The base wastewater safety pack every NSW utility needs.
Sewers, rising mains, wet wells and pump stations are anaerobic by definition — they generate H₂S and methane continuously, whatever your plant does. Three SWMS plus the four Part 4.3 documents that carry the confined-space duties.
The documented system, not just the method
Every wastewater utility needs this pack, whatever its treatment plant does. The collection network is anaerobic by definition — sewers, rising mains, maintenance holes, wet wells and pump stations generate hydrogen sulphide and methane continuously, regardless of whether the plant downstream is aerated. And a SWMS alone does not discharge the duties. A SWMS is required for high risk construction work under section 299, and maintenance of these assets is construction work — but the SWMS only documents the method. It references the entry permit, the rescue plan and the gas detection regime; it is not any of them. Separately, the confined space duties in Part 4.3 apply to every entry whether or not it is construction work.
This pack closes both gaps for anaerobic assets. Seven documents: three Safe Work Method Statements — Wastewater Confined Space Entry, Sewage Pump Station Operation & Maintenance, and Anaerobic Systems General Management — plus a working confined space entry permit, a non-entry rescue plan, a gas detector calibration and bump test procedure, and an H2S exposure and Workplace Exposure Limit readiness summary. All authored for New South Wales against the WHS Act 2011 (NSW), the WHS Regulation 2025 (NSW) and AS 2865, supplied unbranded and editable. Regulator: SafeWork NSW. The pack is built for the reality of these assets rather than a generic confined space template: it carries the gas stratification rule, the pump station's electrical and lifting hazards that the gas conversation routinely hides, and the hazardous area controls for digester gas plant.
- ✗The confined space entry permit
- ✗The non-entry rescue plan
- ✗The gas detector calibration & bump-test regime
- ✗The exposure-monitoring position for H₂S
Part 4.3 of the WHS Regulation 2025 (NSW) requires all four for every confined space entry — whether or not it is construction work. This pack is what documents them.
The 7 documents, in detail
Every document is authored for NSW, supplied as an editable, unbranded Microsoft Word file, and ready to complete for your specific assets. No blind purchase — here is exactly what you receive.
Wastewater Confined Space Entry SWMS
the entry task anywhere, with 20 hazards, plus the traffic corridor and digester control sections.
Sewage Pump Station Operation & Maintenance SWMS
the equipment inside the station — 415 V switchboard and VSDs, pump lifting over an open wet well, pressurised rising main, level controls and valves.
Anaerobic Systems General Management SWMS (Non-Entry)
the daily work — jetting, CCTV, cover removal, blockage clearing, gas system operation — built around the two-gas stratification rule.
Confined Space Entry Permit
a working permit covering hazard identification, isolation verification, pre-entry testing, ventilation, personnel, rescue verification, traffic control, entry log, periodic re-test log and close-out.
Non-Entry Rescue Plan
space-specific arrangements built on retrieval from outside, with roles, equipment verification, retrieval-failure escalation and a rescue drill record.
Gas Detector Calibration & Bump Test Procedure
procedures, frequencies, wastewater-specific sensor cautions, and bump test, calibration and out-of-service logs.
H2S Exposure & WEL Readiness Summary
health effects by concentration, the current standard, where H2S actually sits in a wastewater system, and a pre-1 December 2026 action checklist.
Pack Index
contents, the legal reason a SWMS alone is not enough, an implementation sequence, the three facts to brief every worker on, and an explicit statement of what the pack does not cover.
✓All eight documents as editable Microsoft Word (.docx) files, unbranded, compatible with Word 2016 and newer, Google Docs and LibreOffice Writer, with editable fields for PCBU, ABN, site, prepared by, reviewed by, approved by and review date.
Anaerobic Wastewater Systems Compliance Pack, ready to use
Seven-document compliance set for anaerobic wastewater treatment operations — digesters, covered lagoons, sludge handling and biogas: three SWMS (wastewater confined space entry, sewage pump station operation & maintenance, anaerobic systems general management) plus a working confined space entry permit, a non-entry rescue plan, a gas detector calibration and bump test procedure, and an H2S exposure and WEL readiness summary. Authored for NSW against the WHS Act 2011 (NSW) and WHS Regulation 2025 (NSW).
- ✓All 7 documents, authored to NSW law
- ✓Editable, unbranded Microsoft Word (.docx)
- ✓Single-site licence · use across your ABN
- ✓Instant download after payment
- ✓12 months of regulatory updates included
7 documents — about $214 each.
