Protection of water resources /
Wastewater

[GRI 303-1] [GRI 303-2] [GRI 303-3] [GRI 303-4] [GRI 303-5]

Domestic wastewater from offices and construction site rest and refreshment facilities is discharged into the sewerage network (if connectable) or collected in sealed, nonretention tanks and transferred to an authorised recipient on the list of regulated activities in the municipality (if it is not possible to connect the office/construction site to the sewerage network). Domestic wastewater is discharged based on the requirements of the operator of the sewerage network or wastewater treatment plant, in accordance with generally applicable regulations. The industrial wastewater generated is subject to regular, periodic control for concentrations of constituents that may have a negative impact on the environment. The pollutant indicators to be determined and their permissible values are detailed in permits under the Water Law issued for the facilities. Wastewater samples are taken and tested by accredited laboratories at the required frequency. Where wastewater is generated during construction work carried out, the following treatment standards have been established:

Domestic wastewater from offices and construction site rest and refreshment facilities is discharged to sewerage networks where there is the possibility of connection. If it is not possible to connect to the sewerage system, the wastewater is collected in sealed, non-drainage tanks and is transferred to an authorised recipient. In the case of wastewater generated in connection with construction site work, a standard has been developed – ‘Safe refuelling and washing of equipment and machinery’.

Domestic wastewater from offices and rest and refreshment facilities is discharged to sewerage networks where there is the possibility of connection. If it is not possible to connect to the sewerage system, wastewater is collected in sealed, non-returnable tanks and transferred to an authorised recipient. Industrial wastewater is discharged to the sewerage devices of other entities (sewage collection station). The discharge of generated industrial wastewater is carried out on the basis of permits under the Water Law. The permissible composition and quality of wastewater discharged from the facilities are regulated by the relevant ordinances, permits under the Water Law and the requirements of recipients of wastewater. An analysis of water intake and generated wastewater is presented in Table No. 21 Water and wastewater

Table 21. Water and wastewater.

In 2022, the range of monitored indicators for water consumption was extended – this situation results in partial incomparability of the reported data year-on-year, nevertheless the volume of purchased water remained in 2022 at a similar level to 2021 with a decrease of 0.3% recorded at Group level with an increase in construction and assembly production.