NSW Council Septic Inspection Rules: Approvals to Operate, Audit Cycles and Fees for Every Hunter Council

Every septic tank, aerated wastewater treatment system (AWTS) or pump-out tank in NSW needs a council approval to operate under section 68 of the Local Government Act 1993, and every approval carries the conditions in clause 45 of the Local Government (General) Regulation 2021. Councils then inspect on a risk-based cycle, which the NSW Office of Local Government says varies from 1 to 10 years depending on the risk category and council. The maximum court penalty for operating without an approval is 20 penalty units ($2,200), and the on-the-spot penalty notice is $330. What differs, council by council, is how long the approval lasts, how it renews, what it costs and how often an officer comes. This guide sets out the state rules and then the seven Hunter councils side by side.

The two approvals

Section 68 of the Act lists two separate activities in Part C of its table. Item 5 is to install, construct or alter a waste treatment device or a human waste storage facility or a drain connected to it: the approval to install. Item 6 is to operate a system of sewage management: the approval to operate, which councils shorten to ATO. Section 68A makes clear that “the system” includes the trenches, mounds, irrigation areas and everything else in the land application area, not just the tank.

An approval to install comes with the condition (Regulation clause 34) that the facility must not be used until council has given written notice that it is satisfied the work was done in substantial accordance with the approval. That is why councils inspect during and after installation, and why the approval to operate is issued only after a satisfactory final inspection. Applications for new or altered systems now go through the NSW Planning Portal in most Hunter councils, with NSW Health accreditation documents for the system, a site plan showing buffer distances to waterways, bores and boundaries, and a site and soil assessment where effluent is disposed of on site. Councils must refuse a system that is not NSW Health accredited (clauses 40 and 41), except for large or one-off designs certified by an engineer.

What the approval to operate obliges you to do

Clause 45 of the Regulation makes these conditions of every approval to operate:

• keep the facility in a sanitary condition;
• never discharge into any watercourse or onto any land other than the approved effluent application area;
• comply with the conditions of the system’s NSW Health certificate of accreditation, which for an AWTS means a minimum 12-month service contract with a service agent employed or authorised by the manufacturer, servicing every three months, and a service report to council after each service;
• provide council with details of how the system is operated and evidence of compliance whenever council reasonably asks.

Clause 44 sets the performance standards council measures against: preventing the spread of disease and foul odours, contamination of water, degradation of soil and vegetation, insects and vermin, and contact with untreated sewage; minimising impacts on amenity; and re-using resources where appropriate. Breaching the conditions of an approval is an offence under section 627 of the Act, with the same 20-penalty-unit maximum as operating without one.

The OLG’s model conditions, which councils adapt, add the practical list: monitor sludge with a proper device and pump out when required; keep receipts for pump-outs, services and repairs and produce them on request; keep vehicles and stock off the application area; no buildings, driveways, garden beds or vegetable gardens on it; divert stormwater; notify council of any failure that may cause pollution; and make no alterations to the system or the associated buildings without written approval. Adding a bedroom without going back to council breaches the last one.

Renewals: three different models in the Hunter

Section 107A of the Act lets a council invite renewal by sending an invoice, and paying it counts as a renewal application on the original terms. The OLG guidelines say renewal doesn’t require a formal application form or supporting documentation, though some councils still require new owners to complete a form and pay a fee. In the Hunter that produces three patterns.

Risk-tiered terms (Maitland). Maitland City Council issues a 2-year approval to high-risk systems, 4 years to medium and 5 years to low, and requires an application for a renewal inspection at expiry. High risk includes a disposal area within 100 m of permanent water, 40 m of a gully or drain or 250 m of a bore, a lot under 1,500 m², a flood-liable system, a poor AWTS service history, surface ponding or an unfenced, unmown disposal area. Low risk starts with an AWTS with a satisfactory history and regular service reports.

Annual approval on the rates notice (Singleton, Port Stephens, Dungog, Muswellbrook, Upper Hunter). The approval is valid for 12 months and renews when you pay the charge on your rates, with no application: Singleton extends it each July providing no issues have been identified, Port Stephens runs 1 September to 31 August, Dungog 1 July to 30 June, and Muswellbrook and Upper Hunter charge an annual approval fee on the rates. What varies is the inspection interval, not the approval term.

Conditioned approval, renewed for a fee (Cessnock). Cessnock City Council issues an approval with conditions of operation and charges $104.00 (2026-27) to renew or extend it. Routine inspections are risk-based and free; a re-inspection, including one triggered by not acting on an AWTS service report, is $181.00.

Inspection cycles and what officers look at

Two categories deserve a note. Port Stephens’ and Dungog’s Low (TS) category takes a secondary treatment system out of routine inspection altogether if it was installed under a valid approval, operates to its conditions, is serviced under a maintenance agreement by a suitably qualified agent, and has no outstanding issues on its service report. Singleton’s minimal-risk tier is a 10-year owner self-assessment. In both cases a serviced AWTS with clean paperwork is the least-inspected system in the shire.

Fees in 2026-27

Fees change every July; check the current schedule before relying on a figure. There is no state-wide “OSSM licence fee”; there is a council charge, set locally.

