GroundRosterIsaac Derr
| Name | Isaac Derr |
| License number | 04136 |
| License type | Sewage Enforcement Officer (SEO) |
| License status | Certified SEO — current renewal cycle through 2026-11-28 |
| License expires | 2026-11-28 |
| Based in | Alburtis, Pennsylvania 18011 |
| Phone | (610) 944-4006 |
"Based in" is the city on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.
Request a quote from Isaac Derr
How to verify this license
We publish the license details exactly as they appear in Pennsylvania's official licensing records; we do not vouch for the business itself. Before hiring, look up license #04136 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: PA Clean Water Academy - Sewage Enforcement Officers (Active), last checked 2026-08-16. Verify at the official source.
Are you Isaac Derr? Claim this listing to show your business name on it. It's free, and we confirm every claim before anything changes.