Lead Pipe & Lead-Jointed Drain Removal SWMS

Lead pipe and lead-jointed drain removal is a specialised plumbing activity commonly encountered in heritage residential properties, pre-1970s commercial buildings, and ageing municipal infrastructure across Australia. The work involves cutting, dismantling, and disposing of lead service pipes, lead-caulked cast iron drainage joints, and associated solder connections — all of which release inorganic lead dust, fume (when heat is applied), and contaminated debris that pose significant inhalation, ingestion, and environmental contamination risks. Because lead is a Schedule 14 hazardous chemical and a confirmed reproductive toxin and neurotoxin, this work is subject to the most stringent controls in Australian WHS law.

This SWMS has been prepared in accordance with the model Work Health and Safety Act 2011 and the WHS Regulation 2025, which classifies any process generating airborne lead as 'lead-risk work' under Part 7.2. The activity also constitutes High Risk Construction Work (HRCW) under section 291 of the WHS Regulation 2025 because it involves the disturbance of asbestos-era infrastructure that frequently contains lead and may be co-located with ACM. Section 38 of the WHS Act creates a duty to notify the regulator before lead-risk work commences, and Regulation 392–407 mandate atmospheric monitoring, biological monitoring, and health surveillance for exposed workers.

A documented SWMS is legally required under Regulation 299 before this work begins on any construction site. The PCBU must prepare it in consultation with workers (s.47 WHS Act), provide it to the principal contractor, and ensure the work is performed in accordance with the SWMS or stopped immediately if it is not. Failure to do so attracts Category 2 penalties, the maximum of which is set by the Act and indexed annually and is substantially higher for a body corporate than for an individual.

Hazards identified

18 hazards covered, sorted by priority.

Control measures

Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.

1. 1Notify the WHS regulator in writing before commencing lead-risk work in accordance with WHS Regulation 2025 Reg 397, including process description, expected duration, and worker numbers
2. 2Conduct pre-work air monitoring and material sampling to confirm lead presence and quantify exposure against the workplace exposure standard of 0.05 mg/m³ (8-hour TWA)
3. 3Eliminate hot work where possible — use mechanical pipe cutters, snap cutters, or cold-chiselling with HEPA-shrouded tools instead of oxy or torch cutting
4. 4Establish a lead-controlled work area with physical barriers, warning signage in English and dominant site languages, and negative-pressure enclosure (≥5 air changes/hour) for indoor work
5. 5Provide H-Class HEPA vacuum and on-tool extraction for all cutting operations; prohibit dry sweeping and compressed-air cleaning
6. 6Issue P3/full-face PAPR respirators fit-tested to AS/NZS 1715 with a minimum protection factor of 50; maintain fit-test records for 5 years
7. 7Provide disposable Type 5/6 coveralls, nitrile gloves, and dedicated lead-only footwear; bag and launder reusable PPE separately via a licensed lead-decontamination service
8. 8Establish a three-stage decontamination unit (dirty/shower/clean) on site; mandate showering and full clothing change before leaving the controlled area
9. 9Prohibit eating, drinking, smoking, and vaping in the work area; provide a separate clean break facility with handwashing prior to entry
10. 10Arrange biological monitoring (blood lead level testing) for all lead-risk workers prior to commencement, at 1 month, then at intervals required by Reg 415 — remove any worker exceeding 20 µg/dL (males) or 5 µg/dL (females of reproductive capacity)
11. 11Engage a registered medical practitioner to provide health surveillance under Reg 435 and maintain records for 30 years
12. 12Test for asbestos in all jointing compounds before disturbance; if positive, engage a Class A licensed asbestos removalist and comply with the Code of Practice for the Safe Removal of Asbestos
13. 13Isolate and lock out all electrical, gas, and water services; verify dead-test before commencing cuts on metallic pipework
14. 14Classify and dispose of all lead waste as Hazardous Waste through an EPA-licensed transporter using consignment tracking; double-bag waste in heavy-duty 200µm polythene with hazard labelling
15. 15Conduct clearance air monitoring and visual inspection before dismantling enclosures; achieve <0.05 mg/m³ before sign-off
16. 16Hold daily pre-start toolbox talks reviewing the SWMS, sign workers on, and stop work immediately if conditions deviate from the documented method
17. 17Maintain a confined space entry permit, gas test log (O₂, H₂S, CH₄, CO), and standby person for any pit, manhole, or subfloor entry per AS 2865:2009
18. 18Provide hot work permits, fire watch, and 30-minute post-work fire watch; relocate combustibles and provide appropriate fire extinguishers when torch work is unavoidable

Applicable Codes of Practice

High-Risk Construction Work triggered

Worked example

A licensed plumbing contractor in inner-Melbourne is engaged to replace a corroded lead water service and lead-jointed cast iron stack in a 1925 weatherboard home undergoing renovation. Before mobilising, the supervisor reviews this SWMS with the two-person crew during a pre-start meeting, captures sign-on, and confirms both workers hold current P3 fit-test certificates and baseline BLL results below 5 µg/dL. The team submits the Reg 397 lead-risk work notification to WorkSafe Victoria 48 hours prior. On site, they erect a polythene containment around the wet area, deploy a H-Class HEPA negative-air unit, and isolate the water main. Asbestos sampling of the joint backing returns negative, allowing them to proceed without a Class A removalist. The lead pipe is cut using a snap cutter with on-tool HEPA extraction — no torch is used. Cast iron sections are lifted by two workers using mechanical aids and double-bagged in labelled 200µm polythene for collection by a licensed hazardous waste transporter. At end of shift, both workers shower in the three-stage decontamination unit, bag their disposable coveralls as lead waste, and change into clean clothes before leaving site. Clearance air monitoring records 0.018 mg/m³ — well below the WES — and the SWMS, sign-on register, monitoring results, and waste consignment notes are filed for the 30-year retention period required under Reg 444.

Related legislation

• Work Health and Safety Act 2011 (Cth model)
• Work Health and Safety Regulation 2025 — Part 7.2 Lead
• Work Health and Safety Regulation 2025 — section 291 High Risk Construction Work
• Work Health and Safety Regulation 2025 — Chapter 8 Asbestos
• Hazardous Waste (Regulation of Exports and Imports) Act 1989
• Environment Protection Act 2017 (Vic) and equivalent state EPA legislation
• Plumbing and Drainage Act and Regulations (state-specific)
• Safe Drinking Water Act 2003 (Vic) and equivalent state legislation
• Dangerous Goods Act 1985 and Regulations

Frequently asked questions