Secondary dwelling house lower than the sewer pipe?

I need some suggestion of who should I contact or consult to rectify my issue in renovating the studio unit at the back of my house.

The studio unit is located at the lower end of the slope while the Sydney water & Sewer pipe is on the higher ground.

How can I ensure the bathroom drainage can be built properly with no issue?

 

The plumber and builder will look after this.

 

Is the studio currently a non-habitable building?

Easiest solution is to build substantially above the invert level of the sewer (stairs up to the bathroom) or seek to connect further down the sewer service on an adjoining block (get an easement from the neighbours). Alternatively install a septic tank/envirocycle or collection well with a pump out system.

 

saniflo macerator with a pressure line to sewer pipe up hill pump will be $1.5kish excluding pressure pipe line and install extra. can connect 1 toilet, kitchen, shower and possible a third fixture to the one unit they're small as well.

Cheers, Elives

 

Thanks @Scott and @Elives I will ask for the Saniflo systems and hopefully it is low maintenance with it.

It was just an unused building at the backyard that is now used as a secondary toilet for the renter.

 

Your outside Overflow Relief Gully ( surcharge point ) must be 150mm lower than the lowest internal fixture (usually the shower)

saniflo's are great and will be ideal for u
many other brands as well..... Reece has their own brand

Pump the wastewater up high and then connect it back to the gravity sewer

You MUST get a licenced plumber to install it though

 

Yes, and one of the plumbers I've hired proposed grinding type sewage pump for$7000+, it is quite expensive, so I wonder what are my options?

 

1. Don't have any plumbing connected to the building (cheapest option)
2. Install all fixtures and fittings above the point of discharge to the sewer in accordance with the code (eg put all your plumbing on the second floor)
3. Install a charged system
4. Install a collection well and get the sullage contractor to collect when full

Have you contacted a hydraulic or waste water engineer for an engineered solution or trying to work out how you can defy gravity?

 

Just purchased a dirty water pump that will do screened sewage from Reece for $1100. Need a pit/tank as well of course.

Tools

 

Yes, I will go with option #3 as @Scott No Mates have suggested.

The pump itself is not expensive but the labour cost and 11m trench digging for the 32mm pressurized PVC is the majority.