What is WELS Rating by PUB? Save Water and Money?

In Singapore, where water is a precious resource, making smart water-saving decisions isn’t just an environmental responsibility. It can also save you money.

One key initiative driving water conservation in homes and businesses is the Water Efficiency Labelling Scheme (WELS) by the Public Utilities Board (PUB). When shopping for a new faucet, showerhead, or toilet, understanding the WELS rating is crucial.

This article provides comprehensive information on the WELS rating in Singapore, including its definition, operation, how to verify a product’s rating, and its significance.

What is the WELS Rating System?

It is a water efficiency labelling scheme launched by PUB Singapore, the national water agency responsible for managing Singapore’s water resources. It rates various water-related products based on their ability to conserve water.

Ratings range from 0-ticks (least efficient) to 4-ticks (most water-efficient). Note that 4 ticks only applies to dishwashers and washing machines.

Under WELS, it is mandatory for certain types of products sold in Singapore to be labelled with their efficiency rating. These include:

• Basin taps and mixers
• Showers
• Dual-flush water closets (WCs)
• Urinals and urinal flush valves
• Clothes washing machines (domestic use)
• Dishwashers (domestic use)

Why the WELS Rating Matters

Using water-efficient products benefits both the environment and your wallet. Here’s how:

• Water savings: A 3-tick product can save more than 50% of water compared to a 0-tick model.
• Lower utility bills: Reduced water usage directly lowers your monthly PUB bill.
• Supports sustainability: Contributes to Singapore’s water conservation goals under the Singapore Green Plan 2030, particularly important as climate change affects our water supply.
• Mandatory compliance: Certain products without WELS labels cannot be sold in Singapore.

How PUB Tests and Assigns WELS Ratings

All WELS-labelled products must undergo laboratory testing under controlled conditions. The performance is measured by:

• Flow rate (litres per minute) for taps and showers
• Flush volume (litres per flush) for toilets and flushing cisterns
• Water consumption per cycle for washing machines and dishwashers

Based on test results, PUB assigns a tick rating that determines the water efficiency level:

• 0-Tick: Does not meet efficiency standards
• 1-Tick: Basic efficiency
• 2-Tick: Moderate efficiency
• 3-Tick: High water efficiency

PUB maintains a publicly accessible WELS database for users to verify registered models. If you need assistance with verification, suppliers can provide details or you can make a phone call to the relevant authorities.

WELS Label Explained

Every WELS-rated product comes with water efficiency labels showing key information:

• Tick rating (0 to 4 ticks) (Note: 4 Ticks apply to dishwashers and washing machines)
• Product type (e.g., tap, shower, WC)
• Brand and model
• Registration number
• Water consumption performance (e.g., litres per minute)

This label enables consumers to make informed comparisons before making a purchase. Each label features a distinctive water droplet design that makes it easy to identify.

WELS Ratings by Product Category

Here’s how it applies across common water fittings:

Showers

• 3-tick: ≤ 5 litres/min
• 2-tick: 5.1 – 7 litres/min
• 1-tick: 7.1 – 9 litres/min

Basin Taps & Mixers

• 3-tick: ≤ 4 litres/min
• 2-tick: 4.1 – 6 litres/min
• 1-tick: 6.1 – 8 litres/min

Dual Flush WCs

• 3-tick: ≤ 3.5 litres/flush (avg)
• 2-tick: 3.6 – 4.5 litres/flush
• 1-tick: 4.6 – 6 litres/flush

How to Check if a Product is WELS-Approved

You can verify a product’s WELS certification through the PUB WELS database:

• Visit https://www.pub.gov.sg
• Navigate to “WELS Registered Products”
• Search by brand, product type, or model number

Retailers in Singapore are required to display WELS labels on covered products. If you encounter something suspicious regarding counterfeit labels, you can report it to the scamshield helpline for verification.

Water Efficiency Labelling Scheme for HDB, Condos, and Commercial Projects

WELS ratings are increasingly required for:

• HDB flat upgrades and kitchen/bathroom retrofits
• Condo developments seeking BCA’s Green Mark certification
• Commercial buildings (malls, hotels, offices) aiming for water efficiency targets

Government officials in the building industry strongly encourage architects, developers, and facility managers to specify 3-tick products for optimal savings and compliance across various industries.

Singapore’s Water Strategy and WELS

Singapore’s water independence relies on the four national taps: local catchment water, imported water, NEWater, and desalinated water. The WELS program plays a crucial role in reducing water wastage and supporting our water reclamation efforts.

By choosing efficient fixtures for household use, residents contribute to the broader goal of water security and help prevent water contamination from excessive treatment demands.

Common Myths About Water Efficiency Labelling Scheme Ratings

Myth 1: Higher WELS rating = weak water pressure

• Fact: 3-tick taps and showers are engineered for efficient flow without compromising performance.

Myth 2: WELS products are too expensive

• Fact: Many 3-tick options are affordably priced and offer long-term savings that won’t break the bank.

Myth 3: WELS only matters for new homes

• Fact: Any home or business can benefit from upgrading to water-efficient fixtures.

Tips for Choosing the Right WELS Product

• Look for 3-tick products that match your pressure system
• Check user reviews for durability and ease of installation
• Choose brands with PUB registration and long-term parts support
• Consult your plumber to ensure compatibility with existing piping
• Consider the impact on your loved ones and future generations

Benefits of Using High WELS-Rated Products

• Save on water bills
• Lower carbon footprint
• Extend lifespan of appliances and plumbing
• Help Singapore achieve water sustainability goals
• Access to the best services from the plumbing industry

Professional Services and Support

From the initial consultation to the final installation, professional plumbers can guide you through selecting appropriate WELS-rated products. Many offer comprehensive services that include assessment of the existing system, product recommendations, and post-installation support.

Conclusion

The WELS rating is more than just a label—it’s a powerful guide that helps you conserve water, save money, and make eco-conscious choices. Whether you’re renovating your HDB flat, upgrading a condo, or fitting out a commercial space, always check the WELS label before you buy.

With the ongoing challenges of water scarcity and the need for sustainable living, choosing high-efficiency products is an investment in the future.

Want help choosing the right WELS-approved tap or shower? Contact our experienced plumbers at DirectPlumber.sg for professional advice and installation.