---
title: "John E. Dupras, Title 5 System Inspector SI #4017 | Title 5 Roster"
description: "John E. Dupras is a MassDEP-approved Title 5 System Inspector (SI #4017) based in North Adams, MA. Approval expires June 30, 2028 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/john-e-dupras-si4017/
---

# John E. Dupras, Title 5 System Inspector (SI #4017)

John E. Dupras is on the NEIWPCC list of MassDEP-approved Title 5 System Inspectors dated October 2, 2026.

* **SI number:** #4017
* **Approval expires:** June 30, 2028
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Trinity Engineering & Technical Svcs
* **Based in:** North Adams, MA
* **County:** Berkshire County

Source: https://neiwpcc.org/wp-content/uploads/2026/10/SI-Instate-10.2.2026.pdf (retrieved 2026-10-12)