what are you talking about ?? no dodges, no fiddling, do you think on a site for 4-15 houses, they all have separate drains ?? no chance, there is one main road connection.
The last application I did was for a friend, and only 2 weeks ago, building inspector happy, I am talking foul and separate topwater, no incoming mains water supply, (which is metered individualy,as is gas and electric.
regards,
Stephen