Fonds consists of records accumulated by Marcel Pequegnat in his professional roles as superintendent of the Kitchener Water Commission, vice-chairman of the Grand River Conservation Commission, and president of the Arthur Pequegnat Clock Company; and records collected by him relating to the history of these bodies.

Records relating to the Kitchener Water Commission and its predecessor, the Berlin Water Works Company, span from ca. 1887 to 1961, and are mainly from 1898 to the 1930s. Records relating to the Grand River Conservation Commission cover the period from 1939 to 1943. Includes correspondence, contracts and other legal documents, reports, minutes, architectural and technical drawings, photographs and other visual material, press clippings, ephemera, and advertising material.