{"id":11698,"date":"2026-10-29T08:47:39","date_gmt":"2026-10-29T08:47:39","guid":{"rendered":"https:\/\/tristel.com\/asia-en\/latest-news\/\/"},"modified":"2026-10-29T08:47:45","modified_gmt":"2026-10-29T08:47:45","slug":"healthcare-drain-disinfection-challenge","status":"publish","type":"post","link":"https:\/\/tristel.com\/asia-en\/latest-news\/healthcare-drain-disinfection-challenge\/","title":{"rendered":"Out of Sight, Out of Mind? Understanding Seven Challenges in Healthcare Drain Disinfection"},"content":{"rendered":"\n
\"\"IPC in Practice<\/span><\/a>

Seven challenges at a glance\"\"<\/span><\/p>

Tap a challenge to jump straight to it.<\/p>

1<\/span>\u00b7<\/span>Hidden reservoir<\/span><\/a>2<\/span>\u00b7<\/span>Splash zones<\/span><\/a>3<\/span>\u00b7<\/span>Biofilms<\/span><\/a>4<\/span>\u00b7<\/span>Resistance<\/span><\/a>5<\/span>\u00b7<\/span>Hard to trace<\/span><\/a>6<\/span>\u00b7<\/span>Current methods<\/span><\/a>7<\/span>\u00b7<\/span>Proving it works<\/span><\/a><\/div><\/div>\n

Drains have long sat at the bottom of the infection prevention and control (IPC) priority list, out of sight and out of mind. But growing evidence is changing that. Experts now recognise sinks, drains and the biofilms inside them as a real source of healthcare-associated infections (HAIs), one that standard cleaning protocols simply aren\u2019t built to handle.<\/p>\n

Here are seven of the biggest challenges facing healthcare drains today.<\/p>\n

<\/span>1<\/span>An overlooked reservoir of dangerous pathogens<\/span><\/h2>\n

Hospital drains often harbour complex communities of microorganisms, known as biofilms, which can include multidrug-resistant organisms (MDROs) that resist common treatments. Studies have found large numbers of harmful bacteria, particularly Pseudomonas<\/em> spp., living within drain systems1<\/sup>. Because a single hospital can have hundreds to thousands of sinks, many hidden from view, staff can often trace outbreaks back to a drain.<\/p>\n

<\/span>2<\/span>Splash zones reach further than you’d think<\/span><\/h2>\n

The risk doesn\u2019t stop at the sink.<\/p>\n

\"\"

Splash zone<\/p>

Up to 2 m<\/p><\/div><\/div>

Running a tap can spray droplets that can carry pathogens up to two metres away2<\/sup>.<\/p>

Within that zone, audits found contamination on:<\/h3>
Intravenous equipment<\/span>around 65%<\/strong><\/div>
<\/div><\/div><\/div>
Respiratory equipment<\/span>27%<\/strong><\/div>
<\/div><\/div><\/div>
Personal care items<\/span>68%<\/strong><\/div>
<\/div><\/div><\/div><\/div><\/div>\n
\"Healthcare<\/figure>\n

That creates a plausible pathway for pathogens to move from a contaminated drain to equipment used directly on patients.<\/p>\n

<\/span>3<\/span>Biofilms are built to survive<\/span><\/h2>\n

A biofilm isn\u2019t just a colony of microorganisms. It\u2019s a community of different species that wraps itself in a protective layer, making it difficult for most disinfectants to get through.<\/p>\n

\"3D

Drains offer the perfect environment for biofilms to thrive: warm<\/span>, wet<\/span>, and full of nutrients<\/span>3<\/sup>.<\/p>

Interestingly, much of what feeds these biofilms isn\u2019t handwashing at all, but the fluids, antimicrobials and waste that go down the sink.<\/p><\/div>\n

<\/span>4<\/span>Hidden layers of resistance<\/span><\/h2>\n

1,000\"\"<\/span> times<\/span><\/p>

Bacteria embedded within a biofilm can be up to 1,000 times harder to kill than the same free-floating bacteria, and the reasons go beyond the usual explanations.<\/p><\/div>\n

Three hidden layers of resistance<\/p>

Select each layer to find out more.<\/p>

Where cells sit<\/span>+<\/span><\/summary>

Some cells behave differently depending on where they sit within the biofilm.<\/p><\/div><\/details>

Dormant cells<\/span>+<\/span><\/summary>

Others become dormant, allowing them to evade treatments aimed at active cells.<\/p><\/div><\/details>

The protective layer<\/span>+<\/span><\/summary>

On top of that, the protective layer itself can block or weaken disinfectants.<\/p><\/div><\/details><\/div>\n

\"Illustration<\/figure>\n

<\/span>5<\/span>Outbreaks that are hard to trace, and can drag on for years<\/span><\/h2>\n

Rooms with sinks see higher rates of HAIs than rooms without them5<\/sup>, a strong indication that drains play a role.<\/p>\n

\"\"

Drain-related outbreaks are notoriously hard to trace back to their source, sometimes taking months, or even years, to resolve.<\/p><\/div>\n

<\/span>6<\/span>Current disinfection methods don\u2019t fully solve the problem<\/span><\/h2>\n

Facilities have a few options for tackling drain contamination, though none is perfect on its own:<\/p>

Thermal<\/span>+<\/span><\/summary>

How it works<\/p>

Hot water or steam, heated to 60\u2013100\u00b0C, can break down the protective layer and kill the bacteria inside, and can reach into complex drain shapes.<\/p><\/div>

Things to consider<\/p>

It may not reach every part of the pipework, and needs careful setup to avoid scalding.<\/p><\/div><\/div><\/details>

Chemical<\/span>+<\/span><\/summary>

How it works<\/p>

Usually a strong oxidising solution, including those that can be applied as a foam so it can travel through the drain properly.<\/p><\/div>

Things to consider<\/p>

How well it works depends on the chemical used, how deeply it penetrates, and how long it stays in contact with the pipe surfaces.<\/p><\/div><\/div><\/details>

Physical removal<\/span>+<\/span><\/summary>

How it works<\/p>

Replacing the pipework or sinks entirely, sometimes switching to waterless care instead, is often treated as a last resort.<\/p><\/div>

Things to consider<\/p>

It\u2019s expensive and disruptive, and there\u2019s no guarantee the biofilm won\u2019t simply grow back.<\/p><\/div><\/div><\/details><\/div>\n

<\/span>7<\/span>There’s no universally accepted way to prove a disinfectant actually works<\/span><\/h2>\n

Right now, there\u2019s no single, standard way to test how well a disinfectant performs against drain biofilms. Evidence tends to come from a mix of sources.<\/p>\n

Good to know<\/p>

Where the evidence comes from<\/h3>