Daniel B. Johnson, Title 5 System Inspector (SI #962)
Daniel B. Johnson is on the NEIWPCC list of MassDEP-approved Title 5 System Inspectors dated October 2, 2026 (SI #962), based in Hamilton, MA. Approval on that list runs to June 30, 2028.
| SI number | #962 |
|---|---|
| Approval expires | June 30, 2028 |
| Approved by | Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC |
| Business listing | Domestic Septic Design, Inc. |
| Based in | Hamilton, 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.