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Contact Council

02 6540 1100
council@upperhunter.nsw.gov.au

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On-site Sewage Management System Inspections

In accordance with Local Government Act 1993, all operations of on-site sewage management require a licence/approval to conduct such an activity. This licence/approval is obtained through the local Council.

Upper Hunter Shire Council has in excess of 2,500 homes that are not within Council sewered areas. Property owners that reside (permanently or temporarily) at these premises must ensure adequate wastewater management practices. Installing and maintaining an on-site sewage management system provides a means for this responsibility to be met.

Council Strategy & Legislation

Governance of the operation of an on-site sewage management system has been developed to provide regulatory agencies with tools to enforce compliance of wastewater treatment systems. This includes:

  • On-Site Sewage Management Strategy 2015
  • Local Government Act 1993
  • Protection of the Environment Operations Act 1997
  • AS/NZ Standard 1547 and 1546
  • Environmental Planning and Assessment Act 1979

Commonly Asked Questions

What is an on-site sewage management system?

An on-site sewage management system (OSMS/OSSM), provides a means of disposing of human waste products from the toilet, bathroom and kitchen. Toilet waste is referred to as black water. Bathroom and kitchen waste is referred to as grey water.

The most commonly used design for an on-site sewage management system is demonstrated in the diagram below:

There are different designs of on-site sewage management systems available.

Primary Treated Systems are available as concrete and plastic septic tanks, grey water tanks and Aerated Wastewater Treatment Systems (AWTS). Primary systems do not treat black water/effluent. The effluent remains highly potent and requires disposal under the ground. For example in a trench, or evapo-transpiration area.

Secondary Treated Systems treat the effluent to a level that is safe to be dispersed through surface or subsurface irrigation.

Disposal areas for your on-site management system may be constructed as:

  • Absorption trenches   
  • Evapo-transpiration absorption (ETA) beds
  • Sub surface irrigation >100mm below ground level
  • Sub surface disposal >300mm below ground level
  • Mound systems
  • Surface irrigation (not be permitted for new systems on blocks less than 4000m2 in area or in sensitive locations.)

Consult with a wastewater specialist when choosing a new on-site sewage management system.

How does an on-site sewage management system work?

There are many various types of wastewater management systems and all work differently. Generally, wastewater (black and grey water) enter the septic tank and the solids settle over time. The effluent reaches the outlet of the system where it is either treated and/or disposed of in a disposal area.

Refer to NSW Health website for the different types of systems, or consult with your wastewater professional.

What maintenance will an on-site sewage system require?

Most systems require the sludge to be periodically pump-out. For example, a family of 4 people living in a house will require a pump out at least every 5 years. But do not wait until the system is full. When the sludge level reaches 2/3 full, engage a licenced pump-out professional and arrange for a tankers to pump-out your system. They will dispose of the waste appropriately.

It is important that you do not remove the sludge yourself, or apply it to land. This increases the risk of the spread of disease by bacteria, viruses, parasites and other organisms in the wastewater, contamination of groundwater and surface water, pollution of waterways, degradation of soil and vegetation and decreased community amenity, caused by odours, noise and insects.

Do I get charged for having an on-site sewage management system?

Council does charge for on-site sewage management systems. This fee is reflected on rates notices, and can be found at on Council’s website.

If you own an aerated wastewater treatment system (AWTS) you require quarterly services on your system to ensure they are working at optimal levels. Your service provider will charge a fee for service. That fee is determined by the service provider.

Why does Council inspect my on-site sewage management system?

All owners and operators of on-site sewage management systems require, under the Local Government Act 1993, a licence/approval to operate the system. In order to obtain such approval, the appropriate regulatory authority (Council) must be satisfied that the system complies with appropriate legislation and guidelines. Visit the Office of Local Government website for more information.

Why does Council inspect my on-site sewage management system when my service provider looks after it?

Only the appropriate regulatory authority (Council) is able to provide you with a licence/approval to operate an on-site sewage management system. The service providers are there to maintain the system, and ensure it is working efficiently.

How many times does Council inspect my on-site sewage management system?

All inspections are based on the risk-rating of your land and the on-site sewage management system condition. The table below provides a guide to determining the risk of a system. If the buffer distances are met, then the risk is low. If only one minor buffer distances has not been met, but all others have, then the risk is medium. If the majority of buffer distances have not been met then the risk is high.

