Burst Pipe Repairs NSW 2026 - Complete Pricing Guide

Burst Pipe Repair Costs in NSW for 2026

A burst pipe is among the most time-sensitive plumbing emergencies a NSW property owner faces, because the damage from an uncontrolled water release compounds rapidly from the moment of failure until the water supply is isolated. A 20mm copper water main operating at the typical Sydney Water supply pressure of 500 to 700 kilopascals delivers approximately 20 to 30 litres per minute when fully open, meaning a pipe that runs unchecked for an hour before the water is turned off has already discharged 1,200 to 1,800 litres into the building structure, subfloor, or garden. Understanding where your property's water meter and isolation valve are located before an emergency occurs is one of the most genuinely useful pieces of practical knowledge any NSW property owner can have.

The range of repair costs for a burst pipe in NSW is wide because the failure can occur in almost any material, at almost any depth, and in almost any location from a fully accessible roof space pipe to a pressurised supply main running under a 200mm reinforced concrete slab. The pipe location and access conditions drive cost more than the pipe material alone, and a small copper pipe burst under a slab will typically cost more to repair than a large polyethylene main burst in an accessible garden bed, because the slab cutting, detection, and reinstatement costs dominate the total scope.

Immediate Response to a Burst Pipe in NSW

The first action when a burst pipe is identified or suspected is to isolate the water supply. The isolation point depends on which system has failed and where the burst is located. For a cold water supply pipe burst inside the building, the isolation valve is typically located at the water meter adjacent to the front boundary, either in a recessed box in the footpath or at the property boundary. Turning the meter valve clockwise to the fully closed position stops all cold water flow to the property. For properties with a roof-mounted cold water storage tank, an additional isolation valve at the tank outlet controls flow from the tank once the mains pressure supply is stopped.

Hot water system pipe bursts have a different isolation procedure. The cold water supply to the hot water unit must be isolated, either at the cold water isolation valve on the inlet of the hot water system itself (a lever or gate valve on the cold water pipe entering the unit) or at the main meter if the inlet valve cannot be located quickly. Turning off the hot water unit's power or gas supply before the plumber arrives is also advisable for electric and gas storage systems to prevent the unit from attempting to reheat an empty cylinder. Our emergency plumber guide covers the full emergency response sequence for burst pipes alongside hot water failures, gas leaks, and sewer overflows, and explains what information to have ready when you call a licensed NSW plumber for an urgent attendance.

Once the supply is isolated, note the water meter reading and take photographs of any visible damage, water pooling, or affected areas before cleaning up or moving items. The photographic record is valuable for insurance purposes and establishes the scope of water ingress at the time of discovery, which is relevant if there is any question about the duration of the leak or the extent of damage when the insurance claim is lodged. If the water has reached electrical switchboards, power outlets, or fixed appliances, do not reconnect the power supply until a licensed electrician has confirmed the installation is safe.

For apartment buildings and strata properties, the body corporate emergency contact or the strata manager should be notified immediately if the burst pipe involves or could affect common property infrastructure. The owners corporation is responsible for common property plumbing, and activating their emergency response ensures the right authority is engaged from the outset rather than complicating responsibility decisions after the repair is done. Our strata and body corporate plumbing guide covers the responsibility framework for burst pipes in NSW strata schemes in detail.

Pipe Materials and Failure Causes in NSW

NSW residential and commercial buildings contain a mix of pipe materials reflecting successive generations of construction, and each material has distinct failure modes that inform both the repair approach and the likelihood of future failures in adjacent pipe sections. Understanding the pipe material in your building is genuinely useful information, not just for the current repair but for planning any future maintenance or renovation work that involves the same system.

Copper pipe, installed as the standard hot and cold water supply material from approximately the 1950s through to the mid-2000s, is durable under normal operating conditions but susceptible to several specific failure modes in NSW. Pitting corrosion from aggressive water chemistry, particularly in properties drawing from bore water or in areas with naturally soft water that is corrosive to copper, creates pinhole leaks that may weep for months before becoming a visible problem. Dezincification affects copper alloy fittings rather than the copper pipe itself, particularly older brass gate valves and compression fittings with high zinc content, causing the zinc to leach out and leaving a porous, structurally weak fitting that fails suddenly under system pressure. Electrolytic corrosion occurs where copper pipe is in contact with dissimilar metals, particularly galvanised steel or cast iron, without appropriate dielectric isolation, and properties with mixed-material plumbing systems from renovation eras when connections between old galvanised steel and new copper were common are prone to this failure type.

