A minimalist architectural drawing of a septic tank with a cross-section showing the internal structure of the building. the drawing is in black and white and shows a detailed view of the septic system, with a large, rectangular structure on the right side of the image, which appears to be a building with a curved roof and a flat, modern design. on the left side, the building has a white facade and is partially submerged in the water, with water flowing out of it and onto the ground. the ground is cracked and uneven, with some areas appearing darker than others. the water is a light blue color, and there are small waves visible on the surface of the water. the background is a plain white wall, and the overall design is simple and minimalistic, with no other elements present in the image.