Koehler Surveying, Inc.

Septic System Contractor · Upper Sandusky, OH

Confidence 80+

Last checked 2026-05-19

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Address

PO Box 28
Upper Sandusky, OH 43351

License #

Wyandot HSTS soil/designer reference list

Trades

Septic System Contractor

Trust signals

Sources

Wyandot County Public Health 2025 soil evaluator and sewage designer references list

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