Galvanised steel pipe, the standard material for cold water supply from the early twentieth century through to the 1960s across NSW, corrodes progressively from the inside out as the zinc galvanising layer is consumed by the water flow over decades. Once the zinc layer is exhausted, the underlying steel corrodes rapidly, producing the reddish-brown discolouration in hot water that many owners of older NSW properties experience. A galvanised steel cold water supply system that is producing discoloured water, has restricted flow compared to the original installation, or has experienced one burst in an accessible location is statistically likely to experience further bursts in adjacent sections within a short period, because the entire system is at the same stage of corrosion. Repairing a single burst in a failing galvanised system without assessing whether staged full replacement is more cost-effective than repeated single repairs is one of the most common missed opportunities in residential plumbing maintenance.

Cross-linked polyethylene (PEX) and polybutylene pipe were introduced into NSW residential construction from the late 1980s and 1990s respectively as flexible, easy-to-install alternatives to copper. PEX pipe from reputable manufacturers including Rehau, Pexal, and Ipex has proven durable in Australian conditions when correctly installed, and failures in modern PEX systems are almost always at push-fit or compression fittings rather than in the pipe body itself. Polybutylene pipe, identifiable by its grey colour and typically installed in NSW homes built between approximately 1985 and 1995, has a documented history of premature failure in Australian chlorinated water supplies. The chlorine used by Sydney Water and other NSW utilities for disinfection degrades polybutylene over time, causing the pipe to become brittle and crack. Properties of this construction era with original grey polybutylene supply piping and a history of repeated unexplained leaks should be assessed for staged or full system replacement rather than ongoing single-point repairs. Our leaking tap repairs guide covers related water supply maintenance including faulty isolating valves and compression fitting failures that produce slow leaks rather than sudden bursts but can cause sustained water damage when undetected.

Under-Slab and Concealed Pipe Repairs in NSW

A burst pipe under a concrete slab is the most expensive residential burst pipe scenario in NSW, combining the cost of leak detection, concrete cutting, pipe repair, and slab reinstatement into a total scope that regularly exceeds $5,000 and can reach $8,000 or more depending on the slab thickness and the floor finish above. The first challenge is locating the leak precisely enough to minimise the area of slab that must be cut, because cutting a large area to search for a leak that could be found with electronic detection adds unnecessary cost and delays the repair.

Acoustic leak detection uses a listening device pressed against the slab surface or inserted into accessible pipe access points to identify the characteristic sound signature of pressurised water escaping through a hole or crack in the pipe. The technique works best on metallic pipes under pressure, where the leak sound is distinct and the signal strength decreases with distance from the leak point, allowing the operator to triangulate the position to within 300mm to 600mm in favourable conditions. Thermal imaging using an infrared camera identifies temperature differentials at the slab surface caused by escaping water that is either cooler (cold mains) or warmer (hot water service) than the ambient slab temperature. Neither method is infallible in all conditions, and a combination of both approaches is the standard practice for a difficult under-slab location job. The cost of a specialist leak detection service in NSW ranges from $400 to $1,200 depending on the area to be surveyed and the detection method used, and this cost is money well spent if it allows the slab cut to be targeted at a 500mm diameter area rather than a 3 metre trench.

Concrete saw-cutting for under-slab pipe access requires a licensed contractor with appropriate equipment, and the reinstatement of the slab after the repair requires concrete that matches the specification of the original pour as closely as possible to ensure the structural continuity of the slab is restored. For slabs with a tiled finish, the tile reinstatement after slab repair is a separate trades scope that almost never achieves a perfect colour and texture match with the existing tiles, particularly for tiles that have been discontinued or have faded with age. Property owners should be realistic about the aesthetic outcome of a tile reinstatement over a slab cut and factor this into their decision about whether to pursue direct repair or investigate whether pipe relining or a pipe reroute avoiding the slab is a viable alternative. Our pipe relining and drain repairs guide covers relining as an alternative to slab cutting for drain pipes under slabs, where the pipe geometry allows a liner to be installed from inspection points without any slab penetration.

