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9 min read

Updated October 19, 2026

Who Pays For a Blocked Drain: Tenant, Landlord or Sydney Water?

What NSW tenancy law and the Sydney Water boundary rule say about who pays, and how a camera inspection and report can settle the question in one visit.

Quick answer

In NSW, the landlord is responsible for blocked drain costs unless the tenant causes it(wipes, sanitary items, foreign objects). Sydney Water is responsible for blockages in the main sewer beyond your property boundary. Anything on your side is generally the owner’s responsibility if you are the tenant. If you are the owner of the house, it is your responsibility. A CCTV camera inspection shows exactly where the blockage sits, settling the issue in one visit.

Owner-occupiers

If you own and live in the house, the plumbing on your side of the boundary is generally your responsibility. From sewer to the connection point, the stormwater to the street or trench, and the fixtures inside your property, you are in charge of the blockages here. Sydney Water is responsible for the main in the street and, in most cases, the connection at the boundary.

Tenants and landlords

Under NSW tenancy law, the landlord’s responsibility is to keep the property in reasonable repair, including its plumbing and drainage. This covers fair wear and tear, structural issues and problems caused by ageing pipes. Tree roots, cracked pipes, collapsed sections and failing joints will generally fall to the owner.

A tenant may be responsible when the blockage was caused by misuse or neglect. Common examples include flushing wipes, sanitary products, cotton buds or other foreign objects down the toilet, or pouring fat and food scraps into the kitchen sink.

Strata

Units and townhouses can be trickier. A pipe serving only your fixtures is usually the lot owner’s responsibility, while shared pipes are generally common property managed by the owners corporation.

For Inner West terraces, this completely changes as a single sewer line is shared along the back of the row. Since every scheme has its own by-laws, the report helps us understand and helps the strata manager address the issue effectively. 

Sydney Water

If the blockage is in the street main or at the boundary connection, Sydney Water is responsible for it. In such a scenario, contact Sydney Water on 13 20 90. If our inspection shows the problem is on their side of the boundary, we’ll tell you rather than charging you to work on infrastructure that isn’t yours.

The practical answer

A CCTV drain inspection gives you a report showing where the blockage is, what caused it and what condition the pipe is in. That evidence can then be given to the landlord, tenant, strata manager or Sydney Water. Knowing the cause can save your time and help you clear disputes regarding who should cover the repair costs.

The Rule in One Sentence

In NSW, the landlord has a legal obligation to keep the property’s plumbing and drainage in good repair. A blockage caused by wear and tear, ageing pipes, tree roots or structural failure will generally be the landlord’s responsibility. A blockage caused by what the tenant has put down the drain, or by misuse or neglect, can be the tenant’s responsibility.

Blockages the landlord almost always pays for

The landlord is generally responsible for tree roots entering a cracked clay sewer, old pipes, cracked or collapsed sections, and dropped joints. If storm water drain is filled with leaves from the landlord’s trees, he is responsible. 

In strata, a blockage in a shared pipe will generally be the owners corporation’s responsibility rather than the individual tenant’s.

A drain that was already recurring before the tenant moved in is the owner’s responsibility. This is why the condition report at the start of the tenancy can be useful.

The same applies to plumbing issues caused by the age or condition of the property.

Under the Residential Tenancies Act, a blocked toilet can be an urgent repair when it is the only toilet at the property. The landlord must arrange urgent repairs promptly. A tenant may also be able to organise urgent repairs themselves in certain circumstances and seek reimbursement of up to $1,000, in case the landlord cannot be contacted.

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Blockages the tenant can be charged for

Wet wipes, paper towel, sanitary products, cotton buds and nappies flushed down the toilet. Fat, oil and food scraps poured down the kitchen sink until it blocks with grease. Hair buildup in a shower drain that was never cleaned, though this one is argued both ways. Foreign objects, toys and the occasional phone. Pouring boiling water or chemical cleaners into old pipes and cracking them. Paving or gardening over a stormwater grate. If the evidence points to tenant misuse, the landlord can pay the plumber and recover the cost from the tenant, and property managers will usually ask the plumber for a written report before they do.

