Water supply and sewerage
Working documentation: from 22 days
Price from 50000 roubles
An incorrectly designed water supply or sewerage system can delay commissioning, trigger supervisory comments and lead to costly rework of installed pipelines. The “Water Supply and Sewerage” section is part of AYU-Project’s broader engineering systems design scope, covering building and site utilities: HVAC, power supply, extra-low-voltage systems, fire protection, water supply and drainage. AYU-Project develops design and working documentation across six areas: external water supply networks, internal water supply systems, drainage systems, high-pressure pipelines, pumping stations and internal fire-fighting water supply systems, from residential buildings and shopping centres to industrial enterprises and critical infrastructure facilities. SRO approval, regulatory review, fixed contract pricing and corrections to expert comments within the agreed scope are part of AYU-Project’s standard workflow.
What does AYU-Project design in the “Water supply and sewerage” section?
The section covers the full water supply and sewerage scope of the facility: from connection to municipal networks to the final plumbing fixture inside the building, and from wastewater collection to discharge into a central sewer or local treatment facility.
AYU-Project designs the following systems and facilities:
- External water supply networks - trunk and distribution water supply networks, building inlets, water metering units, wells, switching chambers and pressure-reducing units; design is carried out under SP 31.13330.2021 and SP 129.13330.2019.
- Internal water supply systems - domestic and drinking water supply, hot-water and circulation systems, water softening and treatment systems, and booster units for buildings where external network pressure is insufficient; standard - SP 30.13330.2020.
- Drainage systems - internal domestic and industrial sewerage, external gravity and pressure networks, stormwater drainage, local treatment facilities, grease traps and oil separators; standards - SP 32.13330.2018 and SP 30.13330.2020.
- High-pressure pipeline systems - process pipelines of categories I-V under GOST 32569-2013, high-pressure transit water pipelines, and systems designed for water-hammer resistance and thermal-expansion compensation; regulated by TR CU 032/2013.
- Pumping station design - water supply and sewerage pumping stations, fire-suppression pumping stations and booster units with variable-frequency drives; designed under SP 31.13330.2021 and SP 32.13330.2018.
- Internal fire water supply (IFWS) - independent and combined IFWS, water-filled and air-filled systems, zoned systems for high-rise buildings, fire extinguishing pumping stations; standard - SP 10.13130.2020.
What is “Design of Engineering Systems” and why is water supply a part of it?
Engineering systems design covers the full set of utilities that allow a building or structure to operate: heat supply and heating, ventilation and air conditioning, power supply, extra-low-voltage networks, fire safety systems, water supply and drainage. None of these systems exists in isolation; they are connected structurally, technologically and through regulatory requirements.
Water supply and sewerage are central to this engineering complex. Fire-suppression pumping stations depend on the external water-main parameters; pump power supply is coordinated with the electrical section; wastewater pumping-station automation is coordinated with automation and telemechanics; and internal fire-fighting water supply is linked to the automatic fire alarm system. AYU-Project manages related sections within one project team, reducing technical contradictions and shortening documentation approval time.
What facilities does AYU-Project design in terms of water supply and sewerage?
AYU-Project designs water supply and sewerage systems for civil, industrial and infrastructure construction projects - from compact administrative buildings to large multifunctional complexes and manufacturing enterprises.
Residential and multi-apartment buildings
For residential complexes, AYU-Project develops cold and hot water supply systems with circulation loops, booster units for high-rise sections, internal sewerage with drainage stacks, stormwater systems and internal fire-fighting water supply. For buildings above approximately 15-17 storeys, pressure zoning is designed so that domestic cold water and fire-fighting water supply operate in independent zones.
Administrative, office, retail and entertainment facilities
Office and commercial buildings require high-capacity hot-water systems, grease traps for food-service tenants, branched internal fire-fighting water systems with ring mains, and stormwater drainage with oil separators for above-ground and underground parking areas.
Industrial enterprises and production facilities
For industrial facilities, AYU-Project designs high-pressure process water pipelines under GOST 32569-2013, recirculating water supply systems, industrial sewerage with local treatment facilities, and category I reliability pumping stations with standby units. For facilities classified as hazardous production facilities, the documentation is supported by industrial-safety review requirements of Rostechnadzor.