Pipe rerouting as an alternative to under-slab repair is appropriate where the damaged pipe is part of a run that can practically be rerouted through an accessible wall cavity, roof space, or external surface-mounted run. A hot water supply pipe that runs under the slab from the hot water unit to a bathroom at the back of the house might be rerouted through the wall cavity of a corridor, eliminating the under-slab section entirely and replacing it with accessible, maintainable pipe that will never require slab access for future repairs. The reroute costs more than a direct under-slab repair in materials and labour, but eliminates the slab cutting and reinstatement costs and leaves the property in a better long-term maintenance position. A licensed NSW plumber who takes time to understand the pipe layout and discuss the reroute option before recommending slab cutting is providing the quality of advice that genuinely serves the property owner's long-term interests.

Underground Water Main Repairs in NSW

Underground water mains on private property in NSW are typically the cold water supply pipe running from the water meter at the front boundary to the building, and occasionally secondary supply runs from the main to outbuildings, pools, or irrigation systems. These pipes are commonly 20mm or 25mm copper, 20mm or 25mm polyethylene, or older galvanised steel, buried at depths ranging from 300mm in sandy garden beds to 600mm or more under driveways and paths. Failures in buried supply mains typically first manifest as unexplained high water consumption visible on the water meter, soggy or unexpectedly green patches in the garden, or moisture appearing at the base of walls.

The water meter provides the most reliable early indicator of a buried supply leak. With all taps and water-using appliances off, observe the meter's low-flow indicator, which is typically a small dial or digital display that rotates with any flow through the meter. Any movement in this indicator when all water is off confirms there is flow somewhere in the supply system, which on a property with no running toilets or dripping taps indicates a leak in the buried supply main. Sydney Water's website provides guidance on how to read your specific meter type, and the Service NSW website provides access to water utility contact details for reporting meter faults or suspected main breaks in the public supply system.

Excavating a buried supply main in NSW requires Dial Before You Dig notification before any digging commences, as other utility services including electricity, gas, telecommunications, and Sydney Water sewer mains may be buried in proximity to the water supply line. The free Dial Before You Dig service, contactable through its national website, returns drawings showing the locations of utility assets in the vicinity of the proposed excavation, and the plumber must follow the safe excavation procedures specified in the returned drawings to avoid damaging other services. Failing to lodge a Dial Before You Dig enquiry before excavating is a breach of the Work Health and Safety Act 2011, and the cost of repairing a damaged electricity or telecommunications cable discovered during an unlodged excavation falls entirely on the party who caused the damage.

The repair material for a buried supply main depends on the existing pipe material and the extent of the failure. For a localised failure in a copper or polyethylene main that is otherwise in good condition, a section repair replacing only the failed length with matching material is appropriate. For an older galvanised steel main with a history of failures or with visible widespread corrosion identified during excavation, replacement of the full main run with new polyethylene pipe conforming to AS/NZS 4130 is the more cost-effective long-term solution rather than patching a pipe that will require repeated attention. Polyethylene water main pipe is joined using butt fusion or electrofusion fittings, which produce a joint of equivalent or greater strength than the pipe body and eliminate the failure mode of threaded or mechanical fittings in aggressive soil environments. Our new home plumbing guide covers the supply main installation standards for new residential construction in NSW, including the correct burial depths, pipe class requirements, and bedding specifications for different soil conditions.

Sydney Water Responsibility Boundary for Burst Pipes

Understanding where Sydney Water's responsibility for water supply infrastructure ends and the property owner's responsibility begins is essential before calling a plumber for a suspected water main burst. Sydney Water owns and is responsible for maintaining the water main in the street and the service pipe up to and including the meter assembly at the property boundary. The property owner is responsible for all pipework on the property side of the meter, from the meter isolation valve to every tap and outlet in the building.

If the visible signs of a water main burst, including a sinkhole in the footpath, water bubbling from the road surface, or a large wet area in the verge, are on the public side of the property boundary, this should be reported to Sydney Water's 24-hour fault line immediately rather than to a private plumber. Sydney Water will attend, confirm the fault location, and carry out the repair at no charge to the property owner. If the wet area is inside the property boundary, the fault is almost certainly in the private supply main and is the property owner's financial responsibility. In cases where the wet area straddles the boundary or the meter box location is ambiguous, calling Sydney Water first to inspect and confirm the boundary of their responsibility before engaging a private plumber is the correct approach. Hunter Water and Essential Energy follow the same general responsibility boundary principle in their respective service areas. The Service NSW website provides contact details for all NSW water utilities.

