10 Common Plumbing Problems in NZ Homes

10 Common Plumbing Problems in NZ Homes (and How to Fix Them)

At some stage, virtually all New Zealanders will come up against a
plumbing problem in their homes. A wide variety of typical plumbing
issues, such as clogged drains or concealed pipe bursts, may intensify
if not addressed promptly. In some cases, simple solutions are
available at home, but for more serious issues, you’ll need to call a plumber. Here, we delve into 10 frequent plumbing issues found
throughout Kiwi homes and show you when DIY might work or when you
should seek expert help. We also help you understand and resolve severe
problems, like a leaking hot water tank, a backed-up outdoor sewer
pipe, or a stoppage deep within your property’s pipes.

Blocked Drain: The Most Common Plumbing Problem

Many New Zealand homes are faced with the pain of recurring blocked
drains. Blocked drains can manifest as clogged sinks, non-draining
baths or backed-up outside pipes and they represent much more than mere
annoyances.

Blockages sometimes result from everyday behaviours such as throwing
food waste into the kitchen sink, neglecting to remove hair from
bathroom drains, and flushing things that don’t break down into the
toilet. Tree roots are known to cause blockages in New Zealand’s older
homes, especially in clay or ceramic pipe systems.

How to Fix It:

Kitchen Sink: Start by pouring very hot water down the
drain. Afterwards, sprinkle baking soda and pour vinegar into the
drain. Close off the drain, let it sit for 10 minutes, and follow up
with hot water.

Bathroom Drain: Take off the cover and use either a
drain snake or a hair removal tool designed for the job. Sometimes, a
plunger can successfully suction out waste blocking your drain.

When to Call a Plumber: Professional service is needed
if you are unable to clear the blockage yourself or if it keeps
occurring promptly. Skilled plumbers turn to advanced tools such as
CCTV inspection and high-pressure water jetting to locate and fix the
blockage in your pipes.

Why It Matters: Failing to unclog a drain can result
in severe problems. Without intervention, overflowing drains, bad
odours, and water damage can rapidly worsen and cause more damage in
your home.

Water Heater Leaking from Bottom

It’s concerning if you notice any leaking from your water heater, but
coming from the bottom is especially serious. Most commonly, this is a
sign that major internal issues or years of accumulated wear and tear
have occurred. A major problem in many New Zealand homes that still
have older electric or gas storage heaters is the development of
hardened minerals and metal breakdown inside those systems.

Common Causes:

• 
  Faulty Temperature & Pressure Relief Valve: It
  controls unsafe changes in pressure and heat. A broken T&P valve will
  either leak or burst.
  


• 
  Internal Corrosion: There will be internal rusting if
  it is not preserved routinely.
  


• 
  Cracked Tank: Either swelling or deterioration of
  the tank can result in a crack at the bottom.
  

Fix:

• 
  Step 1: Shut down both the power and gas and close
  the cold water valve.
  


• 
  Step 2: Make sure the condition of the drain pan is
  checked properly. Also, check the conditions underneath the water
  heater.
  


• 
  Step 3: In that case, the only answer is to replace
  the water heater entirely. If your water heater is more than eight to
  ten years old, it could soon need replacing.
  

Why It Matters: Leaking water heaters drive
electricity costs up and put your home at risk for mold or floor and
cabinet damage. Speedy action may save you from expensive emergencies.

Outside Drain Overflowing

Flooded outdoor drains occur most often following periods of heavy rain
or after repeated use of hose pipes. A lack of free movement of water
causes it to build up around your property, risking harm to plants,
paved areas, or your home itself.

Common Causes:

• 
  Deposits from plant matter, dirt, and other outdoor material build
  up.
  


• 
  Slow accumulation of organic particles clogs your stormwater system.
  


• 
  Pipes have failed because tree roots have grown through them.
  

How to Fix It:

• 
  Manual Cleaning: Take off grilles to prevent
  obstructions from leaves or soil.
  


• 
  Flushing: Give your outdoor drain a thorough flush
  with a hose or pressure washer to check for, fix and prevent mild
  clogs.
  


• 
  Preventative Measures: Protect your gutters with a
  simple mesh cover.
  


• 
  Advanced Diagnosis: If regular blockages develop, a
  CCTV inspection may expose damage to your plumbing system or point to
  obstructions beyond your reach.
  

Why It Matters: Continued overflow may indicate
trouble with your home’s stormwater drainage system or a problem with
the municipal sewer line. Quick resolution of these problems helps
safeguard both your property and municipal property.

Shower Not Draining

A slow shower drain isn’t just annoying; it may indicate a more serious
problem with your plumbing. Common problems contributing to slow drains
include hair, soap deposits, and oils that build up in the section of
the pipe hidden behind the drain cover.

Quick Fix Options:

• 
  Initial Cleaning: Get rid of hair from the surface
  using a complex tool or a bent piece of wire.
  


• 
  Chemical-Free Clean: Combine baking soda and
  vinegar, pour them into the drain, wait for 15 minutes, and then add
  boiling water.
  


• 
  Drain Snake: When you have a stubborn clog, use a
  manual or electric snake to fish out clogs further in the pipes.
  

When to Worry: If water drains slowly or if other
appliances such as the toilet or basin begin to overflow, a blockage
might be in the main drain or sewer system.

Main Sewer Line Clog

Most plumbing problems can be serious, but having a blockage in your
main sewer line is one of the most serious that can arise. A blockage
at this point can affect the entire plumbing system in your house by
preventing it from working properly.

What to Do:

• 
  Stop Water Usage: Stop water flow as soon as possible
  to prevent risks of backups.
  


