Septic in Forest Hills, and why it is the way it is
615 Septic Tank Pumping is a septic tank pumping company serving Nashville and Davidson County, and Forest Hills is part of its routed service area.
Forest Hills is an incorporated city inside Davidson County that kept its own charter when Nashville and the county consolidated in 1963, and it looks the way it does for a reason that runs straight back to septic. In 1946 Davidson County revised its subdivision regulations to raise minimum residential lot sizes to half an acre, specifically to give septic drain fields room to work on the shallow limestone base beneath the county. The large lots, mature trees and complete absence of commercial development that define Forest Hills today are the built form that rule produced.
Which means the septic systems here are not an afterthought on a suburban lot — they are the reason the lot is that size. Fields are generally well proportioned to the houses they serve, and where owners have maintained them these are some of the better-behaved systems in the county. The problems in Forest Hills are rarely about undersized fields. They are about age, and about access.
Access is the practical issue on almost every Forest Hills call. Half-acre-plus wooded lots with eighty years of mature landscaping mean tank lids disappear. They end up under established plantings, under regraded lawn, beneath a terrace or a drive that was added decades after the tank went in. Hand-digging to a buried lid is what adds $50 to $200 to a pump-out, and on these properties it is the norm rather than the exception. It is also why we hand-dig rather than bringing a machine anywhere near a mature root system or a stone terrace — the cost of a torn-up lawn on a lot like this dwarfs the cost of the pumping.
Risers are the obvious answer here and are under-used. Bringing both lids to grade costs $300 to $600 once, and on a property where every future service would otherwise start with an hour of careful digging around root systems, it pays for itself faster than almost anywhere else in Davidson County. Fitted during a scheduled pump-out, the excavation only happens once.