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David L. Favreau, Title 5 System Inspector (SI #4278)

David L. Favreau is on the NEIWPCC list of MassDEP-approved Title 5 System Inspectors dated October 2, 2026 (SI #4278), based in Sterling, MA. Approval on that list runs to June 30, 2028.

SI number#4278
Approval expiresJune 30, 2028
Approved byMassachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
Business listingListed under own name
Based inSterling, MA
CountyWorcester County

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Source: NEIWPCC System Inspector list, retrieved 2026-10-12. No phone or email is published on the source list. A listing is not an endorsement.