Montgomery County septic services.

Public Health – Dayton & Montgomery County discontinued the percolation test in Montgomery County effective 1 January 2007; soil evaluators must be professionally certified and designers must be capable of interpreting a soil evaluation. Operation and maintenance permits run five or ten years depending on the system's requirements, and existing permit holders sit on a five-year period. All household sewage system contractors must be registered and bonded with Public Health to work in the county.

Great Miami river (Superior High Quality Water, Lost creek (RM 100.0) to the CSX railroad bridge (RM 84.5)); Stillwater river (Outstanding State Water (ecological), Riffle road (RM 55.90) to the Englewood dam (RM 9.01)); Twin creek (Outstanding State Water (ecological), entire listed length). Ohio EPA's general permit for discharging household systems (OHK000004, Part II.C.2(e)) bars a new discharge to any of these, or to a tributary within one mile upstream. On those parcels the off-lot discharging route is closed and the system has to be a soil-absorption design, whatever the lot looks like.

The dominant constraint here is a water table close to the surface (23.1% of rated soils), followed by water standing on the surface (20.0%).