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Recognize New Zealand's updated plumbing regulations

What are the most notable revisions to plumbing regulations?


Reduced hot water temperature

The maximum hot water temperature for taps in most buildings plumbing projects has been reduced from 55°C to 50°C.                                       

High quality pipe fittings meet New Zealand;s updated plumbing regulations

Reduced lead content in plumbing products                                                     

The new standards require a significant reduction in lead content in plumbing products to protect public health.

These standards will be fully implemented in September 2025, marking an important step in protecting water quality.


Mandatory certification requirements for regulations

WaterMark certification

WaterMark certification  is a mandatory certification for sanitary and plumbing products in New Zealand .The certification is regulated by the Joint Accreditation 

System of Australia and New Zealand (JAS-ANZ) and is closely related to the AS/NZS 3500 plumbing standard system.

Types of products that require WaterMark certification

Taps, mixers and valves

Sinks, bathtubs and showers

Toilets, tanks and drainage systems

Water supply pipes and accessories

●Filters, water softeners and other water treatment devices

Main requirements for WaterMark certification

Products that meet AS/NZS standards must meet relevant Australian and New Zealand standards, such as AS/NZS 6400(water-saving performance)

 and AS/NZS 4020 (safety of drinking water contact materials).

Factory audits Production facilities must comply with quality control system requirements, such as ISO 9001.

Regular reviewThe certification body will regularly check product quality to ensure that it continues to meet standards.

How to apply for WaterMark certification?

✅ Determine the applicable standards for the plumbing projects 

✅ Contact the certification body 

✅ Submit product information 

✅Conduct testing and audits

✅Obtain certification and number


In summary

When sourcing high-quality plumbing accessories in New Zealand, choosing a professional and reliable supplier is important. JIANZHI, a renowned Chinese plumbing fittings manufacturer,

offers premium, adaptable solutions for both business and residential applications. High-quality products and a good reputation lay the foundation for an enterprise to grow and prosper. 

Jianzhi is dedicated to providing premium pipe connectors for customers all over the world.


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