Why the plumber’s report settles most disputes

The argument is always about the cause, and the cause is inside the pipe. A CCTV drain inspection after the clear shows whether the blockage was a plug of wipes at the first bend or a root mass through a cracked joint twenty metres out, and the report says so in plain words with stills from the footage. That is why we camera every job and give a written report as standard. A tenant who was blamed for roots, or a landlord being asked to pay for a drain full of wipes, has evidence rather than an opinion. It also protects the tenant later: a report that says the pipe is cracked and roots will return is on file when the drain blocks again.

What tenants should do when a drain blocks

Report it to the landlord or agent in writing the same day, even if you think you caused it; delays cost everyone more and a tenant who does not report a problem can become liable for the further damage. Stop using the affected fixture. Do not pour chemicals down it. If it is the only toilet, or sewage is backing up, it is an urgent repair and you can call a licensed plumber yourself if the landlord cannot be reached, keeping the invoice and the report. If the landlord’s plumber blames you, ask for the camera footage or report before you agree to pay.

Checking Condition of Pipe Interior Via Camera

Blockages The Tenant Can Be Charged For

Common examples when the tenant can be charged for include wet wipes, paper towels, sanitary products, cotton buds and nappies flushed down the toilet. Pouring fat, oil and food waste into a kitchen sink can also lead to a buildup that eventually blocks the line and the responsibility lies with the tenants.

Other examples include toys and other foreign objects dropped into a toilet, and damage caused by inappropriate DIY attempts. Hair buildup in a shower drain can be harder to prove. Paving or gardening over a stormwater grate is another example. Using a drain snake carelessly, pouring chemicals or boiling water into fragile pipes can also cause damage.

If the evidence points to tenant misuse, the landlord may pay the plumber first and then seek to recover the cost from the tenant. Property managers will often ask for a written report before deciding whether a landlord charge is justified.

Why The Plumber’s Report Settles Most Disputes

The argument about who has to pay for the dispute can be solved once the cause is identified. A CCTV drain inspection after clearing can show the difference between a plug of wipes near the first bend and a mass of roots growing through a cracked joint further along the line.

A tenant who has been held accountable for a blockage caused by roots can show the footage and the detailed report. In case the report shows collapsed pipes and chances of recurring root blockages in future, the tenant can show it when they face a drain blockage. A landlord being asked to pay for a drain full of wipes can also show the report to prove that it is not his responsibility.

What Tenants Should Do When a Drain Blocks

Tell the landlord or agent in writing as soon as you notice the problem, even if you think you are responsible for the blockage.  Make sure you stop using the affected fixture. Don’t pour chemical cleaners down the drain. This can lead to further damage and make the repair more expensive.

If the property has only one toilet and it is blocked, or sewage is backing up, treat the situation as urgent. If the landlord or agent cannot be reached, you need to arrange a licensed plumber by yourself.

If the plumber says the blockage was your responsibility, ask to see the camera footage or report before agreeing to pay.  

What Landlords and Property Managers Should Do

A blocked sole toilet or a sewage issue should be treated as an urgent repair. NSW Fair Trading expects urgent repairs to be attended to promptly.

Use a professional plumber who can inspect the line and provide a written report. That gives the owner or property manager evidence if they need to recover a legitimate cost from a tenant.

If the report shows roots, damaged pipes or an ageing sewer line, look at the proper repair rather than repeatedly paying to clear the same blockage.

For a pre-1980s property with older clay pipes, a CCTV inspection between tenancies can also identify problems before they become a much larger repair.

Strata, Units And Shared Pipes

In a strata building, a pipe serving only one apartment is generally the lot owner’s responsibility. A shared stack or main serving several lots is generally common property, making the owners corporation responsible. This is why a blocked drain in a unit can quickly become an argument between the tenant, lot owner and owners corporation.

Quick reference: Who Pays For a Blocked Drain, Tenant or Landlord

If you want the short version: Who pays for a blocked drain tenant or landlord depends on the cause, the location and the evidence.

Tree roots, cracked pipes and structural issues

Landlord’s responsibility. Roots entering sewer lines, cracked pipes, collapsed sections, dropped joints, and other damage caused by age or deterioration generally fall under the property owner’s repair obligations.

