0428-503-913 Monday - Friday 9:00 - 5:00 11 Jobomi House, Port Lincoln


Sizes & Specifications

Many septic tanks available ranging in size, shape & construction materials.

Maintenance schedule

How often they need to be serviced depends on; type, age & location.


There are a number of common problems that can cause blocked septic tanks.

Sizes & Specifications

There are numerous  types and sizes of septic tanks ranging in size, shape and construction materials.

Our basic charge is the same for average septics but the disposal charge {this is set by SA Water} will vary depending on the size of the septic.

Most tanks are made of a single cylindrical tank. They usually have a baffle 1/2 to 2/3 the way down the length of the tank with a couple of small holes half way up the baffle wall. If you are on a STED scheme the water then goes through to the sewer.

If you are not on a STED scheme the water usually goes through to a soakage pit down hill a little or through a reuse system. When the septic is left to long between cleans sludge can flow into the soakage pit, lining it and vastly reducing the amount of liquid that can soak away.

This problem usually comes to light towards the end of winter when you end up with sewage coming out of inspection pipes or the top of  the septic. If you have a reuse system the sludge can block sand filters with some systems and build sludge up around pumps in other systems.

Types of SEPTIC tanks

Sizes & Specifications

Concrete tanks

Small septics are generally 1750 lt and usually consists of a cylindrical  tank with one concrete lid on top. Typically they will look like this. 

Old square tanks are very common around older properties and are usually {not always} around 2000 lt.

They are usually around 2.5 to 3 mt long and have 3 or 4 very thick large concrete lids on top. I suggest you do not walk on top of these lids as they are not as strong as they look. If you are shifting a lid for pump out I suggest that the 3rd lid  away from the entrance is the best bet as you can often get to both sides of the baffle with one lid removed.

The most common tanks are 3000 lt and consist of a cylindrical tank approximately 2m long with two concrete lids, with wires for lifting, covering most of the length of the tank.

4000 lt tanks with 3 small lids with {swift lifts} are also common in this area and are approx 2 mt long also.

5000 lt tanks are uncommon but are sometimes found in areas of high usage and look almost identical to the 3000 lt tanks.

Biocycle Septics

These are a recycle system that allows you to reuse the grey water for gardens etc. They are a little more to clean out due to the high volume of water in the units and the lack of access to clean out the sludge.

Common around this area they are a round concrete tank with a blower and pump mounted on top. Health department recommend cleaning every 4 years.

Poly Tanks

There are several types of poly septics around and they do have an issue in cleaning buried septics as some have stamped on them to only half empty while others ask you to half fill them again if they are buried. Mostly 3000 lt.

The most common type has two lids that have 4 small luggs around lid. These lids clip over the openings and need a lot of room around them to be able to get a crowbar under the luggs.

Common problems

Toilet Wipes

Are you ready to be shocked!

Toilet Wipes {claim they are septic safe but do not break down, they may invoke a surcharge in the future}

Root Growth

Root growth in tanks {products that reduce root growth in septics can be purchased from many hardware stores}

Hard Crust

Hard crust happens when leaving the septic too long between cleanouts can cause the crust to go so hard that it finally blocks the inlet pipe.


Fat tends to combine in large hard lumps and will often be the final cause for a septic with above problems to block

Full soakage pits

Full soakage pits, happens sometimes if the septic has been left too long between cleans, sludge can flow from the tank and line the soakage pit, this lines the soakage pit and reduces water soaking away.  Symptom is normally liquid coming out of the concrete lids on the tank.

How often service?

Regular 3000 litre septics should be serviced every 4 to 6 years on average, (health department recommend every 4 years). 

Older 500 to 1750 litre septics (usually 1 lid) will have to be done more often, depending on the usage, and whether or not wipes and fat are going into the system.

Most biocycle systems should have the solids cleaned out every 4 years,
(there is very little extra cost or work to clean the whole system which we recommend).

Grease Trap and Trade Waste tanks vary greatly on use. Most will need to be done between 1 and 3 months.