Direct answer
Major concern. Willow, maple, poplar, and elm send roots 30+ feet seeking water. Root intrusion is a top-3 cause of premature drain field failure. Remove or relocate trees within 25 feet of drain field components.
Authoritative sources
- US EPA SepticSmart ↗
EPA-recommended pumping schedules and inspection cadence for residential septic systems.
- Hamilton County Public Health ↗
County health department oversight of septic permits and inspections in Hamilton County, OH.
- Warren County Combined Health District ↗
Permit authority for septic installation and replacement in Warren County, OH.
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