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GB 50788-2012: Technical code for water supply and sewerage of urban
GB 50788-2012
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50788-2012
Technical Code for Water
Supply and Sewerage of Urban
ISSUED ON: MAY 28, 2012
IMPLEMENTED ON: OCTOBER 1, 2012
Jointly issued by: Ministry of Housing and Urban-Rural Development of
the People's Republic of China;
General Administration of Quality Supervision,
Inspection and Quarantine of the People's Republic of
China.
Table of Contents
Foreword ... 4
1 General Provisions ... 8
2 Basic Requirements ... 9
3 Water Supply ... 11
3.1 General Requirements ... 11
3.2 Water Source and Water Abstraction ... 11
3.3 Water Pumping Station ... 12
3.4 Water Transmission and Distribution Pipe Network ... 12
3.5 Water Treatment ... 13
3.6 Building Water Supply ... 14
3.7 Building Hot Water and Purified Drinking Water ... 15
4 Wastewater ... 16
4.1 General Requirements ... 16
4.2 Building Drainage ... 17
4.3 Sewer ... 17
4.4 Drainage Pumping Station ... 18
4.5 Sewage Treatment... 19
4.6 Sludge Treatment ... 19
5 Reuse of Sewage and Use of Rainwater ... 21
5.1 General Requirements ... 21
5.2 Source of Reclaimed Water and Its Water Quality ... 21
5.3 Water Reclamation Safety Guarantee ... 21
5.4 Use of Rainwater ... 22
6 Structure ... 23
6.1 General Requirements ... 23
6.2 Building ... 25
6.3 Pipe ... 25
6.4 Structural Earthquake-resistance ... 26
7 Machinery, Electric and Automation ... 28
7.1 General Requirements ... 28
7.2 Mechanical Equipment ... 28
7.3 Electrical System ... 29
7.4 Instrument and Automation Control System ... 29
Explanation of Wording in This Code ... 31
List of Quoted Standards ... 32
1 General Provisions
1.0.1 This code is prepared with a view to guarantee the urban water safety
and water environment quality, maintain the health water circulation and
regulate the basic function and technical performance of urban water supply
and drainage systems and facilities.
1.0.2 This code is applicable to the planning, investigation, design, construction,
acceptance, running, maintenance and management, etc. of systems and
facilities relevant to urban water supply, drainage, wastewater reclamation and
reuse and rainwater utilization.
For urban water supply, systems and facilities for water intaking, delivery,
purification, distribution and building water supply are included; for urban
sewerage, systems and facilities for building drainage as well as collection,
delivery, treatment and disposal of rainwater and sewage are included; for
sewage reclamation and reuse and rainwater utilization, urban sewage
reclamation and reuse and rainwater utilization systems as well as water and
rainwater utilization facilities in local area, residential area and building are
included.
1.0.3 The planning, investigation, design, construction, running, maintenance
and management of urban water supply and drainage systems and facilities
shall comply with the principles of making safety water supply, service function
guarantee, resource conservation and environment protection keep
harmonious development with the natural circulation of water.
1.0.4 Besides meeting those specified in this code, the planning, investigation,
design, construction, running, maintenance and management of urban water
supply and drainage systems and facilities shall also comply with those
stipulated in the current relevant standards of the nation; when relevant current
standards are inconsistent with those specified in this code, those specified in
this code shall be observed.
2 Basic Requirements
2.0.1 Water supply and drainage system compatible with the development
demands must be constructed in the urban to maintain the ecological security
of water environment.
2.0.2 Urban water supply and drainage planning shall be based on the master
plans of the region, urban and town, and shall be in harmony with water
resource planning, water pollution control planning, ecological and
environmental protection planning and disaster prevention planning, etc.
2.0.3 Urban water supply and drainage facilities shall be provided with
capacities for responding to natural disaster, accident disaster, public health
event, social security event and other emergency incidents.
2.0.4 The flood control criteria for urban water supply and drainage facilities
shall not be less than the corresponding fortification requirements of serviced
town and shall have appropriate safety margin.
2.0.5 Qualified materials and facilities must be used for urban water supply and
drainage facilities. Meanwhile, the materials and facilities of urban water supply
facilities must meet sanitary security requirements.
2.0.6 Water-saving and energy-saving technology, equipment, instrument and
product shall be adopted for urban water supply and drainage system.
2.0.7 In urban water supply and drainage system, construction relevant to
production safety, environmental protection and water-saving facility shall be
designed, constructed and put into operation together with the principal part of
the project.
2.0.8 Corresponding operation standards shall be prepared for the running,
maintenance and management of urban water supply and drainage systems
and facilities and be enforced strictly.
2.0.9 The construction and management for relevant facilities must be carried
out during the construction and running of urban water supply and drainage
engineering to meet the requirements for production safety, occupational
sanitation safety, fire safety and safety and security.
2.0.10 Noise, wastewater, exhaust and solid wastes produced during the
construction and running of urban water supply and drainage engineering shall
not cause harm to surrounding environment and personal health and measures
shall be taken to reduce the discharge of greenhouse gases.
2.0.11 Inflammable, explosive and toxic dangerous chemicals used and
3 Water Supply
3.1 General Requirements
3.1.1 Urban water supply system shall be provided with the ability of assuring
continuous and uninterrupted water supply to urban and meeting the water
utilization requirements by urban regarding water quality, water volume and
water pressure.
3.1.2 The water quality of drinking water in urban water supply must comply
with the national current standard “Standards for Drinking Water Quality”.
3.1.3 Water supply scale shall guarantee the maximum daily water
consumption within the term of years specified by the scope of water supply.
3.1.4 Urban water consumption shall be in harmony with urban water resources.
3.1.5 Urban water supply planning shall, based on science forecasting of urban
water consumption, reasonably develop and utilize water resources, coordinate
the layout of water supply facilities and guide the water supply engineering
construction correctly.
3.1.6 Urban water supply system shall be provided with sound water quality
monitoring system, qualified testing personnel and instrument and equipment
to implement strict and effective supervision and control over water quality.
3.1.7 Complete and accurate water quality monitoring file shall be established
for urban water supply system.
3.1.8 Water supply and utilization must be measured.
3.1.9 When urban water supply system requires to cut off the water supply,
notification shall be given in advance or timely.
3.1.10 When works of urban water supply system are reconstructed and
extended, it is re...