5-Star Tōtika Impac Rating
Date: 11 May 2026
5-Star Tōtika Rating for Plumbing, Gas & Drainage
Updated 2026 – Topline Trade Services has once again achieved a 5-star Tōtika IMPAC rating.
Why Our Rating Sets Us Apart in Plumbing, Gas & Drainage
Topline Trade Services is proud to have once again achieved a 5-star Tōtika IMPAC rating, New Zealand’s highest level of construction health and safety prequalification. This is supported by SiteWise Gold accreditation across our operations.
This recognition reflects the strength of our systems and our ability to safely deliver plumbing, gasfitting, and drainage services across commercial, industrial, and infrastructure projects throughout New Zealand.
More than just a certification, it confirms that our approach to high-risk trade environments is independently verified to meet leading industry standards for safety, compliance, and performance.
What is Tōtika and Why It Matters for Trade Services
Tōtika is New Zealand’s construction industry health and safety prequalification system, developed by CHASNZ to provide a consistent national standard for contractor assessment.
For plumbing, gasfitting, and drainage contractors, Tōtika is particularly important due to the risks associated with live utility networks, excavation work, confined spaces, and infrastructure integration within operational environments.
Delivered through Impac, the system assesses contractor capability across key areas including:
- risk management systems
- incident prevention processes
- training and competency frameworks
- documented health and safety procedures
It ensures contractors working on commercial and infrastructure projects can demonstrate consistent, evidence-based safety performance before stepping onto complex sites.
This standardised approach also reduces duplication for clients by ensuring all contractors are assessed against a single, recognised national benchmark.
Independent Health & Safety Verification
In addition to Tōtika, Topline Trade Services holds a SiteWise Gold accreditation, providing independent verification of our health and safety performance across all worksites.
While Tōtika is the primary prequalification system for construction and infrastructure projects, SiteWise provides an additional layer of assurance across broader operational activities and site environments.
Learn more about our SiteWise Gold accreditation and what it means for our safety standards.
Safety in Plumbing, Gas & Drainage Projects
Our work often involves complex, high-risk environments where safety systems are critical to successful delivery, including:
- Gasfitting systems under pressure requiring strict compliance and testing protocols
- Drainage and wastewater infrastructure, often involving excavation and confined space entry
- Live water and utility networks where isolation and coordination are essential
- Occupied commercial buildings requiring staged works and operational continuity
Our 5-star Tōtika rating ensures these risks are actively managed through structured systems, documented procedures, and trained personnel.
For our clients, this means:
- independently verified safety systems
- reduced project risk and disruption
- streamlined tender and procurement processes
- confidence in compliant delivery from start to finish
Where Plumbing, Gas & Drainage Meets Construction-Grade Safety
We work on complex sites that demand more than technical capability alone. Whether delivering large-scale drainage infrastructure, commercial gas systems, or plumbing across multi-stage developments, our systems ensure safe and efficient delivery at every stage.
This capability is particularly valuable for:
- construction companies seeking prequalified subcontractors
- commercial developers requiring compliant trade partners
- project managers overseeing multi-trade infrastructure delivery
Ready to Work with a Prequalified Partner?
Topline Trade Services is more than a plumbing, gas and drainage contractor – we are a fully verified, 5-star Tōtika rated and SiteWise Gold accredited partner delivering safe, compliant, and reliable services across New Zealand’s most demanding sites.
If you're looking for a contractor who prioritises health and safety, compliance, and performance, get in touch.
Contact us today to discuss your next commercial or industrial project, or to learn more about our Tōtika 5-star capabilities. Enquire online or phone 0800 111 818
Commercial & Industrial Roofing Services
Our sister company, Topline Roofing, also holds a Tōtika 5 star rating and SiteWise Gold accreditation, installing commercial and industrial roofing projects.
Visit Topline Roofing >
FAQs
What types of plumbing & gas work require Tōtika prequalification?
Tōtika is commonly required for commercial plumbing, gas installation, drainage infrastructure, and any work involving construction sites or public infrastructure projects.
Why is Tōtika important for gasfitting & drainage contractors?
Gasfitting and drainage work often involves high-risk environments such as pressurised systems, excavation, and confined spaces. Tōtika ensures contractors have verified systems to manage these risks safely.
Is Tōtika required for gasfitters & plumbers in NZ?
Many commercial builders, councils, and infrastructure clients require Tōtika or equivalent prequalification before awarding plumbing or gasfitting contracts.
How does Tōtika help with tendering for projects?
A 5-star rating streamlines procurement by reducing the need for repeated health and safety audits, making it easier to qualify for larger commercial and government projects.
Is Tōtika relevant for residential plumbing work?
Generally no. Tōtika is primarily used for commercial, industrial, and infrastructure projects requiring formal prequalification.
What makes a 5-star Tōtika rating different from standard compliance?
A 5-star rating specifically for the construction industry, indicates that a contractor’s health and safety systems have been independently assessed as best practice, not just minimum compliance.
Does Tōtika cover environmental and site safety as well?
Yes. It includes risk management systems covering environmental protection, incident prevention, and site-specific safety planning.
