For washing face, cooking, and boiling water, citizens cannot do without tap water every day, as well as the tap. Earlier, there were reports that there were more lead-excess problems in faucets, which may cause harm to the human body. In May of this year, the new version of the national standard for faucets was officially released and will be formally implemented from next month. The new national standard specifies the limit for lead precipitation.

Yesterday, the Quality Supervision Bureau of Jiangsu Province conducted spot checks and risk monitoring on taps in the Jiangsu market and production areas in accordance with the current national standards and the new national standards. As a result, 20% of the lead precipitation of copper alloy taps exceeded the limit of the new national standard.

Excessive lead and chromium

Beginning in December, the production of products exceeding the standard will be punished

I fortiden, there was no mandatory limit on the amount of pollutants precipitated in faucets. The new national standard will draw on the detection methods and limit standards of the United States. Ding Hongliu, director of the physical and chemical office of Suzhou City Product Quality Supervision and Inspection Institute, said that the risk monitoring mainly focused on the copper alloy faucets and stainless steel faucets used by residents daily, and focused on the problem of lead and chromium precipitation in faucets that consumers are most concerned about. monitor.

The new national standard stipulates that the amount of lead precipitation in faucets is not more than 5μg/l, but among 53 faucets claiming copper alloys, 11 batches of lead exceed the standard, exceeding 20% of the total. “The main reason is that most of the production companies choose to process copper, cast copper alloys, and even use recycled brass such as key copper, car water tank copper, etc.” Ding Hongliu reminded that the amount of lead precipitation refers to the 16 hours of contact between water and the inner wall of the faucet The amount of precipitation, so the water left in the faucet for a long time is discharged during use, which can effectively reduce the safety risk.

The new national standard also stipulates that the amount of chromium precipitation is not more than 10.0μg/l, but in the test, there are still two batches of faucets that exceed the standard. There are two reasons for excessive chromium precipitation. One is the residual precipitation of chromium in the welding seam and the surface coating, and the other is that the faucet itself contains chromium, which is precipitated during immersion.

Imidlertid, the current quality supervision department has detected problems with these products, but it cannot impose penalties on the company. Ding Hongliu introduced that starting next month, as long as the faucet whose production date is after December 1st is detected to exceed the standard, it can be punished. Gu Yonghua, deputy director of the Jiangsu Provincial Quality Supervision and Supervision Department, said that the quality supervision department is giving risk warnings to these companies that have detected problems and asking them to hurry up and make rectifications.