Sewage

Wastewater generated by the PGNiG Group companies is discharged into the sewage system, surface water or soil based on the water permits obtained. Domestic and industrial wastewater is discharged into the sewage system. Rainwater from plant premises and access roads is discharged into the municipal sewage system, as well as into surface water and soil.

The PGNiG TERMIKA Group companies account for a large share in the volume of generated wastewater as they use water for cooling purposes. The policy of economical water management is followed during drilling work and, where possible, wastewater is reused to prepare drilling muds.

PGNiG GHPB reported higher volumes of industrial and other wastewater on drilling rigs (the latter comprising the volume of rainwater and meltwater removed from drilling rigs), which is due to the drilling of deeper wells and longer time of rig operation.

PGNiG TERMIKA EP reuses some of the process wastewater (such as effluents from boiler system blowdowns) in systems with lower quality requirements.

In and around the Mogilno UGSF and Kosakowo UGSF operated by GSP, an environmental monitoring project was carried out in order to identify possible impacts related to the discharge of salt brine (classified as an effluent) into the Puck Bay in the case of the Kosakowo CUGSF and operation of the onshore part of the project in the case of the Kosakowo UGSF and Mogilno UGSF. The results of the environmental monitoring indicate that construction and operation of underground gas storage facilities has no adverse effect on individual components of the natural environment.