A specific and frequently misunderstood situation arises when a water meter registers high consumption but no visible leak can be found on the property. Sydney Water provides a rebate scheme for properties where a concealed leak has resulted in unusually high water bills, subject to the property owner providing evidence that the leak has been repaired by a licensed plumber. The rebate applies to excess water charges above the normal consumption level during the leak period and can provide meaningful financial relief on bills that have been elevated for several months before the leak was detected. Contact Sydney Water directly for the current terms and application process for the concealed water leak rebate, as the conditions and maximum rebate amount are updated periodically.

Burst Sewer and Drain Pipe Repairs in NSW

A burst or collapsed sewer pipe presents differently from a burst water supply pipe because the sewer system operates under gravity rather than pressure, meaning the failure manifests as blockage and sewage backup rather than as a pressurised water release. The symptom of a structurally failed sewer pipe is typically a recurring blockage that resists clearing, soil subsidence or sinkhole formation above the pipe alignment, sewage odour from garden areas, or unexplained wet patches in the garden that do not coincide with rainfall. A CCTV inspection is the diagnostic tool for confirming whether these symptoms are caused by a structural pipe failure rather than a clearable blockage.

The repair approach for a failed sewer drain in NSW depends on the CCTV findings, following the same relining versus excavation decision framework covered in detail in our pipe relining and drain repairs guide. A pipe with a localised collapse or severe offset requires excavation and section replacement, while a pipe with cracking, joint deterioration, or root intrusion in an intact alignment is a strong candidate for CIPP relining that avoids excavation entirely. For older clay sewer pipes in established inner Sydney suburbs where the drainage alignment runs under established paving, tiled paths, or landscaping, relining is almost always the more cost-effective approach when the pipe condition allows it. Our blocked drains guide covers the initial investigation and clearing process that precedes the CCTV inspection for a structurally suspect sewer drain.

The public sewer main is Sydney Water's responsibility, but failures at the junction between the private drain and the public main are a common source of confusion. The junction is the point where the private drain from the property connects into the Sydney Water sewer main, typically in the road reserve. Joint displacement or deterioration at this connection point can cause blockages and sewage backup that feels like a private drain problem but is at the boundary between private and public infrastructure. Sydney Water can inspect and confirm whether the junction connection is within their maintenance responsibility, and they should be the first contact for any blockage or drain failure that may involve the public main or the junction connection.

Water Damage and Insurance for Burst Pipes in NSW

Water damage from a burst pipe in NSW is typically covered under a standard home and contents insurance policy as a sudden and accidental event, subject to the policy's specific conditions and exclusions. The key distinction in most NSW policies is between sudden damage, which is covered, and gradual leakage or seepage over time, which is frequently excluded. A pipe that bursts suddenly and floods a room in minutes is a covered sudden event. A pinhole leak in a copper pipe that weeps slowly into a wall cavity over six months, eventually causing mould growth and structural timber damage, may be classified as gradual deterioration and excluded from the policy. Reading the policy's water damage provisions carefully and understanding the distinction between sudden and gradual damage is essential before assuming a claim will be covered.

The Australian Financial Complaints Authority is the external dispute resolution body for insurance disputes in Australia, and it handles a significant volume of complaints each year related to home insurance water damage claims where insurers have declined cover on the basis of the gradual vs sudden distinction. AFCA's published determination records show the specific factual and policy wording factors that have been decisive in these disputes, and reviewing relevant past determinations can help a property owner understand whether their specific circumstances are likely to be treated as a covered sudden event or a gradual deterioration exclusion before engaging in a protracted dispute with their insurer.

Water damage remediation following a burst pipe involves moisture mapping of the affected areas using calibrated moisture meters and thermal imaging, placement of industrial drying equipment including dehumidifiers and air movers to extract moisture from structural materials, and documentation of the drying progress over typically five to ten days until the moisture readings return to ambient levels. Reputable water damage remediation contractors in NSW follow the Australian Standard AS/NZS 3666.1 for air handling and water systems, and their process documentation provides the evidence base for the insurance claim. Do not use domestic fans or heaters as substitutes for specialist drying equipment; they circulate moisture-laden air without extracting it, extend the effective drying time, and fail to document the drying process in a form acceptable to insurers. The NSW Fair Trading website provides guidance on selecting licensed contractors for remediation work and the consumer protections that apply to home repair contracts in NSW.

