fossa séptica
Published 5 November 2026, 06:07
fossa séptica (septic tank)
Off-grid sewage treatment for a house that is not connected to the municipal network: waste water is collected and treated on the plot. It is a legal solution, but not one you can install on your own — the septic tank has to be approved by the câmara, and its location is checked.
Where you come across it. A house in the countryside, a plot without mains sewerage, a conversation about what being self-sufficient will cost.
The câmara must reject a building application if the plot has no road access, water supply or sewerage. A septic tank deals with waste water but does not remove the other requirements.
Official website: diariodarepublica.pt/dr/legislacao-consolidada/decreto-lei/1999-34567875