Wipes, sanitary products and foreign objects

Tenant’s responsibility. If the camera shows wipes, cotton buds, nappies or another foreign object causing the blockage, that points towards tenant misuse.

Grease and food waste in the kitchen

Usually the tenant, if the buildup occurred during the tenancy because of what was put down the sink. However, if the report shows a belly holding water or years of sediment, the landlord should be held responsible. 

Hair and soap scum in the shower

This can go either way. The duration of the tenancy, the condition of the drain and the evidence about how the blockage formed all matter. In case it is an old tenant, natural wear and tear can lead to this. For new tenants, lack of regular cleaning can lead to this. 

Blocked toilet

The landlord is generally responsible when the problem is with the pipe or plumbing. Where the property has only one toilet, the repair can be urgent regardless of who ultimately caused it.

Storm damage and heavy rain

Stormwater blockages caused by leaves, silt or heavy rain will generally be a property owner’s responsibility.

A drain snake, hot water or chemicals that damaged the pipe

The person who caused the damage may be responsible. If a tenant or a tenant damages an old pipe through an inappropriate DIY attempt, that is different from a structural pipe failure that existed beforehand.

What The Tenancy Agreement Can And Cannot Say

A tenancy agreement cannot hold a tenant accountable for every blocked drain. Any clause that removes this duty is not considered valid under the Residential Tenancies Act. Landlords must still carry out required repairs. The landlord’s legal repair obligations still apply. The agreement and condition report can record the condition of the property at the start of the tenancy, note existing drainage problems and require the tenant to report issues promptly.

The plumber’s report then adds evidence about the real condition inside the pipe. It helps establish whether the tenant responsible for the blockage is clear from the evidence, or whether the problem is more likely to be the owner’s responsibility.

Workers in Action

How NSW Tenancy Law Frames It

The Residential Tenancies Act 2010 requires landlords to provide and maintain rental premises in a reasonable state of repair. This includes the property’s plumbing and drainage system.

Tenants also have responsibilities. They must keep the premises reasonably clean and must not cause or permit damage.

Blocked drains sit between those two duties. A blockage caused by age, tree roots or structural failure is generally a landlord repair issue. A blockage caused by tenant misuse or damage can be the tenant’s responsibility.

The condition report from the start of the tenancy and the plumber’s report from the time of the blockage are important pieces of evidence. NSW Fair Trading and the NSW Civil and Administrative Tribunal can consider evidence about what caused the problem, rather than simply who received the plumber’s invoice.

Urgent Repairs And What A Tenant Can Do

A blocked or broken toilet system, burst water service, serious roof leak, gas leak, flooding, serious storm damage and faults that make the property unsafe fall within the urgent repairs provisions under NSW law.

A tenant should report an urgent problem to the landlord or agent immediately without further delay. If the landlord cannot be contacted or does not arrange the repair, the tenant may be able to organise the urgent repair through a licensed tradesperson and seek reimbursement of up to $1,000 within 14 days of giving the landlord the receipt. Keep the plumber’s invoice, report and any CCTV footage.

However, a blocked shower or kitchen sink cannot be considered an urgent repair under the Act, but leaving a drainage problem unresolved for an unreasonable period can still raise issues under the landlord’s general repair obligations.

Common Arguments, and How They Usually Land

Hair in the shower drain is often treated differently depending on the length of the tenancy, cleaning and evidence of misuse. Wipes fall under a tenant’s responsibility when the camera shows wipes causing the blockage. Grease in the kitchen line is generally tenant responsibility when the buildup clearly occurred through use during the tenancy.

Storm damage and stormwater drains are generally the landlord’s responsibility unless the tenant caused the blockage.  A drain that blocks after the tenant has moved out is the landlord’s responsibility unless the camera shows a foreign object. The plumber’s report acts as the single point of truth that can settle all the disputes. 

What Our Report Says

After clearing a blocked drain, we camera the line and provide a written report explaining the finding, the location of the blockage and the condition of the pipe. The report identifies whether the problem was foreign material such as wipes, grease caused by use, or roots and pipe damage associated with the age and condition of the property. The report is designed for the person paying for the work. It can be used by property agents to justify charges to tenants or seek the owner’s approval for repairs 

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