Buying and selling: the approval belongs to the owner

The Easy Septic Guide states it plainly: the approval relates to the owner, not the land, and a new owner should notify the council and obtain an approval in their name. Regulation clause 47 gives a purchaser 3 months after transfer to operate without an approval, and a purchaser who applies within 2 months may keep operating until council decides. How the handover works varies: in Maitland the approval is not transferable and must be renewed in the buyer’s name within 3 months; Cessnock and Port Stephens reissue it to the new owner once the Land Registry notifies them of the transfer; Dungog reissues it on request; Muswellbrook asks vendors to hand over the system’s location, sizing and approvals. Nobody publishes a form called “application to transfer”. A planning certificate under section 10.7 of the planning Act has no prescribed item about on-site sewage, so the file has to be asked for. Our buyer’s guide and pre-purchase inspection page cover the practical steps.

Lapsed and unapproved systems

An older system with no council record is not automatically illegal to have, but operating it without an approval is the section 626 offence. The documented route is to regularise it: Cessnock calls it an approval to operate an existing system, charged at the new-system fee, and says it cannot grant retrospective approval for unauthorised installation work but will take a conciliatory approach where the owner is proactively fixing things; Muswellbrook registers systems 10 years or older for $250 and inspects if there has been no inspection in 10 years; Singleton asks for the section 68 form and warns that unregistered systems may attract a penalty notice.

What happens when a system fails an audit

Councils have graduated powers. Maitland gives rectification requirements on site and in writing with a time frame, may serve orders under the Local Government Act or clean-up notices under the Protection of the Environment Operations Act, and may issue a penalty infringement notice if a notice is not complied with. Port Stephens cites section 124 of the Act for unsatisfactory final inspections. Cessnock charges a re-inspection fee where an AWTS service report’s requirements were not acted on. Failure to comply with a council order is a separate offence under section 628. Inside the Hunter Water drinking-water special areas (the Grahamstown, Tomago Sandbeds, Nelson Bay, North Stockton, Williams River and Chichester catchments) an unapproved on-site system is also a breach of clause 6 of the Hunter Water Regulation 2024, with a maximum of 70 penalty units for an individual.

In practice most audits end with a list, not a fine: expose the lid, pump the tank, fix the outlet tee, fence the disposal area, get the AWTS serviced. Our council compliance audit ($250 to $450) is designed to produce that list before the officer does, and a pump-out with the tees checked ($350 to $650 for standard tanks) clears the commonest items.

Frequently Asked Questions

What is an approval to operate?

The council approval under section 68 of the Local Government Act 1993 (Table, Part C, item 6) to operate a system of sewage management. It is issued to the owner, carries the clause 45 conditions of the Regulation, and in the Hunter runs from 12 months (Singleton, Port Stephens, Dungog, Muswellbrook, Upper Hunter) to 2, 4 or 5 years (Maitland).

How often will council inspect my system?

On a risk-based cycle: yearly for high-risk systems in Singleton and Upper Hunter, up to every 5 years for low risk, a 10-year self-assessment for Singleton’s minimal-risk tier, and by exception only for serviced secondary systems in Port Stephens and Dungog. Maitland inspects at each renewal.

Do I have to be home for a council inspection?

Usually not. Cessnock says attendance is not required, Muswellbrook says owners need not be home but must provide safe access, and Singleton lets you arrange to be present for a locked property or pets. Council officers have statutory powers of entry with notice.

What if my approval has lapsed?

Renew it. Muswellbrook requires an inspection if there has been none in 10 years; Cessnock charges the renewal fee or, if the approval was allowed to expire, the new-system fee; Maitland requires a renewal inspection application. Operating without an approval carries a $330 penalty notice and a $2,200 maximum court fine.

Can council make me replace my septic tank with an AWTS?

Not simply because it is old. The OLG guidelines say existing systems need not meet current standards unless the system fails, the buildings are altered or the system is altered. If it has failed, council can require it to be fixed, and on small lots, poor soils or catchment land councils generally look for secondary treatment and a designed application area.

Where do AWTS service reports go?

To your council, as a condition of your approval to operate. Cessnock requires the report within seven days of each service and runs an online lodgement channel; the OLG norm elsewhere is 14 days. We send the report to your council after each quarterly service; the legal obligation to see it arrives sits with the owner.

Sources and further reading

• Local Government Act 1993 (NSW): section 68 and its Table, sections 68A, 107A, 124, 626 to 628.
• Local Government (General) Regulation 2021 (NSW): clauses 26, 34, 40, 41, 44, 45, 47 and Schedule 12 penalty notices.
• NSW Office of Local Government, Onsite Wastewater Management Guidelines (April 2025): inspection frequency, renewal practice, model approval conditions.
• NSW Office of Local Government, The Easy Septic Guide: the approval relates to the owner, not the land.
• Hunter Water Regulation 2024 (NSW): clause 6, on-site systems in special areas.
• NSW Planning Portal, Section 68 approvals: how applications to install or alter are lodged.
• Maitland City Council, Sewage management, Cessnock City Council, On-site wastewater, Singleton Council, On-site sewage management, Port Stephens Council, Onsite sewage management, Muswellbrook Shire Council, On-site sewage management, Dungog Shire Council, Onsite sewage management, Upper Hunter Shire Council, OSSM inspections: each council’s own rules and 2026-27 fees.