Comparing Grade 1 and Grade 2 Water Efficiency Standards for Toilets

Toilets are one of the essential fixtures in our daily lives, and with the growing concern for water conservation and environmental protection, understanding the differences between first-level and second-level water efficiency toilets is increasingly important.

Differences between First-level and Second-level Water Efficiency Toilets

1、Definition of Water Efficiency Levels

Water efficiency levels can be understood as an indicator that measures the water resource utilization efficiency of toilets, typically marked as L/flush. A first-level water efficiency toilet uses no more than 4.8 liters per flush, while a second-level water efficiency toilet uses no more than 3 liters per flush.

2、Flushing Methods

First-level water efficiency toilets employ a complete flushing method, meaning that they use a relatively larger volume of water for each flush. This approach is primarily aimed at ensuring flushing effectiveness and cleanliness. In contrast, second-level water efficiency toilets adopt a mixed flushing method with two modes. The first mode uses a smaller amount of water for flushing urine, while the second mode employs a larger volume of water for flushing solid waste. This mixed flushing method ensures effective cleaning while significantly reducing water waste.

3、Water Conservation Effects

Due to the relatively larger water usage per flush in first-level water efficiency toilets, the effectiveness in terms of water conservation is limited. Although there have been improvements in water-saving compared to traditional toilets, they still fail to meet current environmental conservation demands. On the other hand, second-level water efficiency toilets demonstrate notable water-saving effectiveness by using different flushing modes for urine and solid waste, allowing for precise water volume control and achieving genuine water savings. In comparison to first-level toilets, second-level toilets can achieve water savings of over 50%.

4、Reflection of Environmental Awareness

While first-level water efficiency toilets show some improvements in water conservation, they still do not meet the requirements for true environmental protection. The larger volume of water used per flush leads to considerable water resource wastage. Meanwhile, second-level water efficiency toilets utilize advanced mixed flushing technology, reflecting a greater emphasis on environmental awareness. By precisely controlling the flushing modes, they significantly reduce water waste and achieve better water-saving results.

Conclusion:

This summarizes the differences between first-level and second-level water efficiency toilets. The differences exist in flushing methods, water-saving effectiveness, environmental awareness, and market prevalence. Although first-level water efficiency toilets currently remain the mainstream products in the market, second-level toilets are more prominent in terms of water conservation and environmental protection. With advancements in technology and increased environmental awareness, it is believed that second-level water efficiency toilets will gain more favor in the market and become a preferred choice in home renovations in the future.