F’ing Septic Tanks

Depending on design, up here the tanks may be of different design, but the collars are a common place to leak, or the lids themselves. I had issues but added a weeping tile to redirect some groundwater and it was solved.
My other tank is a holding tank, and it filled in the fall. There is definitely a leak at the collar or where pipe goes in. I have to dig around and reseal it.