---
title: "Pierce Louis, Title 5 System Inspector SI #15001 | Title 5 Roster"
description: "Pierce Louis is a MassDEP-approved Title 5 System Inspector (SI #15001) based in Chelsea, MA. Approval expires February 1, 2028 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/pierce-louis-si15001/
---

# Pierce Louis, Title 5 System Inspector (SI #15001)

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

* **SI number:** #15001
* **Approval expires:** February 1, 2028
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Listed under own name
* **Based in:** Chelsea, MA
* **County:** Suffolk County

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