Worm farm systems work well over here - not sure about WA though.

ATU - aerobic treatment unit
assuming you cant connect to a sewer in the street

Have you approached the council's Environmental Health Officer (if they are approachable)? That's a solution as there's no point 'reinventing the wheel' where there are many that have been in the same situation.

As for 9m drain, Beagle's right in that sometimes they will allow a separate 'branch' although redirection & depth solutions generally aren't allowed (in Vic).

Many homes I design require effluent disposal treatment...I tend to contract the services of an engineer - costs about $700 for a full effluent disposal design, which includes all calcs. One I'm working on at the moment is a "DNR approved Secondary Treatment Plant with subsurface drip irrigation". It 'seeps' under 210m2 of lawned area (the plant is filtered to a DN25 Class12 poly at each end running to a grid of SFW700 dripper lines, 1.4m spacing, 250mm deep). Specific trees are planted at each end of the property to retain any additional 'bleed' from the system.

Hope this helps better than my first reply.

Sh!t over the neighbours fence. P!ss in a corner in the garden.

Sailhack said...
Have you approached the council's Environmental Health Officer (if they are approachable)? That's a solution as there's no point 'reinventing the wheel' where there are many that have been in the same situation.

As for 9m drain, Beagle's right in that sometimes they will allow a separate 'branch' although redirection & depth solutions generally aren't allowed (in Vic).

Many homes I design require effluent disposal treatment...I tend to contract the services of an engineer - costs about $700 for a full effluent disposal design, which includes all calcs. One I'm working on at the moment is a "DNR approved Secondary Treatment Plant with subsurface drip irrigation". It 'seeps' under 210m2 of lawned area (the plant is filtered to a DN25 Class12 poly at each end running to a grid of SFW700 dripper lines, 1.4m spacing, 250mm deep). Specific trees are planted at each end of the property to retain any additional 'bleed' from the system.

Hope this helps better than my first reply.

Thought about underground seep lines but thinking roots might clog the dripped lines?