Secure checkout via Stripe. Instant download of all 7 documents after payment.
14 hazards, identified and controlled
These are the hazards the documents are built around — each with the consequence that makes it matter, rated by priority. This is the depth a regulator expects and a generic template does not carry.
Rapid collapse and death, with the sense of smell deadened at roughly 100-150 ppm just as the gas becomes lethal
A single-point gas test is a false negative for one gas or the other; crews are poisoned holding meters that read clear
Catastrophic fire or explosion from any ignition source, in a layer nobody tested
Workers conclude a space has cleared because the smell has gone, when the opposite is true
Multiple fatalities, the signature outcome of wastewater confined space incidents
H2S orders of magnitude above the exposure standard, plus flammable methane in a hazardous area
Electrocution or arc flash; the hazard the gas conversation routinely hides
Crush fatality and loss of the load into a gas-filled well
Fatal injury to an entrant, standby person or rescuer struck by a vehicle
Drowning or entrapment when a chamber fills without warning during entry
A surgical emergency from a wound that looks trivial; amputation or death if untreated
Every atmospheric decision rests on a false reading; an H2S sensor at end of life reads low
Breach of the hazardous chemicals duty, with no monitoring data to establish the position either way
Controls and alarm set points built to a standard that may be materially lowered
Where holding only a SWMS goes wrong
A NSW council holds a confined space SWMS and believes it is covered. A crew attends a blocked maintenance hole in a main street. They have the SWMS. They do not have a permit system, so nobody formally verifies the upstream pump station is locked out. They have a four-gas detector, but it has not been bump tested for six weeks and its H2S sensor is near end of life, so it reads low — and they hold it at the opening, where it tells them nothing about the H2S pooled 4 m down or the methane at the crown. They set out cones rather than a traffic guidance scheme, because the SWMS describes an entry, not a road. One worker descends without a retrieval line, because the tripod is on another truck. Every one of those failures sits outside the SWMS and inside the four supporting documents this pack adds. The permit would have forced the isolation check and refused entry on an out-of-date instrument. The calibration procedure would have caught the sensor. The rescue plan would have stopped the descent. The council was not short a SWMS. It was short a system, and the gap is where people die.
High risk construction work under s291
Why this work is high risk construction work, category by category — and what the law requires once it is.
Construction work carried out in or near a confined space
Sewers, maintenance holes, wet wells, pump station chambers, valve pits, digesters and gas holders are all enclosed structures not intended for human occupancy, entered for maintenance with restricted entry and egress.
Construction work carried out in or near a contaminated or flammable atmosphere
Anaerobic conditions generate hydrogen sulphide and methane continuously; biogas plant carries both at process concentration.
Construction work carried out on or near energised electrical installations or services
Pump station maintenance is carried out on and near 415 V switchboards, variable speed drives and control circuits.
Construction work carried out on, in or adjacent to a road, railway, shipping lane or other traffic corridor in use by traffic other than pedestrians
Maintenance holes and many pump stations sit in road reserves, and covers are opened from within a live carriageway.
Construction work carried out in or near water or other liquid that involves a risk of drowning
Sewers, wet wells and chambers carry live flow and can surge or fill from an upstream discharge or pump start.
Construction work carried out in an area at a workplace in which there is any movement of powered mobile plant
Crane trucks, EWPs and davits operate at pump stations and lift pumps over open wet wells.
Construction work involving a risk of a person falling more than 2 metres
Entry is by ladder or step irons into chambers commonly 2 m to 6 m deep, and open wet wells present a fall risk to surface workers.
The work covered by this pack is high risk construction work under Section 291 of the WHS Regulation 2025 (NSW), so a SWMS must be prepared before work commences (Section 299), kept readily accessible, reviewed as necessary (Section 302), and given to the principal contractor if one is appointed. Critically, the confined space provisions in Part 4.3 apply in full and independently of construction status — an entry permit, atmospheric monitoring, a standby person and rescue arrangements established before entry are required for any confined space entry, including routine operational entry. Energised electrical work is separately prohibited under Part 4.7 Division 4, sections 154 and 157 unless de-energisation is not reasonably practicable. Hydrogen sulphide is a hazardous chemical and a PCBU must ensure no person is exposed above the workplace exposure standard, which in a wet well or chamber generally requires monitoring data rather than assumption. An H2S exposure, an asphyxiation, a biogas explosion, an electric shock, a confined space incident, a drowning or a traffic strike causing death or serious injury is prosecuted as a Category 1 or Category 2 offence under the WHS Act 2011 (NSW), with the most serious breaches carrying imprisonment for individuals, and the duty of care extends to members of the public near an open chamber in a road reserve.
