We had the digger make our percolation area as well. Because our house will have a dry toilet it is enough for us to have a percolation area that treats the grey water, we wont have any sewage. There comes one pipe from the house, 2 meters under the ground (so it does not freeze) and into a settlement tank. Off the tank there goes two evenly placed pipes with holes in them. So the grey water goes in the settlement tank, leaves any bigger stuff in there (like food scraps from doing the dishes), and continues through the pipe into the ground. The ground was dug and filled with stones. Above the stones and pipe there came a material that protects from any organic matters from going in from above. On that there came fine sand. Off the end of the pipes there goes up two ventilation pipes about 1,5 meters above ground and they have a cap on them. The area is to be kept clear from any big trees and roots, any driving on it or putting heavy stuff on it.
Truck bringing stones and sand for the percolation area
Right low corner: pipe coming from house into the treatment well. In the middle: two pipes under stones. The water spreads evenly along the whole area.
The percolation area had to be placed far enough from the drinking water well so we ended up having to dig through our little forest that was between our house and road. This picture shows a view from the house looking at that little forest and through it you can see the road.
This was such a fascinating and practical post—thank you for documenting a part of the building process that often goes unnoticed but is absolutely essential. Your explanation of the percolation area (imetyskenttä) was clear, informative, and grounded in real experience. It’s easy to overlook the importance of proper wastewater management when planning a home, but your post shows just how much thought and work goes into doing it right. I really appreciated the photos and step-by-step insights; they make the whole process much more approachable for anyone planning a similar setup. If you ever need support with future site development or home renovations, I’d highly recommend R for Remodelers. They’re known for integrating smart, efficient infrastructure solutions into beautiful, functional spaces. Looking forward to seeing how your building journey continues—thanks for sharing the technical side with such clarity!
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