If your outflow from house or commercial premises is not connected to a mains sewer, you may have a problem.
In very wild and rural areas there may not be an easy answer, with septic tank and local treatment options that still leave a standalone system.
However, if you are within sight of a mains, even if it’s up a hill, there are answers aplenty.
Creating tailored solutions suitable for a single household, large housing developments, and industry, is one of the things I do.
If you are feeling disconnected, and want some options, let me know.