---
title: "Mark S. Bartlett, Title 5 System Inspector SI #1131 | Title 5 Roster"
description: "Mark S. Bartlett is a MassDEP-approved Title 5 System Inspector (SI #1131) based in Naples, FL. Approval expires June 30, 2028 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/mark-s-bartlett-si1131/
---

# Mark S. Bartlett, Title 5 System Inspector (SI #1131)

Mark S. Bartlett is on the NEIWPCC list of MassDEP-approved Title 5 System Inspectors dated October 2, 2026.

* **SI number:** #1131
* **Approval expires:** June 30, 2028
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Listed under own name
* **Based in:** Naples, FL
* **County:** Out-of-state inspectors

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