When To Pump Your Septic


“Table below indicates pumping frequency only.” New state laws require inspections every three years for gravity type systems; annually for all other septic systems.

The frequency of cleaning a septic system will vary from house to house. These are some general guidelines although some homes may need the tank cleaned more frequently

Table I. Septic Tank Pumping Frequency in Years

Household Size – Number of Occupants
1 2 3 4 5 6 7 8 9 10
Tank-Gallons Septic Tank Pumping Frequency in Years
500 5.8 2.6 1.5 1 0.7 0.4 0.3 0.2 0.1
750 9.1 4.2 2.6 1.8 1.3 1.0 0.7 0.6 0.4 0.3
900 11.0 5.2 3.3 2.3 1.7 1.3 1.0 0.8 0.7 0.5
1000 12.4 5.9 3.7 2.6 2.0 1.5 1.2 1.0 0.8 0.7
1250 15.6 7.5 4.8 3.4 2.6 2.0 1.7 1.4 1.2 1.0
1500 18.9 9.1 5.9 4.2 3.3 2.6 2.1 1.8 1.5 1.3
1750 22.1 10.7 6.9 5.0 3.9 3.1 2.6 2.2 1.9 1.6
2000 25.4 12.4 8.0 5.9 4.5 3.7 3.1 2.6 2.2 2.0
2250 28.6 14.0 9.1 6.7 5.2 4.2 3.5 3.0 2.6 2.3
2500 30.9 15.6 10.2 7.5 5.9 4.8 4.0 3.5 3.0 2.6

Homes where one or more people are home all day, each person is equal to two people. The increased usage causes more material to be in the septic tank thus requiring the tank to be pumped more often.

Homes with a garbage disposal will need to have the septic system pumped on a much more frequent basis. Sometimes as often as every year.

 

 

 

 

 

 

 

 

 

 

Share

Schedule Your Service Appointment

We are knowledgeable and committed to provide you real value for your money.

We do only what is necessary and make sure you understand what we will do before the work begins.

CONTACT NOW

Contact Info

2614 Colby Ave,
Everett, WA, 98201

(Call Us)
(425)-905-2485

Follow Us!

CHAT NOW!