The Regulations define two primary categories of wastewater system. An “on‑site wastewater system” (regulation 5) is a system used on premises for the on‑site collection and management of wastewater generated at those premises, where some or all of the wastewater is reused or disposed of by means other than discharge to a community wastewater management system or SA Water sewerage infrastructure. It includes septic tanks, waterless composting toilets and aerated wastewater treatment systems to which AS/NZS 1546 applies. Importantly, an on‑site system may also be connected to a community system or SA Water sewerage infrastructure; the definition turns on the method of disposal of at least some wastewater, not on the exclusion of any off‑site discharge.

A “community wastewater management system” (regulation 3(1)) is a system for the collection and management of wastewater generated in a town, regional area or other community, but expressly excludes SA Water sewerage infrastructure. This distinction is critical because community systems are subject to a separate establishment procedure under Part 2, including mandatory public notification.

The “capacity” of a wastewater system (regulation 3(2)) is to be determined in accordance with the prescribed codes and expressed as equivalent persons (EP) or litres. Capacity determines the relevant authority: a system with a capacity that does not exceed 40 EP (and is not council-operated) falls under council jurisdiction; all other matters go to the Minister (regulation 6). This jurisdictional boundary shapes the regulatory pathway for approvals and exemptions.

“Wastewater works” (regulation 3(1)) is a broad concept that covers installation, alteration (involving a change to capacity or system type), decommissioning (excluding temporary systems), connection or disconnection to/from a community system or SA Water sewerage infrastructure. Each of these activities requires a wastewater works approval unless an exemption applies.

The “prescribed codes” (regulation 4) are the On‑site Wastewater Systems Code and the Community Wastewater Management Systems Code, both published by the Minister and incorporating standards or documents from bodies such as Standards Australia, the National Health and Medical Research Council, the Environment Protection and Heritage Council, SA Water, the Local Government Association, the Water Services Association of Australia, and any Minister or administrative unit of the Public Service. The codes are dynamic; they are “as in force from time to time”, except where the Regulations or a condition specifically fixes them at a point in time. The Minister must keep copies available for inspection at the Department’s principal office.

The Regulations also introduce the concept of “prescribed expiable conditions” (regulation 25(2)(a)), which are six specific conditions that a relevant authority may impose on a wastewater works approval. Contravention of such a condition attracts a lower expiation fee ($315) rather than the full penalty for a breach, but still carries a maximum penalty of $5,000 if prosecuted. These conditions include mandatory notification stages, display of notices, performance monitoring, discharge restrictions, operator class requirements and record-keeping.

The Regulations impose obligations and confer powers on a range of persons and bodies. The primary duty-bearers are operators of wastewater systems. For an on‑site system, the operator is the owner of the premises on which the system is located (regulation 3(1) definition of “operator”). For a community wastewater management system, the operator is the council or other person responsible for its operation. An operator must ensure that the system is operated, maintained and serviced in accordance with the conditions of any wastewater works approval and the prescribed codes (regulation 12(1)). The operator also bears responsibility for ensuring that wastewater is not reused or disposed of except as authorised and in accordance with the approval and codes (regulation 13(1)).

Persons undertaking wastewater works, and those causing such works to be undertaken, are directly captured by regulation 11. They must ensure the works are done in accordance with a wastewater works approval and the prescribed codes. Additionally, a suitably qualified person who completes wastewater works must provide a certificate and a detailed drawing to the relevant authority and the owner or occupier within 28 days (regulation 11(2)). The definition of “suitably qualified person” draws on licensing categories under the Plumbers, Gas Fitters and Electricians Act 1995, meaning plumbers and drainers are the principal class of persons who can certify on‑site wastewater works.

Sellers of on‑site wastewater systems (including offers for sale and possession for sale) must ensure that the system is the subject of a current product approval and, if pre‑fabricated, bears the required marking, and that copies of the manuals are provided to the purchaser (regulation 14). This affects manufacturers, distributors and retailers.

Councils play a dual role. Where a council is the relevant authority for on‑site systems with capacity not exceeding 40 EP and not council-operated, it receives applications for wastewater works approvals and exemptions, imposes conditions, maintains a register and exercises enforcement powers. Where a council proposes to establish a community wastewater management system, it must give public notice to affected landowners, consider submissions, obtain a wastewater works approval from the Minister, and may then require connection of existing on‑site systems (regulations 8 and 9). The Minister may issue binding directions to councils about granting exemptions from connection (regulation 10(2)) and from compliance with prescribed codes (regulation 15(2)).

