When it comes to household maintenance, drainage systems are often the unsung heroes

silently working behind the scenes to
carry waste and water away from your home. But while we tend to
focus on more visible issues like roof leaks or broken boilers,
neglecting your drains can lead to some of the most expensive and
disruptive problems you’ll face as a homeowner. Whether it’s a
slow-draining sink or a full blockage, knowing when to call a
professional drain plumber is key to avoiding costly consequences.

From blockages and bad smells to flooding and structural damage,
poor drainage management doesn’t just affect your comfort — it can
seriously impact your finances. Part of the problem lies in the
widespread myths and misconceptions surrounding how drains work and
how they should be cared for. These myths can encourage bad habits,
delay necessary maintenance, and even result in damage that
requires professional intervention.

In this article, we’ll debunk 10 of the most common drainage
myths — ideas that many homeowners believe but which can ultimately
cost them time, money, and peace of mind. Whether you’re a new
homeowner or have lived in the same house for decades,
understanding the truth behind these myths is the first step toward
a healthier drainage system.

Serving areas across Sussex, Surrey, Hampshire, Kent and South
London, DrainBoss Plumbing & Drainage has seen firsthand how
these myths can turn minor issues into major emergencies. With
modern tools, 24/7 availability, and no call-out fees, they help
homeowners take control of their drainage systems before problems
escalate.

Let’s take a closer look at the misconceptions that might be
hiding beneath your sink.

“It’s fine to pour grease down the sink with hot water.”

This is one of the most common — and costly — misconceptions
about kitchen drains. Many people believe that as long as they
rinse fats, oils, and grease (often referred to as FOG) down the
sink with a stream of hot water, it will safely pass through the
pipes and into the main sewer. Unfortunately, that’s not how it
works.

What actually happens is that the grease may stay liquid for a
short while, but as it cools — especially in colder parts of the
pipework or outside drainage systems — it begins to solidify. Over
time, this builds up along the inner walls of the pipes, narrowing
the passage for water and trapping other debris. Eventually, this
results in a stubborn blockage that can cause water to back up into
your sink or even flood your kitchen.

Rather than pouring it away, it’s best to collect grease in a
heatproof container — such as an old jar or tin — and once it
solidifies, dispose of it in your household waste bin. For larger
amounts, local councils often offer disposal points for used
cooking oils. Taking this small step can prevent major plumbing
issues and save you from an expensive callout.

“Chemical drain cleaners are safe and effective.”

It’s easy to see the appeal of chemical drain cleaners — they
promise a quick, no-fuss solution to a blocked sink or
slow-draining bath. But while they may offer short-term relief, the
long-term consequences can be far from ideal. These products
contain harsh, corrosive substances that pose risks to your health,
the environment, and your plumbing.

To illustrate the key differences, here’s a breakdown:

In many cases, chemical cleaners only mask the problem,
dissolving some of the blockage but leaving residue behind. Worse
still, they won’t work at all if the blockage is caused by
structural issues, tree roots, or foreign objects.

Instead, using a plunger or a mechanical drain snake is safer
and more effective for minor issues. For recurring or severe
problems, a professional drainage specialist can provide a targeted
solution — often using high-pressure water jetting or a CCTV
inspection to get to the root of the issue without causing
harm.

“Slow drainage isn’t a big deal.”

Many homeowners dismiss slow-draining sinks, baths, or showers
as nothing more than a minor nuisance. It’s easy to assume that as
long as water eventually goes down, there’s no real problem.
However, slow drainage is often the first warning sign of a
developing blockage — one that, if ignored, can lead to far more
serious and expensive consequences.

When water drains slowly, it usually means that something is
obstructing the free flow inside your pipes. This could be a
gradual build-up of grease, soap scum, hair, food particles, or
even limescale. In some cases, slow drainage may signal more
complex issues, such as tree root intrusion, partial pipe collapse,
or damage deep within the system. Left unresolved, these blockages
can become complete obstructions, potentially causing flooding, bad
odours, or even structural water damage.

Rather than brushing it off, a slow drain should prompt
investigation. Clearing minor build-ups early is often quick and
inexpensive. But if the problem persists, a professional drainage
inspection — particularly using CCTV technology — can pinpoint the
exact cause and prevent a full-blown emergency. In short: a slow
drain is never “just slow” — it’s your home telling you to act.

“You can fix any blockage yourself.”

