Septic Field Question

[sqar]

We bought and moved to an almost new house eight years ago ( house had been occupied for six months before us).
I recently noticed that only one leach line has real green grass over it with the other two with dead grass.
Any ideas of what is going on with the field?
We have not had any problem so far with two retired people living here.
Just to get an idea of septic tank condition and a new starting date in time, had it pumped and according to the guy doing the work the tank in good working order.
Thanks for all help

 

[Twowaxhack]

Once the water leaves the tank it typically goes to a distribution box or header where the water is evenly distributed to your field lines.

Yours may not being distributed evenly.

That’s one possibility.