Built in 1900–01, it is one of the two oldest buildings at Providence's main sewage treatment facility.

When originally built, the structure had a concrete first floor, a wooden second floor, and a loft area accessed by catwalks, and was used to hold and deliver chemicals used to neutralize the wastewater arriving via the Ernest Street Sewage Pumping Station.

In the 1930s the plant was converted to use an active sludge process, and the interior of the building was altered to be a single large chamber.

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