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BUTLER-HALL ENGINEERING Ltd is small, privately run environmental engineering maintenance company specializing in the servicing of Biodigester waste water treatment plants. We offer technical advice and services on any aspect of these systems, especially regarding annual maintenance and repairs. We also carry out servicing to other leading makes of air blown and air lift sewage treatment systems and water recycling systems such as Entec, Clearwater, Waterwise, and Klargester
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