How long do septic systems last?
Durability of septic systems varies widely. Some systems constructed in Anchorage in the 1960’s still pass adequacy tests, while some systems constructed in the early 90’s have already failed. It depends on many factors, including design, soil conditions, number of residents in the household, and whether the system is abused or not.
Septic systems are designed to provide long-term, effective treatment of household waste when operated and maintained properly. However, most systems that fail prematurely are due to improper maintenance. Less serious problems are usually with plumbing (such as pipe blockages from tree roots growing into the pipe). Sometimes, the septic tank, although durable, can deteriorate or have other structural problems. The most serious problems are the result of a clogged drainfield. Unfortunately, this is the most expensive to repair. It is important to keep in mind that repair costs vary greatly by the type of maintenance needed. Minor repairs (such as adding risers to the surface) might cost as little as a few hundred dollars, while major repairs (such as replacing a clogged drainfield) can cost up to $20,000 or more to replace.
Septic systems are designed to provide long-term, effective treatment of household waste when operated and maintained properly. However, most systems that fail prematurely are due to improper maintenance. Less serious problems are usually with plumbing (such as pipe blockages from tree roots growing into the pipe). Sometimes, the septic tank, although durable, can deteriorate or have other structural problems. The most serious problems are the result of a clogged drainfield. Unfortunately, this is the most expensive to repair. Once the absorption field is clogged, it must be replaced and can cost thousands of dollars. For more information, see Septic System Operation and Maintenance.
