The Massachusetts Department of Environmental Protection (DEP) has conducted a Source Water Assessment (PDF) for drinking water produced by the Springfield Water and Sewer Commission and has assigned a system susceptibility ranking of moderate.

The drinking water produced by the Springfield Water and Sewer Commission originates from a surface water supply located in Blandford and Granville, Massachusetts. Two water bodies make up the water supply:

• Borden Brook Reservoir (Source Water ID Number 1281000-04S)
• Cobble Mountain Reservoir (Source Water ID Number 1281000-02S)