The Polish law regulations regarding the environmental waters (surface and ground) monitoring have been cited in the report. Also basic analytical methods for water quality control, commonly used in hydrogeology and environment protection, have been described.
All the presented methods have been used for investigations of the influence of Lignite Strip Mine "Bełchatów" on river water quality in the upper Warta basin, which are the main receivers of waters from the strip drainage system.
The main physico-chemical features as well as micro and macro components and environmental isotope concentrations were measured in the surface and ground waters in the hypothetical strip interaction region. It has been found that the outfall of mine pumped waters to the Widawka river do not spoil water quality, which preserves the first class of purity in the course between Ruszczyn up to the Warta river. The forecast of the salinity increase for ground waters pumped by the protection barrier of salt deposit Dębina have been worked out for water table altitude +50.0 m below the sea level (state in December 2000). The range of the wet ash deposit interaction on water quality pumped by the "Bełchatów" Mine drainage system have been determined and evaluated.