---
title: "John A. Farnsworth, Title 5 System Inspector SI #2945 | Title 5 Roster"
description: "John A. Farnsworth is a MassDEP-approved Title 5 System Inspector (SI #2945) based in Lancaster, MA. Approval expires June 30, 2029 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/john-a-farnsworth-si2945/
---

# John A. Farnsworth, Title 5 System Inspector (SI #2945)

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

* **SI number:** #2945
* **Approval expires:** June 30, 2029
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Farnsworth Engineering
* **Based in:** Lancaster, MA
* **County:** Worcester County

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