citytransplant
Silver Member
Interesting thread. I'm astounded as to the wide variability in pumping frequency. Generally speaking, it's a "crap shoot." Some pump religiously every 3 or 4 years (election cycles, interesting mnemonic) while others have not pumped for as long as they have owned their homes. The average national cost of septic tank pumping and cleaning is $385. Over a 30-year span, the homeowner pumping every 3 years has invested $3,850 (approximately $10.69 a month). With the cost of some of the more elaborate systems running into the tens of thousands, regularly pumping might be justifiable for some. I'm no expert, but my take-away so far from this thread is that pumping frequency among homeowners is primarily driven by: 1. the wide variability in household composition, 2. system design (including drainfield characteristics and tank size), and 3. local jurisdictional regulations.