Mark Cottrell, Title 5 System Inspector (SI #4549)
Mark Cottrell is on the NEIWPCC list of MassDEP-approved Title 5 System Inspectors dated October 2, 2026 (SI #4549), based in Haverhill, MA. Approval on that list runs to June 30, 2029.
| SI number | #4549 |
|---|---|
| Approval expires | June 30, 2029 |
| Approved by | Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC |
| Business listing | Clearwater Industries |
| Based in | Haverhill, MA |
| County | Essex County |
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Source: NEIWPCC System Inspector list, retrieved 2026-10-12. No phone or email is published on the source list. A listing is not an endorsement.