Disclosure announcement transmitted by euro adhoc.
  The issuer is responsible for the content of this announcement.

03.02.2005

SW Umwelttechnik is acquiring a 100% stake in Alpha Umwelttechnik
GmbH, thereby extending its leadership in the Austrian market for
separation and wastewater treatment technology.

Klagenfurt based Alpha Umwelttechnik is a major supplier of
separation systems, small-scale wastewater treatment plants, and
sewerage and shaft systems in Austria. Last year the company, which
has a headcount of 23, posted revenue of EUR5.5 million.

SW Umwelttechnik is acquiring Alpha Umwelttechnik GmbH from
Semmelrock Baustoffindustrie GmbH, a Wienerberger Group company, with
retroactive effect from 1 January 2005. The parties have agreed to
keep the purchase price confidential.

The takeover will extend the leadership of SW Umwelttechnik’s Water
Conservation sector on its home market — particularly in the
separation technology (petrol and grease separators), small
wastewater treatment plant and rainwater recycling segments.

SW Umwelttechnik’s market and technological leadership in Austria
gives it a strong platform for continued expansion in Central
European growth markets. The company is currently building new
production facilities for its Water Conservation sector in Budapest
and Temesoara, Romania.

A photograph of the Alpha Umwelttechnik works is available for
download on www.sw-umwelttechnik.at/.

end of announcement                    euro adhoc 03.02.2005 08:00:00 

Further inquiry note:

DI Heinz Wolschner, Vorstand der SW Umwelttechnik
Tel.: 0043/463/32109-0, Fax: 0043/463/37667
MMag. Christian Riel, Finanzen/Investor Relations
Tel.: 0043/664/4337105, Fax: 0043/1/3688686,
mailto:christian.riel@sw-umwelttechnik.at
Website: http://www.sw-umwelttechnik.at

Branche: Technology
ISIN: AT0000808209
WKN: 080820
Index: WBI, ATX Prime, ViDX
Börsen: Berliner Wertpapierbörse / free trade
Baden-Württembergische Wertpapierbörse / free trade
Börse Düsseldorf / free trade
Wiener Börse AG / official dealing