In article ,
Mike wrote:
Last fall, I planted a Japanese Tree Lilac in my front lawn...it is
currently 7 feet high and is supposed to get between 15-25 feet. However
being a total newbie, I didn't consider where my sewer line is and I think I
may have planted the tree nearly on top of it.

You may have problems, or you may not. It depends:

How deep the sewer line is compared to how deep the tree roots usually
grow.

If the sewer line is the old style (creamic pipe with joints every few
feet) or the newer plastic with few joints.

If the former, do the joints leak? If 20-30 yrs old, probably yes.

Has the sewer line ever been replaced? If relatively recently, its
plastic. Are there any cleanouts in your lawn? If so, are they
plastic?

If you don't want to take chances, or you know the sewer line is old,
move the tree.

--
Rich Greenberg N6LRT Marietta, GA, USA richgr atsign panix.com + 1 770 321 6507
Eastern time zone. I speak for myself & my dogs only. VM'er since CP-67
Canines:Val, Red & Shasta (RIP),Red, husky Owner:Chinook-L
Atlanta Siberian Husky Rescue. www.panix.com/~richgr/ Asst Owner:Sibernet-L