For leases and rental properties in NSW, the NSW Civil and Administrative Tribunal has jurisdiction over disputes between landlords and tenants regarding responsibility for burst pipe repairs and the associated water damage remediation. Under the Residential Tenancies Act 2010, landlords are responsible for maintaining the property in a reasonable state of repair, which includes repairing burst pipes promptly. Tenants who suffer personal property damage or are unable to occupy the property due to an unrepaired burst pipe have recourse through NCAT for compensation and urgent repair orders if the landlord fails to act within a reasonable timeframe.

Common Mistakes NSW Property Owners Make with Burst Pipes

Not knowing where the water meter isolation valve is located before an emergency is the single most avoidable cost amplifier in a burst pipe event. Every additional minute of uncontrolled flow before the supply is isolated adds to the water volume that must be extracted, dried, and possibly removed along with damaged building materials. Walk to your meter box today, confirm the valve operates freely, and make sure every adult in the household knows where it is and how to turn it off.

Repairing a single burst in a failing galvanised steel system without addressing the broader pipe condition is a mistake that results in repeated callouts over the following months or years. A galvanised pipe that has corroded enough in one location to burst has the same internal corrosion throughout its length. A plumber who repairs the visible burst and mentions the overall pipe condition as a consideration for future planning is giving genuinely useful advice, not trying to upsell unnecessary work.

Attempting temporary repairs with pipe repair clamps, self-amalgamating tape, or push-fit connectors rated for low-pressure residential plumbing on a pressurised supply main is a decision that occasionally works and frequently does not. These products have legitimate uses for low-pressure applications or as a genuine temporary measure to hold a repair overnight until a licensed plumber can attend. They are not a permanent solution on a pressurised supply main, and a failed temporary repair that lets go while the owner is away can cause more damage than the original burst did.

Failing to photograph the damage before cleanup is a documentation failure that reduces the recoverable value of an insurance claim. Insurers assess the scope of damage based on evidence, and a property owner who cleaned up and dried out the affected area before the insurer's assessor visited has removed the evidence the claim was based on. Take photographs and video before moving anything, note the time and date, and keep a written record of the sequence of events from when the burst was first noticed to when the plumber arrived and isolated the supply.

Burst Pipe Repair Costs Across Sydney

Sydney burst pipe repair pricing reflects the strong variation in access conditions, pipe material prevalence, and ground conditions across the metropolitan area. Inner city locations with sandstone below ground, narrow site access, and older mixed-material plumbing carry the highest repair costs. Western Sydney's newer housing with predominantly PVC and polyethylene supply systems and straightforward ground conditions is typically the most cost-competitive zone for underground repairs.

Properties in inner Sydney suburbs built between 1900 and 1960, including the inner west, eastern suburbs, and lower north shore, are the areas where galvanised steel supply plumbing is most commonly still in active service, and these are the properties where a single burst pipe repair is most likely to be the first in a series rather than an isolated event. A licensed plumber who inspects the visible sections of the supply system during the repair visit and provides a frank assessment of the overall condition is acting in the property owner's interest. Budgeting for staged supply system replacement in these properties is a realistic and financially sensible approach rather than treating each burst as an independent event. Our kitchen plumbing guide and laundry plumbing guide cover the fixture plumbing replacement work that is typically carried out alongside supply system upgrades in older NSW properties.

Burst Pipe Repair Costs in Regional NSW

Regional NSW burst pipe repair pricing is generally 10 to 20 percent below Sydney metro rates, with the exception of very remote locations where travel time represents a significant portion of the total cost. Essential Energy's plumbing service area covers much of regional NSW, and the water supply systems in older regional towns including Orange, Bathurst, Wagga Wagga, Tamworth, and Armidale contain the same mix of ageing copper and galvanised steel infrastructure found in comparable Sydney suburbs, with similar failure patterns and repair requirements.

