In 2008 the National Institute of Public Health -National Institute of Hygiene issued a certificate on the healing properties of water from the PIG / AGH-2 spring. In the same year, a certificate was issued confirming the healing properties of the Uniejów climate together with an assessment of bioclimatic conditions, as well as a climatic survey, developed by Stanisław Leszczycki Institute of Geography and Spatial Management – Polish Academy of Sciences in Warsaw.[10] Based on these documents in 2011, a positive opinion for Uniejów resort was issued - the main document of the spa resort.