SystemRecommended Buffer Distances
All land application systems100 metres to permanent surface waters (eg river, streams, lakes etc)
 250 metres to domestic groundwater well
 40 metres to other waters (eg farm dams, intermittent waterways and drainage channels, etc)
Surface spray irrigation6 metres if area up-gradient and 3 metres if area down-gradient of driveways and property boundaries
 15 metres to dwellings
 3 metres to paths and walkways
 6 metres to swimming pools
Surface drip and trickle irrigation 6 metres if area up-gradient and 3 metres if area down-gradient of swimming pools, property boundaries, driveways and buildings
Subsurface irrigation6 metres if area up-gradient and 3 metres if area down-gradient of swimming pools, property boundaries, driveways and buildings
Absorption system12 metres if area up-gradient and 6 metres if area down-gradient of property boundary 6 metres if area up-gradient and 3 metres if area down-gradient of swimming pools, driveways and buildings

*Environment & Health Protection Guidelines – On-site Sewage Management for Single Households (1998).

Inspections Schedule
  • Risk Rating - Inspections conducted every
  • Low - 5 years
  • Medium - 2-3 years
  • High - Annual
Why am I charged for having an on-site sewage management system?

Over the years on-site sewage management systems have created potentially hazardous and life-threatening environmental disasters. Waterways and drinking supplies have been compromised with septic material leaking into them. Spread of disease was high with the failure of septic storage systems, which lead government authorities to tighten regulations to better management such systems.

The costs associated with having an on-site sewage management system, charged by Council, allow Council, who are the appropriate regulatory authority, to conduct inspections and assess your on-site sewage management system. These inspections are based on compliance with associated legislation such as the Local Government Act 1993 and Protection of the Environment Operations Act 1997. Council staff require training, both prior to commencement of a position and ongoing, within appropriate regulatory areas. Administration duties are required to hold and maintain records, all of which is covered by the fees you are charged.

What does it cost?

Fees and charges for the current financial year are available on Council’s website, search for “On-site Sewer Management”.

What do I do if my on-site sewage management system is failing?

You should engage a suitably qualified and experienced person to assess your failing on-site sewage management system. It may be a simple fix. Council officers are always available to provide you with advice also. If your system is due for an licence/approval, then it will require an inspection, which is covered by your rates charges. If this is the case, then a Council officer will be able to assist in diagnosing the potential problem and inform you about how to have it fixed, before you spent thousands of unnecessary dollars.

How do I install a new on-site sewage management system?   

Steps to take when installing a new on-site sewage management system include:

  1. Engage a licenced and experienced person to conduct the necessary works.
  2. Submit a Section 68 application form to Council
  3. Upon approval of the Section 68 application, works may commence.
  4. Council will conduct several inspections throughout the install of your new system.
How do I modify my on-site sewage management system?

To modify your existing on-site sewage management system, which may include installing a new disposal area or a new septic tank, you should:

  1. Engage a licenced and experienced person to conduct the necessary works.
  2. Submit a Section 68 application form to Council
  3. On the form this will be a Modification to the existing on-site sewage management system.
  4. Upon approval of the Section 68 application, works may commence.
  5. Upon completion, Council will inspect the modified on-site sewage management system area (tank/disposal area).
  6. Upon satisfactory completion, an approval will be generated.

Further reading

Easy Septic Guide - a comprehensive easy-to-read 42 page booklet from the NSW Department of Local Government

Fees and Charges - Council’s website lists all fees and charges for the current financial year.

NSW Health website - a comprehensive list of the different types of sewage management systems and information on the accreditation process

NSW Department of Legislation - Local Government (General) Regulation 2005

On-Site Sewage Management Strategy


The information on this page is available for download.


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Our Services

Upper Hunter Shire Council is a local government authority and provides an extensive array of services including health and building; town planning; aged care; sporting and recreational facilities; roads; libraries; waste collection; airport facilities; saleyards; public venues; water; children, youth and families and tourist information.

About Us

Upper Hunter Shire is located in the Hunter Region of NSW, approximately 250km north of Sydney.  The Shire is predominantly rural and encompasses 8,100km2.

 

Contact Us

PO Box 208
Scone NSW 2337

Phone:  02 6540 1100
Fax:  02 6545 2671
council@upperhunter.nsw.gov.au

135 Liverpool Street, Scone
34-40 Vennacher Street, Merriwa
47 Mayne Street, Murrurundi

After hours emergencies for roads, bridges, animal control,
water, sewer & landfill
Phone: 02 6540 1199

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