---
title: "Robert Kefalas, Title 5 System Inspector SI #15109 | Title 5 Roster"
description: "Robert Kefalas is a MassDEP-approved Title 5 System Inspector (SI #15109) based in Lexington, MA. Approval expires November 1, 2028 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/robert-kefalas-si15109/
---

# Robert Kefalas, Title 5 System Inspector (SI #15109)

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

* **SI number:** #15109
* **Approval expires:** November 1, 2028
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Listed under own name
* **Based in:** Lexington, MA
* **County:** Middlesex County

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