The Minister is the relevant authority for larger on‑site systems (over 40 EP), for any system operated by a council, and for all community wastewater management system approvals. The Minister also grants product approvals, keeps the register of product approvals, and may revoke such approvals for cause (regulation 21). SA Water is affected where a community wastewater management system proposes to connect to its sewerage infrastructure or significantly increase discharges; the relevant authority must give SA Water a reasonable opportunity to comment on the application (regulation 24(2)). Finally, authorised officers and their assistants may enter premises, inspect, test and take samples under Part 5, and persons must not hinder or obstruct them.

The Regulations establish a comprehensive set of duties and rights. The central duty is to obtain the requisite approvals before conducting wastewater works. Regulation 11(1) requires that a person undertaking or causing wastewater works to be undertaken must ensure that in the case of installation of an on‑site system, the system is the subject of a product approval, and that the works are undertaken in accordance with a wastewater works approval and the prescribed codes. This creates a chain: no product approval, no lawful installation of an on‑site system; no works approval, no lawful works.

After completion of works, a suitably qualified person must provide a certificate certifying that the work has been undertaken in accordance with the approval, and a detailed drawing of all pipes, fittings, components or equipment installed (regulation 11(2)). This certificate must be given to the relevant authority and to the owner or occupier within 28 days. Failure to do so is an offence punishable by a maximum penalty of $5,000 and an expiation fee of $315.

Operators of wastewater systems have a continuing duty to operate, maintain and service the system in accordance with the conditions of any wastewater works approval and the prescribed codes (regulation 12(1)). Similarly, a person who maintains or services a wastewater system must do so in accordance with the same instruments (regulation 12(2)). Reuse or disposal of wastewater is tightly controlled: the operator must ensure that wastewater is not reused or disposed of to land or otherwise unless authorised by the conditions of a wastewater works approval, and then only in accordance with those conditions and the codes (regulation 13). Both the operator and any person who physically reuses or disposes of the wastewater are separately liable under the same penalty structure.

The Regulations also grant significant rights to councils and the Minister. A council that has obtained a wastewater works approval for a community wastewater management system may, by written notice, require the operator of an on‑site system to connect to the community system and to submit an application for a wastewater works approval for the connection (regulation 9(1)). The operator must comply with that notice; failure to submit an application is an offence with a maximum penalty of $1,250 and an expiation fee of $160. If the operator does not apply within the specified period, the relevant authority may grant the approval as if the application had been made (regulation 9(4)). If the required works are not carried out, the relevant authority may carry them out and recover the costs as a debt (regulation 9(6)-(7)). However, the operator may apply for an exemption from the connection requirement (regulation 10).

Both product approvals and wastewater works approvals are subject to conditions that may be varied or revoked. The relevant authority may impose additional conditions on its own initiative but, except in cases of urgent need to prevent significant harm, such changes cannot take effect for at least six months after notice is given (regulations 19(6) and 25(7)). Applicants and holders have a right to apply for variation or revocation of conditions on payment of the prescribed fee (regulations 19(5) and 25(6)). The Minister may also revoke a product approval if it was obtained improperly or a condition has been contravened, but only after giving at least 14 days for submissions (regulation 21).

The Regulations provide a tiered penalty structure. The standard maximum penalty for most substantive offences is $5,000. This applies to breaches of wastewater works requirements (regulation 11), operation, maintenance and servicing duties (regulation 12), reuse or disposal restrictions (regulation 13), sale of systems without product approval (regulation 14), contravention of conditions of exemptions (regulations 10(5) and 15(6)), hindering an authorised officer (regulation 28(3)), failing to comply with a notice to obtain an expert report (regulation 29(2)), unauthorised reuse of wastewater from SA Water infrastructure (regulation 30), and making false or misleading statements (regulation 31). A lower maximum penalty of $1,250 applies specifically to an on‑site system operator who fails to submit an application for a connection to a community wastewater management system when required by a council notice (regulation 9(3)).

Expiation fees provide an alternative to prosecution for minor offences. The Regulations specify three expiation amounts: $160 for failing to submit a connection application (regulation 9(3)); $315 for certain offences such as failure to provide a completion certificate (regulation 11(2)), sale of an unapproved system (regulation 14), and breach of a prescribed expiable condition attached to a wastewater works approval (regulations 11(1)(b)(i), 12(1)(a), 12(2)(a), 13(1)(b)(i), 13(2)(a)). The concept of “prescribed expiable conditions” is defined in regulation 25(2)(a) and includes six types of conditions: mandatory notification stages, display of notices, performance monitoring, discharge material restrictions, operator class requirements, and record-keeping. The expiation fee for breach of such a condition is $315, which is lower than the general expiation fee of $315 for some other offences but notably higher than the $160 fee for the specific connection application offence.

