In April 2002 Municipal Office in Mszczonów obtained the Management Quality Certificate ISO 9002:1996 from the Polish Centre for Research and Certification and the Certificate PN-EN ISO 9001:2001 for three years in 2003. The Management Quality Certificate PN-EN ISO 9001:2001 was granted to the Municipal Office in 2005 for the next three years. It is the longest period which can be granted by the auditors. This way the Municipal Office in Mszczonów and its employees have been awarded by the Polish Centre for Research and Certification for high work standard and compliance with all European standards to be met in accordance with ISO by the institutions willing to be its holders. ISO certificate has been obtained by the Municipal Office again in 2008.