
Reliable TMV Testing & Certification for NSW Compliance
Thermostatic Mixing Valves (TMVs) play a crucial role in maintaining safe water temperatures in commercial and public buildings. They prevent scalding injuries, help control bacterial growth, and ensure businesses meet NSW plumbing codes and national safety standards. In Sydney, annual TMV testing is legally required for many industries.
If your business or facility has a TMV, it must be inspected and maintained by a licensed plumber to remain compliant. The Blocked Drain Guys provide professional testing, servicing, and compliance reporting, making sure your water system meets all regulatory requirements without disruptions to your operations.
Protecting Sydney Businesses with Safe Water Temperatures
What Does a TMV Do?
A TMV regulates hot and cold water to deliver a steady, safe temperature at outlets like taps and showers. This prevents sudden temperature spikes that could cause burns, especially in hospitals, aged care facilities, childcare centres, and commercial kitchens where vulnerable individuals are at higher risk.
Under Australian Standard AS4032.1 and NSW plumbing laws, TMVs must be tested at least once a year by a qualified professional. Poorly maintained TMVs can fail to control water temperature or create conditions for bacteria like Legionella to grow, posing serious health risks.
Who Needs TMV Testing?
Regular TMV testing is mandatory for any business or facility that supplies temperature-controlled water to staff, patients, customers, or the public. This includes:
- Hospitals, medical centres, and aged care homes
- Schools, preschools, and childcare facilities
- Restaurants, cafés, and commercial kitchens
- Gyms, swimming pools, and sports facilities
- Shopping centres, hotels, and public amenities