Enforcement mechanisms extend beyond penalties. Part 5 grants authorised officers broad powers to enter premises, inspect, examine, test, take samples, and give directions (regulation 28). These powers may be exercised in connection with the administration or enforcement of the Regulations, and an officer may be accompanied by assistants. Impeding an authorised officer is an offence punishable by a $5,000 maximum penalty. Additionally, if the Minister or a council suspects on reasonable grounds that a wastewater system is adversely affecting or threatening public or environmental health, they may issue a written notice requiring the operator to obtain and provide a report from an independent wastewater engineer addressing specified matters (regulation 29(1)). Failure to comply attracts a $5,000 maximum penalty, and if the operator still does not comply, the Minister or council may obtain the report themselves and recover the costs as a debt (regulation 29(3)).

The Regulations also provide for the recovery of costs in two other circumstances. Where wastewater works for connection to a community system are not carried out, the relevant authority may cause the work to be done and recover the costs and expenses reasonably incurred, plus the prescribed fee that would have been payable on the application, as a debt from the non‑complying person (regulation 9(7)). This cost‑recovery mechanism is separate from any criminal penalty and can result in significant financial liability.

The Regulations operate within the broader statutory framework of the South Australian Public Health Act 2011, which provides the enabling power for these provisions. References to “the Act” throughout the Regulations mean the Public Health Act. In particular, section 109(6)(c) of the Act is referenced in relation to public inspection of prescribed codes (regulation 4(3)) and other codes, standards or documents (regulation 32). The Regulations also rely on the Act’s general penalty and enforcement provisions, though they set specific penalties within the Regulations themselves.

A key interaction is with the Natural Resources Management Act 2004. Regulation 25(5) provides that if a condition of a wastewater works approval authorises the reuse or disposal of wastewater, that authorisation is conditional on any necessary authorisation being in force under section 127 of the Natural Resources Management Act 2004. This means that even if the wastewater works approval permits reuse, the operator must also obtain a separate water management authorisation under that Act before undertaking the activity. This dual‑approval requirement is a critical compliance point for anyone proposing to irrigate with treated wastewater.

The Regulations also connect with the Water Industry Act 2012 through the definition of “SA Water sewerage infrastructure”, which means sewerage infrastructure within the meaning of that Act owned or operated by SA Water. The distinction between on‑site systems, community wastewater management systems and SA Water sewerage infrastructure is central to the jurisdictional boundaries of the Regulations. Where a community wastewater management system intends to connect to SA Water sewerage infrastructure, the relevant authority must give SA Water a reasonable opportunity to comment on the wastewater works approval application and must take those comments into account (regulation 24(2)).

Trade qualifications under the Plumbers, Gas Fitters and Electricians Act 1995 are incorporated through the definition of “suitably qualified person” in regulation 11(3). This provision limits the class of persons who can certify completion of wastewater works to holders of certain plumbing contractor licences or plumbing worker registrations under that Act, specifically those authorised for sanitary plumbing or draining work. This ensures that certification is performed by appropriately licensed tradespeople.

The Regulations revoke the Public and Environmental Health (Waste Control) Regulations 2010 and contain transitional provisions to manage the changeover. Schedule 2 Part 2 provides that product approvals and wastewater works approvals in force under the revoked regulations immediately before commencement are taken to be approvals under the new Regulations, subject to the same conditions. However, product approvals from the old regime expire two years after commencement of the new Regulations or on the original expiry date, whichever is earlier (Schedule 2 clause 4(2)). Notices issued under regulation 24 of the revoked regulations (which relate to requiring connection to a community system) continue as notices under regulation 9 of the new Regulations (Schedule 2 clause 6). The Schedule also temporarily modifies the On‑site Wastewater Systems Code by deleting certain clauses relating to certification documentation, pending full adoption of the new code requirements.

