---
title: "Thomas W. Harrington, Title 5 System Inspector SI #14865 | Title 5 Roster"
description: "Thomas W. Harrington is a MassDEP-approved Title 5 System Inspector (SI #14865) based in Barnstable, MA. Approval expires May 1, 2027 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/thomas-w-harrington-si14865/
---

# Thomas W. Harrington, Title 5 System Inspector (SI #14865)

Thomas W. Harrington is on the NEIWPCC list of MassDEP-approved Title 5 System Inspectors dated October 2, 2026.

* **SI number:** #14865
* **Approval expires:** May 1, 2027
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Geo-Cape Environnmental Consultants
* **Based in:** Barnstable, MA
* **County:** Barnstable County

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