Maintaining safe and hygienic water isn’t just about avoiding unpleasant tastes or erratic temperatures. It’s about preventing serious health risks.
Contaminants like Legionella or Pseudomonas can thrive unnoticed in poorly managed water systems, endangering the health of your employees, customers or patients.
Additionally, for industries like healthcare and hospitality, these threats aren’t just a health concern but a compliance issue. Falling short of Health and Safety Executive (HSE) regulations can lead to heavy fines, damaged reputations, or worse, putting lives at risk.
Regular water quality testing, particularly total viable count (TVC) testing, is a practical solution used to monitor your water quality, detect microbial activity and address issues before they escalate.
When protecting your water systems and ensuring compliance is a top priority, understanding TVC is an essential step.
What is the Total Viable Count (TVC)?
TVC measures the number of live microorganisms in a water sample, such as bacteria, moulds and fungi. Think of it as a health check for your water.
This count, measured as colony-forming units (CFU) per millimetre (ml) or litre (L), helps to pinpoint potential contamination, providing valuable insight into the cleanliness and safety of your water.
Whether you’re running a manufacturing plant, a hospital or a hotel, knowing the TVC of your water is crucial when protecting those who use it and maintaining compliance.
How is TVC measured?
The TVC measurement process involves three steps:
- Sample collection – A water sample is collected under strict sterile conditions to ensure accurate results.
- Incubation – The sample is placed on nutrient-rich agar plates and incubated at set temperatures (usually 22°C and 37°C) to mimic conditions where bacteria thrive.
- Colony counting – After incubation, the visible colonies are counted, clearly showing the microbial activity within your water.
Why is TVC testing important?
As a business owner or facility manager, especially one who has never experienced an issue with their water system, you might think, “Do I really need to bother with TVC testing?”
The answer is a resounding yes, especially if you want to avoid costly fines. Here are the 4 key reasons TVC testing matters:
Ensuring compliance with regulations
Every industry has water quality standards to meet. Failure to comply with HSE guidelines could lead to fines, a tarnished reputation or worse. TVC testing keeps your water systems aligned with these mandatory standards.
Preventing health risks
Did you know that high TVC levels can signal harmful pathogens like Legionella? By testing regularly, you can detect and carry out essential remedial work to address these risks before they impact the health of your clients, employees or patients.
Assessing system efficiency
You need to understand whether your water treatment systems are working as they should. TVC testing provides a simple way to track their performance and ensure they’re properly keeping your water safe.
Protecting equipment
Biofilm, caused by unchecked microbial growth, can damage pipes and reduce system efficiency over time. You can prevent costly repairs or replacements by revealing this contamination through TVC testing.
What are the industry standards for TVC levels?
Different industries require different TVC thresholds to maintain safety. These include:
Potable water: Generally, a TVC count below 1000 CFU/ml at 22c is safe for drinking.
Healthcare: Facilities like hospitals have stricter standards to protect vulnerable individuals who may be more susceptible to illness, often demanding much lower TVC levels.
When should you conduct TVC testing?
Whether you’re conducting regular maintenance, or installing a new system, here are some key scenarios where TVS testing is advised:
Routine maintenance
No matter what your industry, we always recommend that your water systems are regularly monitored and maintained. Schedule regular checks with a water hygiene specialist to avoid contamination and other issues.
New installations
If your water systems undergo any significant alterations or new systems have been commissioned, they should be tested to see if they are ready to operate (this is especially important if it’s a potable water system).
Incident response
Another time TVC testing should be a serious consideration is if you notice anything unusual with your water, for example, any unusual odours or visual differences. Indicators like these should be investigated by a water hygiene professional immediately.
Expert water quality management with H2O Hygiene
At H2O Hygiene, we understand the serious risks that contaminated water can pose to your business and the people who depend on your systems. That’s why we’re committed to making water quality management straightforward and effective. Our services include:
- Accurate sampling to ensure reliable testing.
- Detailed analysis with clear, actionable insights.
- Proactive solutions tailored to your needs.
Need help with your water systems but unsure where to start?
Our tailored water hygiene consultancy specialists are here to assess your systems, answer your questions and provide customised recommendations. Whether resolving an ongoing issue, or proactively safeguarding your building, we’ll develop a solution that’s perfect for you.
For more information on how we can help protect your building, people and reputation from the risks of contaminated water systems, don’t hesitate to get in touch with our specialists today.