The New England and central tablelands areas of NSW experience more frequent pipe failures related to cold weather than the Sydney basin, because overnight temperatures in towns such as Armidale, Glen Innes, and Oberon regularly fall below zero degrees Celsius during winter. While true pipe freezing failures are relatively uncommon in NSW compared to alpine regions, pipes in uninsulated wall cavities or subfloor spaces on elevated country properties can reach temperatures at which the expansion of freezing water causes joint failure or splits in older brittle pipe materials. Insulating exposed pipe sections in unheated spaces is a low-cost preventive measure that is particularly relevant for properties in the tablelands and New England regions. Our gas fitting guide and gas appliance installation guide cover heating system installation work that is often coordinated alongside burst pipe rectification in older regional properties where inadequate building insulation is a contributing factor.

What to Look For in Burst Pipe Repair Quotes in NSW

Burst pipe repair quotes in NSW should distinguish clearly between the emergency callout component (attendance, isolation, and initial assessment), the repair scope (what pipe is being replaced and with what material), and the reinstatement scope (concrete, tiles, paving, or landscaping being restored after excavation or cutting). These three components have different cost drivers and different warranty implications, and a quote that bundles them all into a single figure without breaking them down does not provide the transparency needed to compare quotes accurately or to understand what is covered if the repair develops a problem later.

Ask the plumber specifically what pipe material they intend to use for the repair and whether it matches the existing system or represents an upgrade. Replacing a section of galvanised steel with a slip-in PVC repair fitting may resolve the immediate burst but creates a mixed-material connection that requires a correctly rated transition fitting to prevent galvanic corrosion between the dissimilar metals. A licensed plumber who specifies the transition fitting and explains its purpose is demonstrating the level of detail that protects the repair quality over time. Ask also what warranty applies to the repaired section and whether the warranty is for the materials, the workmanship, or both.

Licence verification applies equally to emergency burst pipe callouts as to any other plumbing work. The time pressure of an emergency is sometimes used as a reason to skip this step, but the NSW Fair Trading licence check takes two minutes and confirms whether the person attending holds a current plumbing licence. An unlicensed person performing plumbing repairs creates liability for the property owner, and the work will not be certifiable under the plumbing and drainage framework. Ask for the licence number at the time of booking and verify it before the plumber arrives if possible, or at the time of arrival before authorising any work to begin. The SafeWork NSW website covers the work health and safety obligations for excavation associated with underground pipe repairs, including the shoring requirements for any trench deeper than 1.5 metres and the Dial Before You Dig obligations that apply before any ground is broken.

Preventing Burst Pipes in NSW Properties

Regular inspection of accessible pipe sections during routine maintenance visits is the most practical preventive measure for residential burst pipes in NSW. A licensed plumber attending for any scheduled maintenance work should be asked to inspect visible pipe sections, check isolation valves for free operation, and note any early signs of corrosion, pinhole weeping, or joint seepage that indicate a pipe approaching failure. Addressing these early signs with a targeted repair or pipe section replacement is dramatically cheaper than responding to a sudden burst, and it avoids the associated water damage and disruption.

For properties with older galvanised steel supply systems, asking a licensed plumber to carry out a targeted inspection of the full supply system and provide a condition assessment and staged replacement plan is money well spent. The inspection typically takes two to four hours, costs $300 to $600, and provides a clear picture of which sections are at high risk of imminent failure, which sections have remaining useful life, and what a staged replacement programme would involve. This approach allows the replacement work to be budgeted and planned rather than funded reactively in emergency circumstances. Our stormwater drainage guide and rainwater tank plumbing guide cover related maintenance work for the external water management systems that are often assessed and maintained alongside the internal supply system during a property-wide plumbing inspection.

Maintaining water pressure within the normal range for the property is a long-term pipe protection measure that is often overlooked. The NSW Plumbing Code specifies a maximum operating pressure of 500 kPa at any fixture outlet, and Sydney Water's supply pressure in some areas, particularly elevated distribution zones, can exceed this at times of low demand. A pressure limiting valve (PLV), also called a pressure reducing valve, installed on the supply main at the property entry point maintains a constant downstream pressure regardless of upstream variation and significantly reduces the stress on pipe joints, fittings, and fixtures throughout the system. Properties that have experienced multiple unexplained pinhole leaks or fitting failures should have the supply pressure measured and a PLV installed if the pressure is consistently above 500 kPa. Post your burst pipe repair job on The Quote Yard to connect with licensed NSW plumbers for emergency response, underground repairs, under-slab detection, and supply system assessments. The Standards Australia website provides access to the Australian Standards governing water supply pipe materials and plumbing system design requirements in NSW.