The confined spaces and hazardous chemicals Codes of Practice are the benchmark a regulator will measure this work against, with AS 2865 for the entry system, AS 1742.3 for the traffic guidance scheme and the AS/NZS 60079 series where biogas creates a hazardous area.
The control measures in every document
Not generic advice — the specific, hierarchy-of-controls measures written into the pack, matched to how these assets actually fail.
Built for the people who do this work
If you operate, maintain or contract to these assets in NSW, this pack is written for your duties.
- ✓Local councils and water utilities operating sewer networks, rising mains, sewage pump stations and anaerobic treatment assets — which is every wastewater utility, whatever the plant does.
- ✓Network maintenance crews carrying out jetting, hydro cleaning, CCTV, cover removal and blockage clearing.
- ✓Confined space entrants, standby persons and permit issuers working in sewers, maintenance holes and wet wells.
- ✓Treatment plant operators running anaerobic digesters, gas holders and biogas systems.
- ✓WHS managers and HSE advisors responsible for H2S and methane exposure, confined space entry and rescue across a wastewater system.
Authored to the codes and the law
The Codes of Practice and Australian Standards these documents are measured against, and the legislation behind them.
Confined spaces
Binding 1 Jul 2026The benchmark for the entry permit system, atmospheric testing, ventilation, standby person and rescue arrangements across the pack.
Managing risks of hazardous chemicals in the workplace
Binding 1 Jul 2026The management of H2S and biogas as hazardous chemicals, including the duty to keep exposure below the workplace exposure standard.
AS 2865 — Confined spaces
The technical standard underpinning the entry permit, atmospheric limits, standby and rescue arrangements.
AS 1742.3 — Traffic control for works on roads
The traffic guidance scheme required before a maintenance hole cover is lifted in a live carriageway.
AS/NZS 60079 series — Explosive atmospheres
Hazardous area classification and explosion-protected equipment for digester gas holders, biogas pipework and gas mixing.
Workplace exposure standards for airborne contaminants (transitioning to Workplace Exposure Limits from 1 December 2026)
The H2S values of 10 ppm TWA and 15 ppm STEL, and the basis for the readiness summary in this pack.
- §Work Health and Safety Act 2011 (NSW) — Section 19 primary duty of care, owed to workers and the public; Section 47 consultation; Sections 35-38 notifiable incidents.
- §Work Health and Safety Regulation 2025 (NSW) — Section 291 (high risk construction work) and Section 299 (preparation and content of a SWMS), with review under Section 302.
- §Work Health and Safety Regulation 2025 (NSW) — confined spaces (Part 4.3): entry permits, atmospheric monitoring, standby person and emergency procedures, applying to every entry independently of construction status.
- §Work Health and Safety Regulation 2025 (NSW) — hazardous chemicals (Part 7.1) and the H2S workplace exposure standard (10 ppm TWA / 15 ppm STEL), transitioning to Workplace Exposure Limits from 1 December 2026; electrical (Part 4.7) including the energised work prohibition at Division 4, sections 154 and 157.
- §AS 2865 (Confined spaces), AS 1742.3 (Traffic control for works on roads), AS/NZS 1891.1 (fall arrest), AS/NZS 1715 and 1716 (respiratory protective equipment), the AS/NZS 60079 series (explosive atmospheres) and AS/NZS 60079.29.2 (gas detectors).
Frequently asked questions
The documented system, ready to complete.
7 NSW documents, instant download, editable and unbranded, yours to own — authored to the WHS Act 2011 (NSW) and WHS Regulation 2025 (NSW).
All prices AUD, GST exclusive · Instant download · Single-site licence · 12 months of updates
This pack is a documentation set to support due diligence — it is not compliance in itself. You must complete the documents for your specific assets, have trained and competent workers, hold calibrated equipment, drill any rescue plan on your actual assets, and — where exposure is uncertain — obtain personal exposure monitoring data from a competent person. See the full Disclaimer & Terms of Use within each downloaded document.