!!!Kläranlagen

Sewage Treatment Plants, waste water clarification plants. For reasons 
of hygiene, waste water from households and industry in enclosed 
settlement areas is collected in sewage systems and, before being 
discharged into rivers and lakes, subjected to a biological 
clarification process using oxybiotic bacteria.

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As of 1994, about 76 % of the population in Austria was connected 
to biological sewage treatment plants (over 95 % to about 1000 
plants serving over 500 residents each). The number of smaller plants 
is increasing rapidly. Most sewage from business and industry is also 
clarified biologically. Sewage treatment plants have resulted in a 
great improvement in the biological quality of Austria's  Rivers and 
Streams..


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