With a quick online search and a few basic tools, many
homeowners are tempted to take the DIY route when it comes to
drainage issues. While there’s no harm in using a plunger for a
simple blockage, the idea that any drainage problem can be
resolved without professional help is not only misleading — it can
be downright dangerous.

One of the biggest risks of DIY drain unblocking is the
potential to make the problem worse. For instance, using makeshift
tools to poke or prod at a blockage can compact the debris or push
it further down the pipe. In some cases, people even damage their
pipes by forcing sharp objects inside, leading to cracks,
punctures, or dislodged joints — all of which are far more
expensive to fix than the original blockage.

There’s also the issue of misdiagnosis. Not all slow drains are
caused by surface-level clogs. Without proper equipment, it’s
impossible to know if the problem lies deeper — such as collapsed
pipework, invasive tree roots, or structural damage. Attempting to
treat a symptom without identifying the root cause often results in
recurring issues.

For anything beyond a minor inconvenience, it’s safer, faster,
and ultimately cheaper to call a qualified drainage specialist.
They’ll have the expertise and equipment to resolve the issue
properly — without guesswork.

“Drain problems are always the water company’s
responsibility.”

It’s a common belief that any drainage issue, especially if it’s
underground, is automatically the responsibility of the local water
company. While that may be true in some cases, the reality is more
nuanced — and misunderstanding this can lead to delays, confusion,
and unexpected repair bills.

In the UK, the responsibility for drains is generally split
between homeowners and the water authority. As a rule of thumb, you
are responsible for any drainage pipes within the boundary of your
property, up to the point where they connect with the public sewer.
This includes internal pipework, the lateral drains (those that run
under your property), and often shared drains that serve only your
home. Once the pipe crosses into public land or becomes part of a
shared system serving multiple properties, it usually falls under
the water company’s jurisdiction.

Knowing exactly where your responsibility ends is essential —
especially in older properties or where shared drainage systems are
involved. If a problem occurs in a section you’re liable for, the
water company won’t intervene, and you’ll need to arrange and fund
repairs yourself.

To avoid confusion, a CCTV drain survey can help identify the
layout of your drainage system and pinpoint where the issue lies —
and whose responsibility it is to fix it.

“Flushable wipes are truly flushable.”

Despite what the packaging claims, most so-called “flushable”
wipes are not truly safe for your drainage system. The word
“flushable” is largely a marketing term — it doesn’t mean the
product will break down in the same way toilet paper does. In fact,
many wipes are made from durable, non-biodegradable fibres that can
remain intact for a very long time.

Here’s what makes “flushable” wipes a hidden danger:

• They don’t disintegrate like toilet paper – Instead, they stay
  whole and clog up pipes.
• They combine with fats and debris – Leading to the formation of
  fatbergs in both domestic and public sewer systems.
• They cause recurring blockages – Especially in older pipework or
  narrow waste lines.
• They contribute to expensive repairs – Removal and clean-up of
  wipe-related clogs can be costly.
• They’re often not biodegradable – Despite eco-friendly branding,
  most do not meet recognised sewer-safety standards.

The best solution is simple: bin it, don’t flush it. Even wipes
labelled as “biodegradable” or “flushable” should be disposed of in
the bin unless explicitly certified as sewer-safe by an independent
testing body.

Changing this one small habit can dramatically reduce the risk
of household plumbing issues and help protect the wider drainage
network.

“If I can’t see the problem, it doesn’t exist.”

Out of sight, out of mind — it’s an easy mindset to adopt when
it comes to drainage. If water seems to be flowing and there are no
obvious leaks or smells, many homeowners assume everything is fine.
However, some of the most serious drainage issues develop slowly
and invisibly, only revealing themselves once significant damage
has already been done.

Cracked or misaligned pipes, tree root intrusions, and ground
movement can all cause problems deep within your drainage system
without any clear surface symptoms — at least initially. These
hidden faults can lead to persistent blockages, water leakage into
the soil, foul odours, or even subsidence around your property over
time.

This is why regular drain inspections are essential, especially
in older properties or homes with a history of drainage problems.
CCTV drain surveys allow professionals to inspect the condition of
underground pipework without any digging, identifying small issues
before they escalate into major repairs.

By the time you see surface signs, the damage is often more
complex — and more expensive — to fix. A proactive approach to
drainage maintenance not only protects your property but also gives
you peace of mind, knowing that potential problems aren’t quietly
building beneath your feet.

“It’s cheaper to fix problems as they happen.”

