We have recently been through the entire process of the selection and installation of a new sewage system, and last week had the final (successful) sign off/inspection on behalf of SPANC. We were replacing a non conforming traditional fosse system with a MicroStation.
What really struck me was how central the (I assume) obligatory Étude is to the whole process…SPANC and their technical partners here deferred absolutely to any and all the recommendations set out in the etude. SPANC also declined to recommend any system, or brand/make, again deferring entirely to the advice in the etude.
For us the etude unlocked the appropriate type of system to put in, (several types were deemed unsuitable due to the soil type and also space constraints). The etude specialist also provided a list of (government) pre approved systems that were appropriate for our circumstances.
Of course how SPANC operates could very much differ from region to region. I was though surprised by how “hands off” they were during the entire process. (This is being fairly charitable. In our case they were really quite useless and added no value whatsoever to the process!).