The South Australian Public Health (Wastewater) Regulations 2013 commenced on 16 June 2013 (Gazette 14.6.2013 p2588). Since then, they have been amended annually or biennially. The legislative history records amendments in 2013 (two sets), 2014, 2015 (two sets), 2016, 2017, 2018 and 2020. A significant amendment occurred by the 2018 regulations (Gazette 21.6.2018 p2181, Sch 2 cll 7 to 17) which, among other changes, deleted Schedule 1 (which had contained fees), deleted regulation 33, and varied multiple provisions including the definition of “prescribed fee” and the application and variation provisions for both product approvals and wastewater works approvals. The deletion of Schedule 1 means the fee amounts are no longer set in the Regulations themselves but are prescribed by the Act or elsewhere. The 2020 amendment (Gazette 4.6.2020 p3017) varied the definition of “prescribed fee” again.

The transitional provisions in Schedule 2 Part 2 include a modification of the On‑site Wastewater Systems Code that applies until the second anniversary of the commencement of regulation 4 (regulation 3 of Schedule 2). This modification deletes certain clauses from the code that required certification documentation from an independent product certification agency and NATA‑registered laboratory results. The purpose was to allow a transition period during which the full code requirements were not enforced. Historical versions of the Regulations are available for 1 July 2013, 1 July 2014, 25 June 2015 (electronic only), 1 July 2015, 1 July 2016, 1 July 2017, and 1 July 2018. The legislative history note warns that references to other legislation or instruments may be obsolete if not automatically updated, so practitioners should verify the current version.

The text of the Regulations does not cite any judicial decisions. The Regulations have been in force for over a decade, and while it is likely that enforcement actions have been taken (particularly through expiation notices and council‑issued orders), no cases are referenced either in the legislative text or in the provided source material. The Regulations create criminal offences with monetary penalties, and any prosecution would be brought in the Magistrates Court or higher courts, but there is no information within the source about reported decisions. Practitioners should conduct their own case law searches for decisions interpreting the Regulations or the underlying Public Health Act and the prescribed codes. The absence of cited litigation does not imply the absence of enforcement; the expiation fee regime suggests that most minor contraventions are dealt with administratively rather than through formal court proceedings.

Several provisions in the Regulations create traps for the unwary. The deadline for submitting a completion certificate after wastewater works is only 28 days (regulation 11(2)). This is a short window, and missing it is an offence with a $5,000 maximum penalty and an expiation fee of $315. The certificate must be in a form approved by the Minister and signed by a suitably qualified person, and must be accompanied by a detailed drawing. Operators, installers and certifiers all need to coordinate to meet this timeline.

A wastewater works approval expires if the works are not commenced, or are commenced but not substantially completed, within 24 months after the date of approval (regulation 26(1)). This sunset provision is easily overlooked if a project stalls. The relevant authority may postpone expiry on application and payment of the prescribed fee, but proactive management is required. Similarly, product approvals expire after five years (or a shorter period if specified), and the holder must apply for a fresh approval if they wish to continue selling or supplying that system (regulation 18).

Conditions on approvals can be varied by the relevant authority on its own initiative, and the variation can take effect immediately if the authority states that it is necessary to prevent or mitigate significant harm to public or environmental health or the risk of such harm (regulations 19(6)(b) and 25(7)(b)). This means that a system operator could receive a notice requiring immediate compliance with new conditions, without the usual six‑month lead time. The authority need only state its opinion in the notice; the operator may challenge that opinion in proceedings, but in the interim must comply.

The definition of on‑site wastewater system in regulation 5(1)(b) includes any associated irrigation or other system for disposal of wastewater on land other than that from which the wastewater is collected. This means that if a system discharges to an adjacent property or a common area, the entire irrigation network is part of the system and subject to the approval and code requirements. A common scenario is a small sewerage treatment plant that irrigates to a neighbouring paddock - that irrigation system must be included in the wastewater works approval.

The requirement in regulation 25(5) that reuse or disposal conditions are conditional on any necessary authorisation under the Natural Resources Management Act 2004 is a cross‑agency trap. An operator may have a valid wastewater works approval but still not be authorised to irrigate if they do not hold the required water management authorisation. Both approvals must be obtained and maintained concurrently.

Sellers of on‑site systems must ensure not only that the system has a product approval, but also that the manuals referred to in the approval are provided to the purchaser (regulation 14(b)). This is a separate obligation from the product approval itself. A seller who provides an approved system without the manuals commits an offence. Additionally, pre‑fabricated systems must bear the marking required by the prescribed codes, either as in force at the time of approval or at the time of sale (regulation 14(a)(ii)). This allows for changes in marking requirements over time; the seller must comply with whichever version is current at the relevant time.

