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Frequently Asked Questions

  • What size fosse (septic tank) do I need?
  • The smallest tank that conforms is a 3000litre tank or 3metre cubed. This size is suitable for properties up to 5 rooms not including kitchen & bathrooms
    then for each additional room (not bathroom) you will need to enlarge the septic tank by 1000litres
  • Our 5 bedroom house is only used for holidays by myself & my partner why do I need such a big system?
  • Systems are always sized by the size of the property. If you later tried to sell your property with an undersized system any potential purchasers would expect a big reduction for redoing the system
  • I have a 5 room property & I might converty the barn to a gite later - can the system be enlarged?
  • No it's not viable, it needs to be planned at the begining or a separate system installed when needed.
  • I've just brought a collection of building I want to make into gites - how big a system do I need?
  • Before considering one big system think whether at a later date it might be more advantageous to sell the buildings as individual houses because one system for all of them would create problems at that point - who pays for maintenance & emptying
  • I've just brought a holiday home & how much will it cost to get one of those microstations installed? one of those green spinning top shaped ones
  • For a holiday home you cannot install a system that requires electricity to purify your waste and only systems that have been approved by the French authorities can be installed & approved by S.P.A.N.C  The green one that you talk of are now approved. but only for permanent residences. Bear in mind the depth of some units because in the Creuse it could be very expensive to excavate through the rock that is often present here
  • SPANC have done done a diagnostic on my septic tank system and say I need to install a filter after the septic tank. How much will this cost?
  • If you want a system that conforms then you need a septic tank of 3000litres.  If the septic tank isn't that big then you will never have a system than conform & potential purchasers will expect a reduction or be put off. Cost is site specific
  • I've spoke to people who say they will do the work at 0% VAT why does your quote show 7%?
  • These people are mis-leading you. It means thay are auto entrepreneurs with a limited 32k euro turnover per year. They cannot charge VAT or reclaim it but must still pay it on purchases. Check if they have decenniale insurance.
  • How many bathroom can I connect to a 5m3 septic tank?
  • As many as you like for the same property. Bathrooms don't count because you don't live in them.  A house with 47 bathrooms & 2 bedrooms - how many people can sleep there? Bedrooms not dormitories
  • All our land is higher than the floor inside - can I put the fosse in the house?
  • No.  There are pumps available to lift the "sludge" to the septic tank  or  better if possible is the pump after the septic tank. Each site is unique as has its own solution, unfortunately with a pump involved it costs much more.
  • How much does it cost to get a septic tank or micro station emptied? 
  • Exact costs will depend on your remoteness but you should budget on at least two hundred euros. With some micro stations needing to be emptied every 4 months if used to their full capacity that cheap installation can soon start to look like a money pit.
  • How come these micro stations need empting so often? I thought they "ate" the stuff and turned it into water.
  • Solids don't magically dissapear, they are collected in the unit, the aeration helps the bacteria  break down the solids which settle to the bottom of the tank.
  • How come you have put TVA at 19.6% on my quote for work on my barn conversion and Mr. A. N. other would charge me 7%?
  • The correct rate for work on any building that has never been habitation, a property for living in,   (for at least 2 years is the higher rate.  To enable Businesses to invoice at the lower rate you sign a form to say that you are entitled to the lower rate & that if an error is found you are solely responsible for any penalties and repaying the TVA. A responsible business would advise the customer of this. Businessses do not gain from either rate TVA




septic tanks - electricity - plumbing - renovation
numéro siren 502 907 108
T.V.A  FR**502907108