What are the regulations regarding temporary water use in construction projects?

If it isn’t specified in the contract, then the actual price of industrial water should be applied!

I specifically downloaded from *Longwang a calculation scheme for temporary water use at construction sites for netizens: (one was selected from several options) for the original poster’s reference: Calculation Scheme for Temporary Water Use at a Construction Site in Chengdu. The building area is 29,197 m2. The temporary water supply at this construction site includes two systems: water supply and drainage. The water supply system includes water for production, domestic use, and fire fighting. The drainage system includes the on-site drainage system and the domestic drainage system. Calculation of the temporary water supply volume and pipe diameter on site: q1 = k1 × ∑Q1N1K2 / (8 × 3600). Since the concrete used in the construction of this project is ready-mixed concrete, attention is primarily given to the water required for pouring the concrete, including water for cleaning the formwork and for curing the concrete ； For concrete poured on-site, the water consumption rate for pouring concrete is taken as N1 = 300 (L/m3). Approximately 600 m3 of concrete is poured per work shift; therefore, K1 = 1.05 and K2 = 1.5 are used. For temporary water supply at the site: q1 = 1.05 × (300 × 600 × 1.5 / 8 / 3600) = 9.375 (L/S). For domestic water use: q2 = P1 × N3 × K3 / (2 × 8 × 3600), where P1 is the number of workers during peak construction times (P1 = 1300 people), N3 is the water consumption rate per worker at the construction site (N3 = 60 L/person·day), and K3 is the coefficient accounting for uneven water usage (K3 = 1.5). Thus, q2 = (1300 × 60 × 1.5) / (2 × 8 × 3600) = 2.03 (L/S). The total water flow required at the site is: q3 = q1 + q2 = 9.375 (L/S) + 2.03 (L/S) = 10.625 (L/S). For fire-fighting purposes, the water flow requirement is q4 = 11 (L/S). Since 10.625 (L/S) < 11 (L/S), the total water consumption is taken as Q1 = q4 = 11 (L/S). To determine the diameter of the water supply pipe, D1 = 1/2, with V = 1.5 m/s; this results in a diameter of 0.097 m. A water supply pipe with a diameter of DN100 mm will be sufficient to meet the requirements. DN50mm galvanized water pipes are used as the branch pipes in the residential area. Drainage system: All types of wastewater from the construction site must be treated and, once they meet the required standards, discharged into the urban drainage network. Drainage ditches are installed along temporary facilities, the perimeters of buildings, and construction roads, with appropriate drainage slopes provided. Domestic wastewater and construction wastewater are sent into municipal pipelines after being treated through sedimentation. The drainage ditches should be regularly cleaned to keep them unobstructed. Water used for production and daily life is treated through sedimentation, while wastewater from toilets undergoes three-stage septic treatment. Car washing stations are installed at the entrances and exits of the construction site to clean vehicles leaving the site, thereby reducing dust carried by these vehicles. (Relevant regulations not found) This post was last edited by chuwyc45 on 2009-2-15 18:37]

It seems that there are no corresponding regulations or requirements; if nothing is specified in the contract, the two parties can also negotiate and sign a supplementary agreement to the contract later on； Additionally, it is recommended to check the original project budget quote to see if temporary water usage for construction has been included. If it has, as the owner, a meter can be installed at the main water inlet at the construction site to measure the water consumption and charge accordingly, with the amount deducted from the project settlement payment. Of course, the water fee should be based on the charging standards set by the local water authority! For reference!

When a construction team uses water, a water meter must be installed; the cost is calculated based on the amount of water used, and payment is made accordingly, rather than the owner providing water for free； But in many cases, the construction contractors use the owner’s facilities directly, including electricity for construction purposes

It is recommended to refer to Appendix E in the \"Standard for Construction Organization Design of Chemical Engineering Projects\" HG20235-93.

To use water temporarily for construction purposes, a request for temporary water use must be submitted to the owner in advance. This request should specify the amount of water required (daily usage and maximum usage during peak times), as well as the deadline for its use. Along with the request, drawings showing the layout of the temporary water supply pipes must be provided, indicating details such as the pipe diameter, route, and burial depth. The temporary water supply pipelines are laid underground, with the burial depth exceeding that of the frozen soil. The pipes are connected by welding; after the trench is dug, the bottom of the trench is compacted with plain soil before the pipelines are laid. Good-quality soil is used for the bottom layer of backfill; after it is buried to a depth of 300 mm, it is watered and compacted before the next layer of fill is added. The part of the pipeline that is exposed above the ground surface is insulated with 40 mm thick centrifugal glass wool to prevent cracking due to freezing in winter. Welding work must be carried out by qualified welders. Before starting the work, check whether there are any flammable materials in the vicinity and ensure that fire extinguishing equipment is available. After completing the task, carefully check to ensure there are no remaining embers; only after confirming the absence of any heat sources can you leave the site. After the pipeline installation is completed, a hydrostatic test is carried out at a pressure of 1.6 MPa; the test is considered successful if there are no leaks at the welds and joints. Municipal water must be equipped with water meters that have passed inspection by the relevant authorities; those who deliberately tamper with the seals on these meters or alter their operation mode, thereby affecting accurate measurement, will be subject to penalties in accordance with the relevant regulations set by the water supply authorities.

Yes, HG20235-93 can be used as a reference