At first glance, it might seem logical — why spend money on
drain maintenance if nothing appears to be wrong? However, this
“wait until it breaks” mindset often results in much higher costs
down the line. When it comes to drainage systems, prevention is
almost always more affordable than cure.

Neglecting regular maintenance can allow minor issues — such as
small cracks, root ingress, or early-stage blockages — to develop
into serious problems. A partially blocked drain might take just
minutes to clear if caught early. But left untreated, it could lead
to flooding, water damage, or structural deterioration, requiring
excavation, pipe replacement, or even foundation repairs. These are
far more disruptive and costly than routine upkeep.

Real-world examples are common: a property owner ignores a
slow-draining gully, only to end up with water pooling against the
house and seeping into the basement. Or a landlord postpones a CCTV
drain survey, unaware that tree roots have already breached the
pipe — leading to sewage backup and expensive emergency
repairs.

Scheduled inspections, gutter cleaning, and timely responses to
minor signs can all extend the life of your drainage system. In the
long run, preventative maintenance isn’t an added cost — it’s a
financial safeguard.

“All plumbers and drainage companies offer the same
service.”

To many homeowners, plumbing and drainage work may seem fairly
straightforward — a blocked drain is a blocked drain, right? But
assuming that all service providers offer the same level of
expertise, tools, and care can be a costly mistake. There’s a
significant difference between a general handyman and a qualified
drainage specialist, and it’s not just about the price.

Experienced drainage companies invest in proper training,
accreditation, and specialist equipment — such as high-pressure
water jetting systems and CCTV diagnostic tools. Their technicians
are trained to industry standards and understand how to diagnose
and resolve complex issues without guesswork. Reputable firms also
provide transparent pricing, guarantees on their work, and adhere
to strict health and safety practices.

Choosing the cheapest quote may seem appealing, but it often
comes at the expense of quality. Unqualified or underprepared
contractors might only address surface-level symptoms, use
inappropriate tools, or even cause further damage. Worse still,
they may leave you without any warranty or support if the problem
recurs.

In drainage, as in many trades, you get what you pay for. It’s
worth investing in a trusted provider with a proven track record,
proper certification, and the right equipment to ensure the job is
done properly — the first time.

“CCTV drain surveys are only for large buildings or
businesses.”

Many people associate CCTV drain surveys with commercial
properties, large developments, or council infrastructure — but the
truth is, they’re just as valuable for private homes. Whether
you’re a homeowner, landlord, or prospective buyer, a drain survey
can reveal critical issues that are otherwise invisible and help
you make informed, cost-effective decisions.

CCTV drain surveys use specialised cameras to inspect the inside
of your drainage system without any digging. This technology can
uncover a wide range of hidden problems: cracked or collapsed
pipes, root ingress, blockages, misaligned joints, and even signs
of rodent entry. Left undetected, these issues can lead to repeated
flooding, foul odours, subsidence, or expensive emergency
repairs.

One of the most practical times to commission a drain survey is
before purchasing a property. Much like a structural survey, it
offers peace of mind — and can even be used to negotiate price if
defects are found. For landlords, it ensures the drainage system
meets safety standards. For existing homeowners, it provides
clarity when problems arise and prevents guesswork.

CCTV drain inspections aren’t just for big buildings — they’re a
smart investment for anyone who wants to avoid unpleasant surprises
underground.

Conclusion

Drainage issues are often misunderstood — and those
misunderstandings can be expensive. As we’ve explored, many common
myths around blocked drains, home remedies, and responsibility
boundaries can lead to avoidable damage, recurring problems, and
unnecessary repair bills. By educating yourself and recognising the
early warning signs, you can take proactive steps to protect your
property and avoid unpleasant surprises.

Rather than relying on outdated advice or assumptions, it pays
to take a more informed approach to drainage. Routine inspections,
safe disposal habits, and timely maintenance all contribute to a
healthier and more cost-effective system. After all, when it comes
to your drains, it’s far better to know than to guess.

If you’re dealing with blocked
drains in Horsham or anywhere across Sussex, Surrey, Hampshire,
Kent, or South London, DrainBoss Plumbing & Drainage offers a
trusted, no call-out fee service with 24/7 emergency support. As a
family-run, Trading Standards approved company, they combine local
expertise with modern technology to deliver effective solutions for
both domestic and commercial clients — including CCTV surveys,
drain unblocking, and repairs. OAPs and NHS workers also benefit
from a 5% discount.