We’ve discussed how periodically resting all of parts of a drainfield can restore soil infiltration. Next we take a look at how additional pretreatment can help drainfield restoration.If the drainfield is having problems due to organic loading, you might be able to restore the drainfield with additional pretreatment, which reduces the loads to the drainfield. Over time this will help microorganisms in the soil breakdown the biomat, restoring some of the lost capacity.In order to determine if the system is organically overloaded, you need to analyze the septic tank effluent using two measures: biological oxygen demand (BOD) and total suspended
