Turbidity: less than 0.2

Tap water group Lin Aiwu introduction, director of the center for water quality monitoring turbidity of national standard for a NTU, the factory water and tap water group control in 0.3 NTU, once turbidity reach 0.3 NTU, waterworks will automatically alarm, water effluent turbidity is generally in 0.1 0.2 NTU, effluent turbidity far below the national standard.

Nitrate: surface water is less than 0.7

For Lin Aiwu nitrate, the national standard of surface water is less than 10 mg/l, but, if you use the underground water, can be up to 20 mg/l. Beijing 60% all is the use of surface water, only 40% use underground water. According to the fourth quarter of last year's test, Beijing groundwater nitrate highest only 9.7 mg/l, even national standard up to 20 mg/l, Beijing is still under control in line with the 10 mg/l. And the surface water source of urban minimum ＆#118alue is 0.7, far below the national standard.

Hardness: less than 380

So-called hardness, is the content of the calcium carbonate in the water, bring to a boil form thermonatrite. Tap water hardness of national standard does not exceed 450 mg/l, and Beijing tap water group production of tap water control below 380 mg/l. Liang Li is introduced, in order to reduce the hardness, tap water group take the use of groundwater and surface water blending, to reduce hardness. Where there are national standards within the scope of the hardness, beneficial and harmless to the health of citizens.

Disinfection by-products: only 0.011

Since 2007 since the implementation of the new national standard of drinking water for more strict disinfection by-products, tap water group for many years to take advanced treatment process, make the disinfection by-products under control. One of chloroform, for example, in 1997 the ninth waterworks the mean ＆#118alue of 0.019 mg/l, gb is 0.060 mg/l. In 2012, the average of 0.011 mg/l, through digital can show that over the years while under the condition of the complication of diversification of water sources, water quality, through the treatment process, the index has been very good control. J029

Tap water three q

1 tap water in Beijing is how to monitor?

The world advanced detection technology

Tap water group has established the early warning system for water and fine water quality management mode, from a focus on the internal control of three-level quality guarantee system, to the whole process from the source to the tap water quality monitoring and control system. Group five years ahead of time, first in the country issued 106 drinking water sanitation is to meet the new standards, testing capacity of 205 items, all effluent indexes reach or exceed national standards, testing technology reach the world advanced level. Intake pretreatment technology, the factory water control method, activated carbon adsorption technology, high density organic clarifying process, sand precipitation process, membrane technology such as deep water treatment technology in the domestic leading position, in history has never been the diversification of water sources, water quality of complicated situations to ensure the safety of water supply in the capital.

The whole process of water quality monitoring

Municipal tap water group spokesman said, the water source of drinking water in Beijing and is the best of the domestic water, tap water group of Beijing water supply are accord with national standard 106, is a safe water, citizens to go, please. In order to solve the problem of drinking water security of Beijing, make full use of the capital resources of science and technology, promote enterprise independent innovation ability of water supply, water quality in water treatment technology, network optimization, evaluation system and emergency technical aspects such as establishing Beijing drinking water security system.

Tap water group set up the whole process of water quality monitoring system, the source water, off-work water and pipe water, user terminals to the whole process of water quality monitoring, to ensure water quality reach the national standard. Such as method of on-line monitor, regular sampling test, etc, to monitor water quality; By waterworks operation team, water plant laboratory, water quality monitoring center of triple water quality testing, to ensure that the factory water 106 national drinking water health standards; In water supply network and user terminals set up 243 water quality monitoring stations, the water pipe network, users tap water for the whole process of quality control, ensure the safety of water supply in the capital.

Tap water group, actively adopt advanced water treatment technology at home and abroad, such as ozone and activated carbon advanced treatment, ultrafiltration membrane, micro sand accelerate precipitation, high density clarification, such as water treatment technology, the factory water indexes reach or exceed national standards, all of which intake pretreatment technology, the factory water control method, activated carbon adsorption technology, high density organic clarifying process, sand precipitation process water treatment optimization integration technology, membrane technology, such as the depth of the water treatment technology in the domestic leading position.

Strengthen the raw water pretreatment

Is a water inlet is installed in miyun water warning system, real-time monitoring of raw water turbidity, algae, toxicity, water quality indexes such as organic matter concentration changes, and through the remote wireless data transmission system to real time water quality information to the waterworks in a central control room, implements the monitoring, early warning in advance, buy time for the adjustment of the waterworks follow-up process. Second, in miyun reservoir water inlet raw water intake for the using potassium permanganate preoxidation and adding the powder activated carbon process, solve the miyun reservoir autumn algae in water quality problem. Three is in the draw water into the water before setting the three pass, took the four kinds of pretreatment process. In TuanCheng the water-transmission line the entrance of the lake, set the dosing powder activated carbon adsorption and sodium hypochlorite disinfection pretreatment process; In kansai zhuang pumping station set up potassium permanganate preoxidation process; In raw water into the water before setting the ozone oxidation process. When water quality abnormal changes, through three mark of inflow preprocessing, ensure the south-to-north water transfer thereof river basin water before entering the water treatment process, conforms to the national class II water quality standard of drinking water source of life.

