3, aging infrastructure, paomaodilou serious. Due to historical reasons, many established urban water supply pipe network in China in the last century, 50-60 's, and some even asbestos pipes in water supply network of the old town. With the expansion of cities, the increase of population and increase of high-rise buildings, these frequent bursts of water supply network of Aging pipes and leaks, so that precious water resources are lost.

4, weak water-saving technology, water-saving promotional CLOUT was limited. In order to promote water conservation, for many years, countries and enterprises to carry out research on water-saving technology, and achieved many research results, such as water-saving equipment, water saving technologies, water-saving toilets, water-saving faucets, waterless car, pollution control facilities, these water-saving techniques, processes,Multi jet liquid filled(semi dry) type water meter
and equipment is widely used for not a lot more. Notwithstanding the completion of water-saving projects, many have not been used effectively. Caused this situation, the cover price was not reasonable causes, there is inadequate management oversight, poor promotion by the relevant authority. For example, in the various water treatment facilities and product sales, one is not large, water-saving products market, on the other hand is saving departments cannot participate in the new, enlarged, rebuilt acceptance, can only watch old drinking ware cast people, use of the product. Meanwhile, relevant departments of the Government publicity and education on water-saving methods obsolete, resulting in people's water awareness is not strong, directly affects the water-saving effect.

5, water saving lax law enforcement, it is difficult to eliminate the waste of water resources. At present, China has enacted a number of laws and administrative regulations relating to water, such as the implementation of the water law, the water conservation regulations, law on water pollution prevention and control, and so on. But there are implementation of these laws and regulations are not in place, fined escrow is more serious, and water conservation laws and regulations in some places go out of shape, changed the water effect is not obvious.
Reference difficulties
Urban water conservation is a world problem,Woltman vertical installation type water meter
the so-called tashanzhishi, jade, reference to water-saving experience at home and abroad will allow urban water conservation work in China to achieve "a multiplier" effect.

(A) planning water use and quota management

Cities, especially in water and water shortage in cities should be implemented step by step plan quota management, such practices have long spoken in United States, and Canada, and Mexico, and a small number of countries in Europe. Fixed water not water restrictions, but scientific, rational, long-term use of water.

Urban water consumption quota of approved water management was in the scientific premise, approved water lines, and practise in a fixed fee, the excess part of a moderately progressive increases and classification and the price of water, living water to the residents, businesses, institutions, business groups water of different water prices. On this basis, people living in accordance with the normal requirements, development, special types such as the cascade water prices.

Rated water consumption can effectively reduce the amount of water, promote water conservation, reduced discharge. Survey shows that less each with a cubic meter of water,Woltmann Series Water Meter
there would be fewer emissions of 0.6~0.7m3 sewage and to reduce pollution.

(B) the imposition of water for water-saving appliances

To implement water saving apparatus for saving water to supply the city with water has a very important meaning: it is estimated that an unqualified tap flow 1~6m3 water a month; a bad horse