Infrastructure and social facilities
Hospitals, schools and sports facilities have increased requirements for water-supply reliability. AYU-Project designs these systems with sanitary standards, reliability categories and redundancy requirements in mind.
How does AYU-Project organize the development of design documentation and working documentation for water supply and sewerage?
The work is carried out in stages, from initial-data analysis and obtaining technical specifications from the utility provider to issuing a working-documentation package to the installation contractor.
At the design-documentation stage, AYU-Project engineers define system schematics, perform hydraulic calculations, justify pipeline materials, pumping equipment and fittings, and issue design inputs to related sections. The documentation is submitted for state or independent expert review; AYU-Project supports the review process and resolves expert comments within the agreed scope.
At the working-documentation stage, the package includes pipeline installation drawings, axonometric diagrams, detailed drawings of units and pumping stations, equipment and material specifications, and bills of quantities. Sections such as VK, NVK, ERV and TX are prepared under GOST R 21.1101-2020 and issued in electronic and paper formats.
What standards govern the design of water supply and sewerage systems?
Design covers several levels of the regulatory framework: technical regulations, codes of practice, state standards and government regulations. Compliance with the full regulatory hierarchy is checked during expert review.
- Government Decree of the Russian Federation No. 87 dated 16.02.2008 (ed. 21.10.2025) - composition of sections of the design documentation, including section 5 “Information on engineering equipment”.
- SP 30.13330.2020 “Internal water supply and sewerage of buildings” (updating SNiP 2.04.01-85*) - design of internal cold-water supply, hot-water supply and sewerage systems.
- SP 31.13330.2021 “Water supply. External networks and structures" (updating SNiP 2.04.02-84) - external water supply networks, pumping stations, reservoirs.
- SP 32.13330.2018 “Sewerage. External networks and structures" (updating SNiP 2.04.03-85) - external sewer networks, WWPS, wastewater treatment plants.
- SP 129.13330.2019 “External networks and structures of water supply and sewerage” - construction of external pipeline networks.
- SP 10.13130.2020 “Fire protection systems. Internal fire water supply system" - design standards IFWS, water consumption, fire extinguishing pumping stations.
- SP 8.13130.2020 “External fire water supply” - parameters of external networks for fire extinguishing needs.
- GOST 32569-2013 “Technological steel pipelines. Requirements for device and operation" - categories of pipelines, strength calculations, welded joints.
- TR TS 032/2013 “On the safety of equipment operating under excess pressure” - mandatory requirements for high-pressure pipelines in the coverage area of technical regulations EAEU.
- GOST R 21.1101-2020 “SPDS. Basic requirements for design and working documentation" - registration of design documentation and working documentation.
- GOST R 59643-2021 “Internal fire water supply” - requirements for documentation for IFWS stored at the facility.
- Federal Law No. 123-FZ dated 22.07.2008 “Technical Regulations on Fire Safety Requirements” (ed. 2023) - general requirements for fire water supply systems.
Why choose AYU-Project for water supply and sewerage design?
AYU-Project covers the full range of tasks in the “Water supply and sewerage” section - from external water supply to IFWS - within the framework of a single contract and a single project team, without the need to involve several contractors.
- SRO Authorization for the design of capital construction projects, including hazardous production facilities with pressure pipelines subject to registration with Rostechnadzor.
- Complexity - AYU-Project manages all related sections within one team: water supply and drainage, external water supply and sewerage, IFWS, process solutions, EOM (pump power supply), automation and telemechanics (pump station automation). This eliminates technical contradictions between sections and speeds up the examination.
- Fixed contract price - the cost is not revised during the work; all iterations required to address expert-review comments are included in the initial budget.
- Free Revisions in Response to Expert Review Comments - AYU-Project eliminates comments from state and independent expert review procedures without additional bills.
- Standard control - each set of documentation undergoes internal verification for compliance with the latest editions of SP, GOST, technical regulations and Government Decree No. 87 before delivery to the client.
- Remote work across Russia - design is carried out remotely; visiting the site - only if inspection is necessary.
Cost and timing of water supply and sewerage design
The cost and timing of development of design documentation and working documentation are determined by a combination of factors specific to water supply and sewerage systems: the list of systems included in the task (external networks, internal systems, ERW, SPS - each system increases the volume), the area and number of floors of the facility, the need for pressure zoning for high-rise buildings, the presence of high-pressure pipelines designed for strength and water hammer, the complexity of pumping equipment and requirements for its automation, as well as the need to obtain technical specifications from RSO and the scope of approvals with supervisory authorities. Approximate calculation - through the online calculator on the website.