The transitional provisions for product approvals under the revoked regulations set an expiry date of two years after commencement of the new Regulations or the original expiry date, whichever is earlier (Schedule 2 clause 4(2)). Many product approvals that were automatically carried over would have expired in 2015, and may have lapsed if the holder did not apply for a new approval under the current Regulations. Anyone relying on an old product approval should verify its current status through the Minister’s register.

Finally, the false or misleading statement offence in regulation 31 carries a maximum penalty of $5,000 and does not have a specified expiation fee. It applies to any statement made in information provided or records kept under the Regulations, including applications, certificates, reports and monitoring data. The offence is broad, covering both inclusions and omissions, and applies to any material particular. This means that a person completing an application who inadvertently omits a relevant detail could be liable.

Compliance with the South Australian Public Health (Wastewater) Regulations 2013 requires a systematic approach covering design, approval, installation, certification, operation and maintenance. The first step is to correctly classify the wastewater system. Determine whether it is an on‑site system, a community wastewater management system, or connected to SA Water sewerage infrastructure, as the regulatory pathway differs. For an on‑site system, ascertain its capacity in EP or litres by reference to the prescribed codes, because this determines which body is the relevant authority (council for systems up to 40 EP not council‑operated; Minister for all others). If a council is involved in operating the system, the Minister becomes the relevant authority regardless of capacity (regulation 6(1)(b)).

Before any sale of an on‑site wastewater system, the system must have a current product approval from the Minister. If it does not, the manufacturer or seller must apply for one under Part 4 Division 1, providing technical specifications, a service life statement, manuals and any required certificates (regulation 16). The Minister may request further information or modifications. Once granted, the approval is subject to conditions that must be complied with, and it expires after five years (regulation 18). The holder should renew in advance of expiry.

Before undertaking any wastewater works (installation, alteration, decommissioning, connection or disconnection), the person responsible must apply for a wastewater works approval from the relevant authority (regulation 23). The application must include technical specifications, proposed operation and maintenance conditions, proposed reuse/disposal conditions (if applicable), and any other information required by the codes or the application form. The relevant authority may ask for further information. The determination process (regulation 24) allows refusal if the specifications do not comply with the prescribed codes or if the works would threaten public or environmental health. For community systems connecting to SA Water infrastructure, SA Water must be given an opportunity to comment.

Once approval is granted, the works must be carried out in accordance with the approval and the prescribed codes (regulation 11(1)). The person undertaking the works must ensure that a suitably qualified person (a licensed plumber or drainer) supervises or completes the works. Within 28 days of completion, that suitably qualified person must provide a certificate in a form approved by the Minister to the relevant authority and the owner/occupier, along with a detailed drawing of all pipes, fittings, components or equipment installed (regulation 11(2)). Failure to provide this certificate on time is an offence.

After the system is operational, the operator (owner for on‑site, council for community) must ensure the system is operated, maintained and serviced in accordance with the conditions of the wastewater works approval and the prescribed codes (regulation 12). This includes complying with any mandatory notification stages, performance monitoring, discharge restrictions and record‑keeping conditions. If the approval authorises reuse or disposal of wastewater, that activity must also comply with any authorisation required under the Natural Resources Management Act 2004 (regulation 25(5)). The operator should keep a copy of the current approval conditions, the prescribed codes, and any relevant certificates on hand for inspection.

If the operator receives a notice from a council requiring connection to a community wastewater management system, they must submit an application for a wastewater works approval for the connection within the time specified in the notice (regulation 9). If they wish to be exempted, they may apply to the council for an exemption (regulation 10). The operator should respond promptly to any notice, because failure to apply is an offence.

For persons who sell on‑site systems, compliance requires checking that the system has a current product approval, that pre‑fabricated systems bear the required code marking, and that the purchaser receives the manuals identified in the approval (regulation 14). Sellers should maintain records of approval numbers and manual versions.

Record‑keeping and transparency are key. Each relevant authority must keep registers of wastewater works approvals and (for the Minister) product approvals, accessible during ordinary office hours and potentially by electronic means (regulations 22 and 27). Operators should verify that their approvals are recorded correctly and that any variations or revocations are noted. For community wastewater management systems, councils must undertake public notification at least 21 days before proceeding, considering submissions before deciding to proceed (regulation 8).

Finally, if the Minister or a council suspects that a wastewater system is adversely affecting public or environmental health, they may issue a notice requiring the operator to obtain and provide a report from an independent wastewater engineer (regulation 29). The operator must comply with the notice within the specified period; otherwise, the Minister or council may obtain the report and recover costs. Proactive monitoring and maintenance reduce the risk of such notices.