WaterMark Certificate of Conformity
WaterMark licence WM-022837 confirms Green Drain meets WMTS-522:2021 requirements for barrier-type trap seal protection devices. Certified by IAPMO R&T Oceana, accredited by JAS-ANZ and the Australian Building Codes Board. Models GD2, GD3, and GD4 are approved for installation across Australia.
WaterMark is not optional. It is Australia's mandatory certification scheme for plumbing and drainage products, administered under the Plumbing Code of Australia (PCA). Any product installed in a plumbing system in any Australian state or territory must carry WaterMark certification. Products without it cannot legally be sold or installed for plumbing use.
The scheme goes well beyond a one-time test. WaterMark certification requires product testing to the applicable standard, factory surveillance audits of the manufacturing facility, quality assurance assessment of the manufacturer's QA systems, and ongoing compliance monitoring throughout the certification period. It is a continuous obligation, not a point-in-time approval.
Green Drain is certified under WMTS-522:2021, the WaterMark Technical Specification titled "Fixture and floor wastes -- Supplementary protection devices." This standard was specifically written for barrier-type floor drain trap seal protection devices, making it the definitive Australian standard for Green Drain's product category. The certifying body is IAPMO R&T Oceana, based in Narre Warren, Victoria, with accreditation from both JAS-ANZ and the ABCB (Australian Building Codes Board).
An important regulatory distinction applies to the Australian market: under the Plumbing Code of Australia, Green Drain is classified as a supplementary trap seal protection device. It provides additional protection against sewer gas, pest entry, and evaporation, but it does not replace the primary water trap. The water seal remains the primary barrier, with Green Drain providing backup protection when that seal is compromised through evaporation or other causes.
Certification testing was performed by IAPMO R&T Oceana at their facility in Narre Warren, Victoria, Australia. The testing evaluated Green Drain against WMTS-522:2021 requirements for barrier-type supplementary protection devices.
Each certified model (GD2, GD3, GD4) was tested against the performance requirements defined in WMTS-522:2021. This covers the product's ability to restrict sewer gases, insects, odours, and evaporation from a trap seal. The standard specifically addresses barrier-type devices, meaning the testing criteria were purpose-built for this product category.
WaterMark certification requires periodic audits of the manufacturing facility in Cornelius, North Carolina. These audits verify that production processes and quality systems remain consistent with the product that was originally tested and certified. Factory surveillance is ongoing for the duration of the certification.
Beyond product testing, IAPMO R&T Oceana reviewed Green Drain's quality assurance systems to confirm the manufacturer can consistently produce products that meet the certified specifications. This is a systems-level evaluation, not just a product-level test.
Each model was mapped to Australian DN pipe sizes per AS/NZS 1260: GD2 to DN50, GD3 to DN80, and GD4 to DN100. This ensures the certified products fit standard Australian drainage pipe dimensions used in commercial and residential construction.
This certification is relevant to healthcare and aged care facilities, commercial kitchens and food processing, hotels and resorts, and education and government buildings across Australia where WaterMark-certified drainage products are mandatory. Hospitals, clinics, and aged care facilities rely on Green Drain for supplementary protection against sewer gas and pest entry in patient areas and service corridors. Commercial kitchens and food processing facilities benefit from the barrier design that prevents pest entry through floor drains. Hotels and seasonal resorts use Green Drain to maintain protection against sewer gas odours even when the primary water trap has evaporated in unused rooms. Schools, universities, and government buildings find the product particularly valuable for drains that go unused during holiday periods or in low-traffic areas.
WaterMark WM-022837 covers the three most common commercial drain sizes in Australia. Each model is mapped to AS/NZS 1260 certified pipe dimensions.
WaterMark is not a "nice to have" credential. It is a legal requirement enforced at the state and territory level across all of Australia. Specifying or installing a non-WaterMark plumbing product is a compliance violation.
WM-022837 gives Green Drain legal standing for use in plumbing systems across all Australian states and territories, eliminating compliance risk for plumbing contractors and specifiers. The certification is also recognized under the New Zealand Building Code because NZ references AS/NZS standards, and the certified models are mapped to AS/NZS 1260 pipe sizes that are standard across both countries. Australian WaterMark certification carries weight throughout the broader Pacific region as well.
Architects, hydraulic engineers, and plumbing consultants can specify Green Drain by referencing WM-022837 and WMTS-522:2021 in project documentation. The WaterMark licence number provides a verifiable, auditable reference that satisfies building certifiers and regulatory inspectors.
The official IAPMO R&T Oceana Certificate of Conformity, plus the APAC region installation guide with compliance requirements under WMTS-522:2021.
WaterMark is Australia's mandatory certification scheme for plumbing and drainage products, administered under the Plumbing Code of Australia (PCA). It is legally required. Products without WaterMark certification cannot be sold or installed for plumbing use in any Australian jurisdiction. The scheme involves product testing, factory surveillance, quality assurance assessment, and ongoing compliance monitoring.
WaterMark certificate WM-022837 currently covers three models: GD2 (DN50, 2"), GD3 (DN80, 3"), and GD4 (DN100, 4"). These are the three most common commercial drain sizes in the Australian market. The smaller models (GD1.25, GD1.5) and larger models (GD3.5, GD5, GD6) are not covered by this certification. If your project requires a size outside DN50-DN100, contact Green Drain for guidance on available options.
No. Under the Australian Plumbing Code, Green Drain is classified as a supplementary trap seal protection device, not a replacement for the primary water trap. The water seal remains the primary barrier against sewer gas. Green Drain provides additional protection when that seal is compromised through evaporation, particularly in drains that do not receive regular water flow. This is a critical regulatory distinction. The APAC installation guide specifies that Green Drain "is not an alternative to a water seal trap."
WMTS-522:2021 is the WaterMark Technical Specification titled "Fixture and floor wastes -- Supplementary protection devices." It defines the testing and performance requirements for barrier-type floor drain trap seal protection devices in Australia. This is the definitive Australian standard for Green Drain's product category. The standard was updated from WMTS-522:2018 to reflect current requirements. Green Drain's certification has been maintained through both versions of the standard.
WaterMark is an Australian certification, but it is recognized under the New Zealand Building Code because NZ references AS/NZS standards. The certified Green Drain models (GD2, GD3, GD4) are mapped to AS/NZS 1260 certified pipe sizes (DN50, DN80, DN100), which are standard across both countries. Australian WaterMark certification is also commonly referenced throughout the broader Pacific region where Australian standards are adopted or recognized.
Download the WaterMark certificate and APAC installation guide above, or contact us for specification language, submittal documents, or project-specific technical support.