the threads and hand-tighten.
          4. Saw the nub off the first HOG along its guide line and push the inlet screen on, under the downspout.
          5. Bolt the stainless plate through the center of the O into the spring nut.
          Horizontal, under a deck

          Lay HOGs on a slope of 1 in 100, inlet end high, on a thin bed of sand. Stake or block them so they can't shift when full. A horizontal setup needs a pump to draw the water out.

          Before you startA full HOG weighs 458 lb: 417 lb of water plus the 41 lb tank. The base must carry the weight. The Wall Kit only keeps HOGs upright and must never take their load.

          Specifications.

          Part no. HOGW0014JK

          Capacity
          50 US gal
          Dimensions
          71 × 20 × 9½ in
          Empty weight
          41 lb
          Weight when full
          458 lb: 417 lb of water plus the 41 lb tank
          Material
          Food-grade medium-density polyethylene, BPA-free
          UV rating
          UV8 stabilized
          Wall
          ¼ in nominal
          Ports
          Three 1 in NPT stainless threaded inserts, one top, two bottom. Second top port sealed with a plastic bung
          Inlet
          3½ in, with 100-mesh stainless screen
          Wall mounting
          Unistrut channel, spring nut, M10 rod, ⅛ in stainless plate, domed nut. Wall screws not included
          Orientation
          Upright, on its back or on its side
          Maximum head
          78 in of water
          Standards
          Designed to AS/NZS 4020 and AS 4766. Tank plastic UL 94HB.
          Design life
          20+ years

          Questions.

          Can I drink the water?

          Not rainwater or greywater. The HOG itself is food-grade, but harvested rainwater is untreated, so use it for the garden, washing and flushing. For emergency drinking water, set up a separate eHOG: filled once with drinking water and sealed.

          Can I store greywater in a HOG?

          Not for long. In California, untreated greywater can't be stored for more than 24 hours, so a greywater HOG has to work as a surge tank that empties to subsurface irrigation within a day. See the greywater notice under Why HOG.

          Does the wall carry the weight?

          No. The Wall Kit only stops the HOG from tipping. The full weight, 458 lb per HOG, sits on the ground, so stand HOGs on compacted gravel, pavers or a slab.

          Do I need a permit?

          Usually not for a simple setup. In Los Angeles County, for example, gravity-fed rain barrels for garden use need a screened inlet, a spigot or hose bib, an overflow and a non-potable label. Pumped or larger systems can need review. Check with your local agency.

          How do I keep it clean?

          Use gutter guards or a first-flush diverter along with the inlet screen. In leafy or silty areas, flush the HOGs every 2 to 3 years with a hose through the inlet.

          Is it fine in full sun?

          Yes. The polyethylene is UV8 stabilized for outdoor use.

          Can I take my HOGs when I move?

          Yes. They unscrew from each other and from the wall, and they're built for a 20-year-plus design life. HOG was designed to be installed, taken down and reused.