All your concerns about secondary water supply are here.

With the increasing number of high-rise residential buildings, secondary water supply has become a problem closely related to people’s livelihood. Recently, some citizens have reported that there is a problem with the secondary water supply in their homes: some homes are empty, but the water meters are turning; Some question that there is a lot of water consumption in the home, but the property cannot be solved; Some people think that the water pressure of secondary water supply in the home is a little low, and hope that the water pressure can be high … The problem of secondary water supply has become one of the hot issues of public complaints.

A citizen who lives in Mulan Garden, Dragon City, Oriental reported that his home is a secondary water supply. In the past, the water used to be normal and the water pressure was high. "The bath is standing far away, and the water from the faucet can also be drenched." However, since the water supply company adjusted the water pressure, the water pressure in the home has become lower. Many residents in the same building have the same confusion, and the water experience is not as good as before. It is suggested that the water supply company adjust the water pressure to the same high as before.

The reporter learned from Huayan in Wuhu that the high water pressure has an impact on the lives of residents in the community! With the change of occupancy rate and water consumption, Wuhu Huayan will adjust the secondary water supply pressure according to the relevant national standards to achieve energy-saving, efficient, time-saving and labor-saving high-rise water supply!

"At this stage, before 2015, most of the secondary water supply facilities and pump rooms in Wuhu City were built and operated by real estate enterprises. After delivery, the operation and maintenance of the secondary water supply equipment were managed by the residential property company. In case of insufficient pressure and increased water charges, the main target of citizens’ consultation and reflection was our water supply company." Wuhu Huayan staff introduced that due to some enterprises’ unprofessional management, poor service, aging facilities unable to maintain, untimely cleaning and disinfection of water tanks (pools), and chaotic use of equipment brands and quality, failures occurred from time to time, which brought hidden dangers to water supply safety. The water supply company does not own the property rights of these secondary water supply facilities, nor is it authorized to manage these equipment, only to ensure that the water is qualified when it enters the community.

In 2015, Wuhu City issued the Measures for the Administration of Secondary Water Supply in Wuhu City and other relevant laws and regulations, requiring that the management of secondary water supply be comprehensively strengthened to ensure the safety of urban water supply. Subsequently, Wuhu Huayan actively participated in the formulation of secondary water supply standards, project construction and handover, and 66 projects have been completed and put into operation. It has played a positive role in promoting the standardization construction of secondary water supply facilities in Wuhu, and also opened a good start for the future work of "unified construction and unified management" of secondary water supply.

The reporter learned that the problems reflected by residents of secondary water supply are mainly in the following aspects:

Is the water pressure of secondary water supply as high as possible?

Some residents may think that the higher the water pressure, the better, which is more comfortable to use. In fact, there is an upper limit on the pressure of water supply pipeline. If the pressure of water supply is too high, it will do great harm to pressurizing equipment, water supply equipment and water consumption equipment. According to the standard of Technical Specification for Secondary Water Supply Project in Anhui Province, the pressure of the lowest-level household pipe in each partition should not exceed 0.35Mpa. If the community supplies water with ultra-high pressure for a long time, it will cause great harm.

Water supply exceeding the design pressure will not only lead to the long-term overload operation of the pressurized water pump and increase the power consumption (increase the owner’s share of electricity), but also the pressurized related equipment (water pump, check valve, connector, butterfly valve, etc.) will be easily damaged. Long-term ultra-high pressure water supply, the pressure of water supply pipeline exceeds the design value, which is easy to cause water leakage and damage of water supply equipment pipeline (especially pipeline joints and bends in weak links), and increase the phenomenon of leakage and pipe explosion. On the one hand, it will often stop water maintenance, affect residents’ lives, on the other hand, it will also cause water waste and increase the water sharing of residents. Because the water pressure requirements of household sanitary wares and household appliances are designed according to national standards, the long-term high water pressure of households will also lead to the damage of the toilet bowl, affect the service life of water heaters and faucets, and the household water consumption will also exceed the normal range, resulting in an increase in electricity bills.

I am away from home for a long time, why does the water meter generate expenses?

This is because there is air in the water pipe due to the pressure of the pipe mixed with air and the change of water temperature, and the pulsation effect caused by it makes the water meter installed in some positions slowly move when there is no running water. Wuhu Huayan suggested that users should contact the management unit of secondary water supply to help close the valve before and after the water meter, so as to avoid idling of the water meter.

Why does my home use secondary water supply on the fifth floor?

This is designed according to the actual situation of the developer in the early stage of construction, which may be caused by the high floor height, high terrain and low local water pressure.

Is the water quality of secondary water supply guaranteed?

Since the promulgation of the Measures for the Administration of Secondary Water Supply for Urban Residential Buildings in Wuhu City in 2015, according to the relevant regulations, the secondary water supply management unit needs to clean the secondary water supply tank every quarter, and the health and epidemic prevention department needs to conduct random inspections and issue relevant water quality test reports.