---
title: "John Flannery, Title 5 System Inspector SI #66 | Title 5 Roster"
description: "John Flannery is a MassDEP-approved Title 5 System Inspector (SI #66) based in Boxborough, MA. Approval expires June 30, 2028 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/john-flannery-si66/
---

# John Flannery, Title 5 System Inspector (SI #66)

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

* **SI number:** #66
* **Approval expires:** June 30, 2028
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Flannery Septic & General Contractor
* **Based in:** Boxborough, MA
* **County:** Middlesex County

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