The Division of Sewerage and Drainage operates two
wastewater treatment plants, Jackson Pike and Southerly. Wastewater from
Columbus and 22 contracting suburban communities flows to one of these two
plants, who combined treated an average of 171.4 million gallons per day in
2006. The photo to the right shows the sludge digesters at Jackson Pike, which
are visible from I-71 south of downtown Columbus.
Two following two Adobe Acrobat PDF files explain the treatment process used
at both plants:
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The Division of Sewerage and Drainage operates two 