To prepare an accurate commercial proposal, indicate in the application: the purpose and characteristics of the object (type, number of floors, area), a list of systems that need to be designed, the design stage (DD, WD or DD+WD), the availability of technical specifications from utility provider and initial design documentation. The initial consultation is free, and we work across Russia remotely.
How to order water supply and sewerage design in AYU-Project?
- Application Submission
Fill out the form on the website or call. Indicate the type of facility, its characteristics and the list of systems that need to be designed: external networks, internal water supply, sewerage, ERW, water pumping station, process pipelines. - Initial consultation and development of technical specifications
The AYU-Project engineer clarifies the parameters of the facility, determines the composition of sections of the design documentation and working documentation, identifies the need to obtain technical specifications from the RSO and the list of required approvals. Consultation is free. - Commercial Proposal and Contract
AYU-Project prepares CP with a fixed cost, broken down by systems and stages. After approval, an agreement is signed with clearly defined deadlines and documentation. - Obtaining technical specifications and collecting initial data
AYU-Project generates requests to the RSO, receives technical conditions for connection to water supply and sewerage networks, analyzes the topographical basis and source documentation. - Design Documentation (DD) Development
AYU-Project engineers perform hydraulic calculations, design schematic diagrams of all systems, develop solutions for pumping stations, and formulate tasks for related sections. Interim versions are agreed upon with the client. - Expert-review support
AYU-Project submits DD for examination, responds to requests from experts, and eliminates comments without additional payment. If necessary, support the industrial safety examination of Rostechnadzor. - Preparation and Delivery of Working Documentation (WD)
After receiving a positive expert review opinion, AYU-Project develops working documentation: installation drawings, diagrams, specifications, statements. The finished kit is sent in electronic and paper formats.
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Frequently Asked Questions
Yes, in the absence of initial documentation, AYU-Project carries out a survey of existing networks: instrumental survey of pipelines, determination of actual diameters, slopes, laying depths and technical condition. Based on the results of the survey, an executive plan is drawn up, which serves as the basis for the development of a reconstruction project.
Yes, designer's supervision of the installation of water supply and sewerage systems is formalized in an additional agreement or included in the main agreement for the development of the WD. AYU-Project engineers check the compliance of the work performed with working documentation, record deviations and coordinate technical solutions directly on site or remotely using photo reports from the installation organization.
For facilities of the I category of water supply reliability (hospitals, continuous production facilities, fire pumping stations), AYU-Project designs double connections to external networks from different directions, backup pumping units with automatic switching on of the reserve (AVR), water reserve tanks of the calculated volume, backup power supply for pumps in the I category. The composition of the reservation measures is justified by calculations at the PD stage.
Yes. The design of cold and hot water metering units - common house metering devices (CDMU) and individual metering devices (IMU) - is included in the internal water supply section. AYU-Project develops diagrams of water metering units, selects the type and accuracy class of meters, and coordinates solutions with the requirements of the resource supplying organization.
For small facilities, one technical specification with a list of all systems and requirements for them is sufficient. For large industrial facilities with process pipelines under pressure or hazardous production facility (HPF) pumping stations, it is advisable to draw up separate technical specifications - this allows for a clearer delineation of responsibilities and deadlines for each section. AYU-Project helps to create the correct technical specification at the stage of initial consultation.
Optimally - at the stage of developing an architectural concept or simultaneously with the beginning of architectural design. This allows you to immediately take into account the routing of communications, the location of pumping stations and water metering units in the design solutions of the building. Involving a designer after approval of an architectural solution often forces one to look for compromise technical solutions with additional costs.
Yes. The design of organized precipitation drainage systems - internal drains, external storm sewers and storm drainage trays - is within the competence of the AYU-Project within the framework of this section. If necessary, stormwater treatment is designed before release into a reservoir or city network.
Yes, AYU-Project accepts assignments for both the entire complex of plumbing and sewerage systems of the facility, and for individual systems. In this case, an agreement is concluded for a specific list of sections; The composition of the documentation and the cost are determined individually according to the parameters of the facility.
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