Municipal pipe network water residents can rest assured to drink. Tap water group attaches great importance to the safety of drinking water, water from water source to the user terminal to implement the whole process of water quality monitoring, the water supply network and user terminals set up 243 water quality monitoring, to ensure the water meet the national drinking water health standards, the public can rest assured to drink.

2 how to get public tap water quality information?

Since January 15 this year, the Beijing municipal tap water group for the first time through the portal to the public water supply water quality information. Release cycle for every quarter, time for 15 days before the first month of each quarter, released on the water quality monitoring in the first quarter results.

A year before January 15, will also release all 106 year factory water indicators of the test results.

Released the scope includes: tap water group within the scope of the urban water supply and the suburbs (county) nine tap water pipe network water quality and effluent water quality information.

Nine JiaoOuXian company including nankou, vallely, huairou, miyun, yanqing, well, daxing, tongzhou, long store.

Pipe network water quality release content of turbidity, chromaticity, odor and taste, disinfectant allowance, the total number of colonies, total coliforms, a maximum of seven indexes oxygen consumption, minimum.

Factory quality content for the publication of "drinking water health standard" in 42 measures of routine quarterly results of maximum and minimum ＆#118alue.

3 where is drinking water from water source in Beijing?

We have learned, at present, only from four reservoirs water diversion of hebei province and Beijing respectively yellow walls, gangnan, king zhuang quickly, AnGeZhuang reservoir, the reservoir water completely accord with national source water and drinking water standards.

According to introducing, because these four different reservoir water quality of hebei province and Beijing municipal tap water group will also according to water quality, process adjustment.

Our correspondent Long Lou J029

Ask zhao flying

This morning, protect healthy drinking water health association professional committee of Beijing director zhao flying (Felicityzhao) at sina weibo, is "Beijing tap water to be a health risk?" For micro interviews. Zhao had claimed that the flying couples 20 years not to drink tap water.

The dark night shining: what's most suitable for long-term drinking water?

Felicityzhao: moderate salinity of natural mineral water, suitable for long-term drinking.

The love of god, 2011: tap water in Beijing named a few level?

Tap water nationwide Felicityzhao: Beijing or safer, specified in the standards for tap water one to two liters per day does not have a problem.

Passers-by old xu: water quality hard, isn't it easier to gallstones?

Felicityzhao: enough drinking water prone to kidney stones, a lack of calcium and magnesium ions in water are also prone to kidney stones, but has nothing to do with the water of gallstones.

Sdq900703: daily water insecurity?

Felicityzhao: existing disinfection by-products in tap water and may have certain influence to the health of people.

Not exquisite pearl: the water purifier on market works?

Felicityzhao: tap water filtered to improve safety, but to pay attention to the secondary pollution of water purifiers, water purifiers to timely replacement and cleaning.

Children like curtilage bean mom: to drink plain boiled water, please? Beijing south water quality is more worse?

Felicityzhao: Beijing tap water pipe is connected to the Internet, all the water quality in Beijing.

Stay cats meow: when we drink water to boil often have suspended sediment, or smell. This water is unqualified, please? The water quality is hard and can lead to stone?

Felicityzhao: the sediment in the water is calcium carbonate, magnesium, calcium carbonate, magnesium is the water of natural material, has no effect on people's health.

Reallu001: how long does it take to replace water purifiers, washing a best?

Felicityzhao: water purifiers front filter according to the use of water quantity and water quality, generally change once a month, activated carbon replaced every two months.

Hu trapped trapped: dare I ask experts to answer ~ still curious, today I tested the tap water nitrate (nitrogen), concentration is 2.1 mg/L, 9.0 mg/L, would you say is where to take the water?

Felicityzhao: "9.0 mg/L", is the day our laboratory water measured ＆#118alues. I only responsible for the sample we had, the Beijing in other parts of the water is not clear.

BuBu ao well: my home baby 6 months, have direct drinking water dispenser is the neighbourhood called, excuse me for a long time to drink the water? For the baby, what is the best water to the powder?

Felicityzhao: the water in the village water dispenser, mostly soft water, suggest drinking TDS (total soluble solid content) at around 200 water more appropriate.

Hao xiangg: tap water in Beijing just be taken out after have a chlorine taste, is that normal?

Felicityzhao: tap water chlorine is to guarantee the health security of water, so the smell of chlorine is normal.

The jasmine scent the room: how can we know whether TDS 200?

Felicityzhao: natural mineral water bottle labels are on.

Qi ambitious _dvk: good drink plain boiled water or mineral water?

Felicityzhao: drink plain boiled water is safe, but drink high quality natural mineral water healthier.

Wait for the annual vacation: tap water to boil after floating on the surface of a layer of floc is what?

Felicityzhao: calcium carbonate, magnesium precipitation.

Na uz card 12: everyday drink water, please?

Felicityzhao: high quality natural mineral water.

Cola: 51 with pats the wedding photographer of disinfection by-products in tap water have what simple safe method can get rid of?

Felicityzhao: activated carbon, is the best way to remove the disinfection by-products.