Recommended pumping schedule
|Number of People||1||2||3||4||5||6||7||8||9|
|Estimated septic tank pumping Frequency (in years)|
|500 Gal. Tank||5.8||2.6||1.5||1.0||0.7||0.4||0.3||0.2||0.1|
|1,000 Gal. Tank||12.4||5.9||3.7||2.6||2.0||1.5||1.2||1.0||0.8|
|1,500 Gal. Tank||18.9||9.1||5.9||4.2||3.3||2.6||2.1||1.8||1.5|
Note: More frequent pumping is needed if garbage disposal is used. Existing customers are sent a reminder card based upon tank size, number of people on the system and garbage disposal use.
- Data provided by Oregon State University Extension Service.