On May 17, 1:40*pm, Red Green wrote:
"Joe J" wrote :

Are there any reasons besides looks, to mow the grass growing on a mound
septic system?

It looks like ****? :-)

You want evaporation. Taller grass will shade the soil and reduce
evaporation to some extent. Can't quantify significance.

One would also think that grass growing two feet tall will take
up more moisture from the ground than grass that is mowed
to 3". But I think all that is a nit. The path of the septic leach
field should be down, not going up. So, I'd say letting the
grass grow doesn't make any difference to the septic
system.