---
title: "Kelvin Williams, Title 5 System Inspector SI #13216 | Title 5 Roster"
description: "Kelvin Williams is a MassDEP-approved Title 5 System Inspector (SI #13216) based in Holden, MA. Approval expires June 30, 2027 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/kelvin-williams-si13216/
---

# Kelvin Williams, Title 5 System Inspector (SI #13216)

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

* **SI number:** #13216
* **Approval expires:** June 30, 2027
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Listed under own name
* **Based in:** Holden, MA
* **County:** Worcester County

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