- HEP Plumbing
- Compliance Standards

Compliance Standards
Compliance Standards | Commercial Plumbing | Plumbing | Mascot
From the bustling industrial parks to the high-rise office towers of Mascot, HEP delivers precision-engineered solutions that keep water, waste and fire systems operating safely and smoothly. Our licensed technicians navigate the maze of Australian Standards, local council regulations and Green Star requirements so you don’t have to, documenting every inspection, backflow test and pressure-temperature check in clear, audit-ready reports. Whether we’re fitting RPZ valves in an aircraft maintenance hangar or upgrading the thermostatic mixing valves in a boutique hotel, our commitment to uncompromising quality protects your assets, your workforce and your reputation.
When deadlines are tight and the stakes are high, you need more than a wrench and a promise—you need a partner whose entire DNA is compliance. That’s why Mascot’s leading builders, facility managers and strata committees trust HEP for commercial plumbing that passes every inspection the first time and keeps performing long after the ribbon-cutting.
FAQs
What plumbing compliance standards apply to commercial buildings in Mascot?
Commercial plumbing work in Mascot must comply with the National Construction Code (NCC)—Volume 3 (Plumbing Code of Australia), the relevant sections of AS/NZS 3500, Sydney Water requirements, and local by-laws enforced by Bayside Council. All fixtures and materials must carry WaterMark or WELS certification, and installations must follow Safe Work NSW regulations for workplace health and safety.
How often should backflow prevention devices be tested to remain compliant?
Under Sydney Water’s backflow prevention program and AS/NZS 2845.3, testable backflow devices in commercial premises must be inspected and certified annually by a licensed plumber with a Backflow Prevention accreditation. Copies of the test report must be lodged with Sydney Water and kept on site for audit purposes.
Do I need a compliance certificate after commercial plumbing work?
Yes. In NSW, a Certificate of Compliance (CoC) must be issued by the licensed plumber within five days of completing any plumbing work valued over $20,000 or involving sanitary drainage, water supply, or fire service installations. The certificate confirms the job meets the PCA, AS/NZS 3500, and local authority requirements, providing protection for owners, tenants, and insurers.
What licences and insurances should a commercial plumber hold in NSW?
A commercial plumber must hold a current NSW Contractor Licence or Qualified Supervisor Certificate endorsed for plumbing, draining, and gasfitting. They should also carry public liability insurance (minimum $20 million), workers compensation (if they employ staff), and be able to provide evidence of ongoing professional development and any specialist accreditations such as Thermostatic Mixing Valve (TMV) or Backflow Prevention endorsements.
How can my business ensure its commercial bathrooms meet accessibility and water-efficiency criteria?
To stay compliant, bathrooms must be designed in accordance with AS 1428.1 for accessibility, including correct fixture heights, grab-rail placements, and door clearances. For water efficiency, choose WELS 4–6 star rated taps, flush valves, and urinals, install flow restrictors, and consider sensor-operated fixtures. All products must carry WaterMark certification, and a licensed plumber should commission the system and supply a CoC.
What are the penalties for non-compliant commercial plumbing installations in Mascot?
Penalties can include on-the-spot fines from NSW Fair Trading (up to $1,100 for individuals and $5,500 for companies per offence), rectification notices, or plumbing system shutdowns by Sydney Water. Serious breaches can lead to prosecution, with court-imposed fines exceeding $110,000 and potential suspension of trade licences. Non-compliance may also void insurance and expose building owners to liability claims.