![]() In fact, if you buy a house that was built in the 1970s, there is a good chance it will have one of these old tanks. Meanwhile, the older tanks seem to be standing the test of time and some seem to be even sturdier than modern ones. Interestingly, some modern septic tanks decay a lot quicker than the older ones.įor instance, many homeowners have observed significant deterioration of some new tanks when pumping them for the very first time (within 2-5 years of installation). So, it was not uncommon for people to order an entire house with a precast tank as an add-on.īut even though precast tanks began gaining traction in the 1970s, the age-old practice of building tanks on-site was still pretty common.Īnd these tanks were designed differently from what we currently have.įor instance, in 1995, a new code was introduced that allowed for an open tee as an inlet instead of the 90-degree elbow that was traditionally used in older systems. They were mass-produced and shipped out to lots of homes in the country and some of them are still in use to date.Ĭoincidentally, this was also the time when ordering an entire house as a kit became popular. The first precast tanks of the 1970s were made of metal as opposed to concrete and they were commonly referred to as dickey tanks.ĭickey tanks were typically 500- gallon tanks that had round metal vessels that served as lids. When concrete tanks were introduced, they were molded using planks of wood after which concrete was poured.īut in the 1970s, precast tanks were introduced and that helped to bring costs down while also increasing the efficiency of the septic systems. Waste management is as old as human civilization although the invention of septic tanks didn’t come until the 1860s.Įven then, the systems were anything but perfect but our forefathers continued innovating and improving and the septic tank revolution continued until we had what we have today.
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