Tarnów Municipality, 2009
                                                                                                                         
technical documentation of water purification plant in Zbylitowska Góra

Suszec Municipality, 2005-2007
                                                                                                                         
technical documentation of sewage and rain water drainage system 
in Płaza, Kryry and Mizerów

Gierałtowice Municipality, 2005 - 2007
                                                                                                                        
technical documentation of sewage system and waste water treatment plant 

length of gravitational sewage system ca. 80 km
length of pressurized sewage system ca. 16 km
length of terminals ca. 56 km

Strzelce Opolskie Municipality, 2004
                                                                                                                         
technical documentation of sewage and rain water drainage system in Dziewkowice

 Chrzanów Municipality, 2004
                                                                                                                         
technical documentation of sewage system in Luszowice, Borowiec and Płaza

Bierawka River Association of Communes, 2003
                                                                                                                         
water revitalization of Bierawka River

project of sewage management for communes situated
within the Bierawka river basin:
Knurów, Sośnicowice, Pilchowice, Bierawa, Orzesze, Czerwionka-Leszczyny