Browse Forums Building A New House Re: Tank you 8Oct 19, 2007 2:24 pm stonecutter1309 From the websites I've read, a 20,000L tank should definitely be able to run a house for a year - especially if you've got greywater recycling. When I was young ... we were a family of six with around 10,000-15,000L worth of water tanks (600mm annual rainfall). The tanks collected all of the water from a 12sq house roof (think the gutters all sloped to one end of the house - no downpipes other than those heading into the tanks!). No dishwasher or automatic washing machine, but we did have a significant vegetable patch. In a dry summer the tap to the toilet cistern (with elastic band restricted flush) would get turned off completely ... bucket flushing with grey water only (from the twin tub washing machine)... ah... sweet memories! Needed a truck full of town water in really dry summers, cheap when you have your own truck, wouldn't want to do it now! What sort of rainfall zone are you in? Can't imagine needing more than 40,000L of storage capacity if you have efficient appliances. Had a friend who moved from suburbs out to a small property and kept complaining about how quickly their water ran out. Turns out that they only ever used a towel once and then it went straight in the washing, even if just drying their hands. Didn't take long for them to break that habit! Thanks for letting us know. The programmer will have a look at this later today. 2 6692 DIY, Home Maintenance & Repair But if it is a ground level open pit, then it is not a charged system. No surprises there. The pipes have obviously been altered and there would be a reason for this.… 3 31285 If you can calculate the reasonable charged head from let's say 100mm below the gutter to the top of where the vertical riser's horizontal discharge pipe will be, that… 11 17539 |