Where does the water from the toilet at home end up, the sea or the septic tank?

The domestic wastewater of urban residents is generally discharged into the septic tank, and after a period of stay and precipitation, it is connected to the municipal drainage pipe network, which is either directly discharged into the natural water body, or directly into the river, and finally discharged to the sea. In addition, it also depends on how your city operates, and the city's municipal drainage pipe network has a confluence system (rain and sewage are not separated), and there is also a diversion system. Depending on what kind of neighborhood you live in, most toilet sewage is not separated from other domestic sewage. >>>More

Inland pipes flow into sewage treatment plants or rivers, where paper towels are broken down by microorganisms.

Depending on how your city operates, the city's municipal drainage pipe network has a confluence system (rain and sewage are not separated), and a diversion system. Depending on what kind of neighborhood you live in, most toilet sewage is not separated from other domestic sewage. Most of the sewage is treated by the sewage treatment plant, which is the general process of using the metabolism of microorganisms to decompose the organic components in the water, anaerobically digest the remaining sludge, and finally disinfect the water.

Sewers flow into rivers or ditches, some into sewage treatment stations, and some are dug up to refine gutter oil and then sold to people for cooking.

The submersible bend is too shallow, or there are two submersible bends (the toilet comes with one, and you have to make one more in your own sewer), to put it bluntly, the height difference is not enough or the water flow speed of the extra submersible bend is not fast enough.