• 
  Call a Plumber: Licensed people are allowed to use
  CCTV equipment to inspect sewer lines.
  


• 
  Check Repair Options: Methods for solving this issue
  could be hydro jetting, using rods for mechanical cleaning, or
  relining the pipes. Sometimes, when serious problems occur, it is
  necessary to excavate and replace the pipe.
  

Why It Matters: A lack of attention can lead to
blocked sewer lines within your house, which can be very harmful and
cause significant damage.

Underground Leak Detection: Finding the Invisible

Often, the worst sorts of damage can go on below your home, causing
problems that aren’t visible. Usually, people find out about
underground leaks once their water bill gets very expensive or the
ground in their yard turns into a swamp.

Signs to Watch for When You Think There Is a Leak:

• 
  Areas in your yard or garden that remain constantly wet or become wet
  suddenly.
  


• 
  Discovering cracks in the concrete of your pathways or driveways.
  


• 
  Water coming out of your taps does not flow as strongly as it used to.
  

Steps to Take:

• 
  Water Meter Test: Check the water meter and close all
  the taps. If your car is still powered on, it is very likely that
  there’s a leak.
  


• 
  Hire a Specialist: Plumbers can spot leaks in the
  underground pipes without needing to break up your lawn using
  advanced metering techniques.
  

Why It Matters: Early discovery of any leak in the
underground system can save the foundation, reduce water consumption,
and lower costly repairs later.

Water Leakage: Taps, Pipes, and Fixtures

Water dripping from the taps or constantly leaking from pipes might go
unnoticed, but they increase your bills and can cause damage slowly.
Quite often, the cause can be fixed easily if you take care of it right
away.

Common Sources:

• 
  Taps: Most often, it is either a worn-out washer or
  damaged cartridge that leads to such a problem.
  


• 
  Pipes: Slow leaks can happen from corrosion, shifts
  in the earth, or a faulty installation.
  


• 
  Fixtures: Loose plumbing or broken gaskets could be
  found in toilets and dishwashers.
  

What You Can Do:

• 
  Initial Check: Turn off the water to check out the
  damaged part of the pipes.
  


• 
  DIY Fixes: Try adding washers, seals, or using tape
  joints to stop the leaking momentarily.
  


• 
  Call a Plumber: Any continuous leaks inside the wall
  should be handled by professionals.
  

Why It Matters: Over a period of time, even little
leaks can cause damage to the house structure, spoil wood, grow
dangerous mould and all are hard to address and can be risky to your
health.

Blocked Drain Outside

Although a full outdoor drain makes the problem clear, a blocked or
slow exterior drain may not be noticed until it becomes a serious
issue. Items and sediment in gardens as well as damaged pipes can add
to the polluted water.

How to Tackle It:

• 
  Start at the Surface: Remove any large debris you can
  see and clean the grates.
  


• 
  Use Cameras: Still Blocked? With the help of CCTV
  cameras, professional plumbers can explore and identify serious
  problems in the pipe.
  

Why It Matters: Blocked drains outside may result in
water spilling into your home or garden. If problems with your drains
keep happening, it might be because of cracked pipes or tree roots
which require major repairs.

Low Water Pressure

Having low water pressure can make it unpleasant to perform everyday
jobs. A weak pressure from the taps or slow filling of a kettle can
negatively influence the comfort and running of the home.

Causes:

• The accumulation of minerals or sediment in pipelines.


• Leaks in underground water or rusted water supply pipes.

How to Improve It:

• 
  Isolate the Problem: Narrow down if only one area is
  affected or the whole house is being affected.
  


• 
  Clean Fixtures: Unscrew the fittings in the taps and
  showerheads and clean them.
  


• 
  Professional Help: Numerous low-pressure faucets may
  be the result of underground leaks or pipes that have seen better
  days. You can get professional advice or service to fix it.
  

Why It Matters: It is possible that regularly low
water pressure is a sign of rusted pipes or small blockages which
should be handled before they lead to bigger problems.

Toilet Continuously Running

Even if that hissing in your toilet is not a major concern, it is still
costing you. When a toilet runs continuously, it wastes hundreds of
litres of water every day.

Likely Causes:

• 
  The flapper is the part that may seal off your toilet, and a crooked
  position can prevent proper sealing.
  


• A float that is stuck, causing a tank to be overfilled.


• A fill valve that remains open even after turning it off.

How to Fix It:

• 
  Cistern Check: Open the tank's lid and have a look
  at the chain, flapper, and float to inspect them.
  


• 
  Replace Parts: Most hardware stores carry DIY repair
  kits that aren’t too expensive.
  


• 
  Adjustment: Adjust the float so the water stops
  filling when it reaches the mark on the float head.
  

Why It Matters: Besides flooding the bathroom, a
running toilet could mean the components inside are worn or were not
installed properly. Over the years, this may affect the water pressure
in your house and harm its plumbing.

Conclusion

Prompt attention to problems such as a slow-draining sink, shower or
overflowing outdoor drain as well as issues involving a leaking water
heater or clogged main sewer line can help avoid extensive damages to
your home. By keeping your plumbing up-to-date and paying attention,
you can control water leaks, stop your outdoor drains from getting full
and identify deep plumbing issues. Recognise the difference between
problems that can be fixed yourself and situations that require a
professional, and make the right decision to keep your plumbing in top
condition.

Be it a drain blockage outside your home or a need for a
better-working shower, any of these problems are well known and can be
fixed easily in some cases or require a trained plumber in others. Stay
on the lookout for minor problems and fix them right away to avoid
- bigger headaches down the line.
+ bigger headaches down the line.