Browse Forums General Discussion Re: No Water in Rain Tank 3Jan 22, 2013 3:31 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: No Water in Rain Tank 6Jan 23, 2013 12:20 pm Murray Douch My original question was, does anyone know an excellent plumber? Hi Murray, People post replies to try and help people like yourself who are seeking guidance but you need to provide the information that is needed in order to give an appropiate answer. For anyone to recommend a plumber, they need to know the area where you live! I endorse the comments made by B STAR above. Most of the rainwater tank installations I see are sub standard and getting a plumber to have a 'look' will cost you an arm and a leg and most of them lack knowledge in this field anyway. You are much better off doing your own 'investigating' with the proper guidance. If I was legally able to do so, I would love to post photos taken from plumber's websites that show examples of their work and add comments detailing why the installations shown are sub standard. WET SYSTEM: Your concern regarding the soil being disturbed indicates that you have an underground infeed pipe. This is called a wet or charged system as the pipe and downpipes remain full of water to the level of the water in the vertical riser. The vast majority of wet systems feed to a tank's top meshed inlet via a vertical riser that transfers the water from an underground pipe to the inlet. Provided the low water level is not caused by a lack of rain, you could have a cracked underground pipe or the pipe could even be blocked. If no water at all is getting to the tank and IF you have a wet system, the latter is the most likely scenario. Wet systems should have leaf diverters fitted to the harvested downpipes to prevent larger debris from entering the underground pipe(s) and to also prevent mosquitoes breeding but this is not compulsory in many areas. Even when fitted with leaf diverters, wet systems fitted with vertical risers can still block. You should also carefully dig down and determine what type of pipe is buried. It would also be handy if you posted as to whether you are on reactive soil. The use of 90 mm stormwater pipe is always a worry. I read a document a couple of years ago that stated that 90 mm stormwater pipe should never be buried or subjected to pressure. This conflicts with the standards but I have tried to find the reference since than and have been unsuccessful. The pipe is made in different wall thicknesses and you can buy 90 mm stormwater pipe in wall thicknesses that range from 2.5 mm to 1.35 mm. Most pipe used is 1.9 mm. It is possible that what I read referred to a very thinned walled pipe but if you do have a 90 mm wet system and if you are on reactive soil and if you have had a dry period, then you might have a leaking pipe or join/fitting caused by soil movement as indicated in your first post. Many standards are poorly written and the subject of 90 mm stormwater pipe use, particularly in reactive soils, needs an urgent overhaul. DRY SYSTEM: This is when the pipe from the gutter is diverted directly to the tank's top meshed inlet. When it stops raining, the pipe drains and will DRY. If you have a dry system, then leakage could be caused by several things but again I have to guess given the lack of information. Does the pump supply a toilet? If so, check the cistern valve float level to make sure that the cistern is not overflowing. The connections between the tanks and all outlets will also need to be checked and also make sure that the pump has not been hard fitted. Flexible couplings must always be used and are required by the standards. How many downpipes are harvested and do you know the roof areas(s) harvested (plan area)? My guess is that the low water level is probably caused by low rainfall but again, not enough information. It would be a costly exercise to get a plumber if the lack of water is caused by an insufficient roof harvest area during a dry period. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Can a plumber put a tap on a rain water tank which is full? Tank is similar to one in photo. Cheers. 0 1664 18 90425 From what I know about water tanks (I've been working with a client on them for a few years now) is this - The concrete can last a lifetime if they don't crack for some… 2 10620 |