With rising consumption and health awareness, smart sanitary toilet seats have evolved from a niche bathroom accessory to a standard feature of quality family living. Industry data indicate that the adoption rate of smart toilets in my country has increased from less than 1% in 2006 to 40% by 2025, with annual sales more than tenfold higher than in 2010, and the market continues to expand. Against this backdrop, the new national standard GB 25502-2024, "Limited Values and Grades for Water Efficiency of Toilets," which officially came into effect on May 1, 2025, has established a new quality "watershed" for the industry, with water-saving certification becoming a core indicator for both corporate competition and consumer selection.
Water-saving Technology Breakthroughs Under the New National Standard: From "Compliance" to "Efficiency"
Compared to the previous 2017 standard, GB 25502-2024 rigorously optimizes key indicators for smart sanitary toilet seats, such as flushing water flow and water hammer pressure. The revised "Toilet Water-Saving Certification Rules" issued by the China Quality Certification Center (CQC) explicitly require that the flushing water flow rate of certified products be controlled within the range of 350ml/min to 1.1L/min, a further tightening of the ≤1.2L/min stipulated in the previous GB/T 23131 standard. Furthermore, referencing the Japanese JIS A4422-2011 standard, the water hammer pressure is limited to ≤0.2MPa, significantly lower than the 1.5MPa requirement of the previous JG/T 285 standard, significantly improving product safety and water conservation efficiency.
To meet the new standards, leading companies have upgraded their core technologies. For example, products featuring a "pulse-type water-saving flushing system" use a segmented water discharge design to reduce water consumption per flush to less than 0.8L. Models equipped with an "intelligent water pressure regulation chip" automatically adjust the optimal water flow intensity based on the usage scenario, ensuring effective cleaning while minimizing water waste. These technological innovations not only help companies obtain CQC water-saving certification but also become a key competitive advantage in product differentiation. How does water-saving certification influence consumer decisions?
For consumers, smart toilet seats bearing the CQC water-saving certification mark represent a better value for money. For a family of three, for example, products that meet the new standard can save approximately 1,200 liters of water annually, equivalent to 10 months of drinking water for a household. Furthermore, certified products undergo multiple tests for electrical safety and functional stability, including compliance with GB 4706.53-2008, "Particular Requirements for Safety Toilets for Household and Similar Electrical Appliances," effectively reducing safety hazards such as leakage and overheating.
Purchasing Tip:
Starting in 2025, the old water-saving certification will gradually expire. Consumers should ensure that products are marked with both the "GB 25502-2024" and "CQC Water-Saving Certified" logos to avoid purchasing obsolete products.
Industry Trend: A wave of quality upgrades driven by policy
With the implementation of the new national standard, the industry is expected to undergo a significant reshuffle. The China Quality Certification Center requires that all outdated certificates be converted by May 1, 2026. Products that fail to meet the standards by this deadline will face certificate suspension or revocation. Furthermore, the combined effects of water-saving certification and smart home policies (such as some cities including smart bathrooms in green building material subsidies) will further stimulate demand in lower-tier markets. The penetration rate of smart toilet lids is expected to exceed 60% between 2025 and 2030.
