New rules for septic tanks came in to force in January 2020. I imagine, like the majority of septic tank users I was unaware of the changes and, in effect, I'm now breaking the law. I only became aware of the rule changes when I looked at putting my house on the market and it flagged up with the solicitor.

I'm now in the position of having to replace my current "traditional" system with a sewage treatment plant. The installation costs are not inconsiderable being in the region of £12-15k so I want to get it right.

There are numerous systems on the market that meet the new criteria but very little in the way of meaningful reviews or historical information on reliability, maintenance costs etc.

The vast majority of compliant systems require an electric supply and have internal moving parts, which in my opinion will inevitably lead to down time and repair costs.

There are a couple of systems that have no moving parts and no power supply, they do have renewable elements. There is even less information available on these systems but, in theory they would be a more "attractive" proposition.

Does anyone have any experience of living with a compliant sewage treatment system that they could pass on ?