How to Make a Septic Tank Drain Field

A septic tank drain field is needed where there is a septic tank. Below you will find the steps to help you understand how to make a drain field.

Step # 1

The first thing to do is t choose the location, which should be away from the house but close to the tank. Make sure the field is going to be located at least 10 feet away from your garden and any water, such as a lake, river, or well.

Step #2

The next thing to do is to contact the authorities in order to verify if you need a permit to build the septic tank drain field or if you need to have the site inspected prior to starting work. Have in mind that digging a drain field is very hard work, but having to remove it and start over again is even worse. Verify all of the relevant laws and regulations prior to starting this project.

Step #3

It is very important to make sure if the soil is appropriate, by having the soil tested in your area. You will have trouble with backups if the absorption capacity is too low.

Step #4

Now it is time to start digging. You will need to dig either four 2-foot long trenches or two 50-foot trenches for a 1,000-gallon septic tank. Each trench should be 3-4 feet wide and equally deep.

Make your trenches so that they tilt downward slightly, but no more than a 1/4-inch incline for every 8 feet you have. You do not want the wastewater to pool at the bottom and rise up.

Step #5

Once the trenches are dug you will put at least 1-1 1/2 inches of gravel along the bottom of each trench.

Step #6

Now, place the pipe from the septic tank all along each trench. Use the clamps to hold the pipe in place at the septic tank drain so that it does not shift and misalign.

Step #7

Then fill the trench with another 1-3 inches of gravel and let the gravel work its way down around the pipe. Once the entire pipe is in place.

Step #8

When you have laid the pipe and gravel, drape your cloth over it. The cloth can be any type that breathes. This will keep the dirt and sand from blocking the drainage from the gravel.

Step #9

The next step is to fill the rest of the trench in with dirt so that your field is level with the ground around it. Then, you will need to wait two weeks for the ground to settle. Once the ground settles, you may probably need to add more dirt to level your field.

Step #10

Planting is an option that you should consider. There are several plants that will do well in the septic tank drainage field to keep it from looking like a complete eyesore. Make sure not to aerate or till the soil, and do not add more than 2-3 inches of topsoil.

If you have a septic tank, and you are considering the help of a professional, call JCN Plumbing to schedule an appointment for a Free Estimate to have a drain field done on your property.

Call today - (305) 770-6860