we did contact you dept. many years ago and your people did come twice in different years to trim the trees and set border line so your mower guy knew where the border line is. but your mower guys  are frequently changed and assumed the big stone  as border (photos: ball not stone as the border, trees and stone) 

this is why caused the problems.

the photos i attached ' ball not stone as the border' to show the border line is where the ball is, not the stone.

and ' trees and stone' showing the trees nearby stone didn't exist when we moved in, we did tell mower guys they won't cut off.

other photos showing you overgrowed blockaded the road and wood walls already disappeared.

i would suggest you come to see in person, and if you tell us when (not Wensday,Thursday) we would come to meet you.

ps our renter moved out still doing clean and would paint the walls, we live in other city it takes 50 minutes to arrive our renting house.

(our names and ph#, address and house PIN number)

PS it is 203 elementary schools district. our neighbours made complaints.

PS 9/28/2021quite satisfied got water company reponsed as:

Thank you for bringing this to my attention. We will be more than willing to trim up whatever trees you’re referring to if they're on our property. I'm going to get my survey crew out there to mark the lot lines. After the property lines are staked and marked we can meet on site to look at which trees you're referring to and we'll get them trimmed.

And my response: we will be there, but not available on Wensday and Thursday.
Very appreciated.

--the question is after trim this time, will their mower guys won't forget again? last time the border marked on paved walking way and very easily disappeared.wild weeds grew a trees-like if mower guy didn't cut right away....

ps 9/29/2021 property lines marked, we visited to see and confused. because when spouse bought the house in 1996 did hire residential surveying service which showing 5 points, 4 points related to water company. and should straight line bewteen points.the #5 road side to #4 accordring to water company became #5, #4.5 #4 are not straight line. so i emailed as :

we can come to meet you and discuss whether your company better re-install woods wall (we are not professional only worry whether our dirts washed out would cause the  damage to our fundation),  cut off all border trees so no need to trim trees in future or other solution....

when we moved here in 1996 border trees already there while some wood walls rotten and chipmonks digged at least 5 holes between the woods due to rotten.

we can come Friday(10/1/2021), and just  let us know when you arrive.

10/1/2021 i point the problem to water company and showed him the  residential surveying service did map. He insist their survey using GPS can't be wrong. due to lots weeds tree blockade the view so i told him can't tell right now. but we both remove all border trees(the reason is one of water company guys called me and declared this year can't trim trees and we are the only house next to water station, certainly i am afraid no trees trim any more in the future). i also point our big tree in front the branch went to their side also need trim, and the wild trees in their lands must cut off which didn't exist in 1996. He told me about a week would clean out the mess.

10/2-10/3 we cut off the border weeds tree especially those wrong border marks area(afraid their people refuse to cut off). And the community bushes pick up bundle bushed from May to Nov(Oct?) on the 1st week monday each month. so 10/1 picked up what i made 5 bunches(belong to our lands). estimate 2 more days could clear up border lines which could see more clearly the wrong border marks.

PS  we received water company upset email On Friday, October 8, 2021, 10:31:34 AM as :
The trees and the property line were cleaned up today. However I’m NOT very happy with what you had done and feel like my willingness to help was taken advantage of. The trees on your property were cut down and thrown onto our property. That is not what we discussed and what I agreed to with you the day we met out there. I agreed to take the branches you said came from our tree that were already cut up and laying on the ground. Today there were a ton of branches that were cut down off of your property and thrown onto ours. I had my crew remove them but I also contacted the Sheriff and our Building Dept. to document this illegal dumping onto our property. Please don’t do that again or there will be legal ramifications. Thank you and have a good weekend.

And my response as:
Sorry it irritate you. but think about that we moved in 1996 till 2020 your people only came twice. in fact i left 2 long cut stems that someone in the neighbourhood dump in our yard due to upset can't go thru and ugly looking. when we met together(9/30) i also told you the cut trees big root also not belonged to us.
Last time we did report about some one dump stems in our yard to the previous club house manager, we were told who was the suspect.
i did cut most border tress including your side because the 2nd time your people came i requested them to cut off the border trees they refused except trim the 3 tall pine trees. so this time i cut off as much as i can and your people can see clearly the border line should be.
before i rented the house we did jobs for you. i even put a chicken wire to protect from wild weeds.
we lower down the renting fee that renters promised to trim your side too. obviously the last one just moved out didn't do well (5 years).
this is why when we met i  requested you cut off all border trees so your people in the future no need to trim.
if it is ok, could you promise every year your people would come to clean wild weeds?
i just find out that can get free mulch, however they would put on our drive way and need to move nearby border so can protect from dirt wash away.
you did tell me it's not your company duty to re-covery wood walls, but i can tell you it is your company did because our lands higer than yours, it's you company digged out (made it flat) and put wood walls.
quite earlier we also report the wood walls rotten to dupage county (county farm road), they didn't but came 1st time.

PS water company response : We’ve already gone above and beyond our responsibility there as far as I’m concerned. We will clean the area at least once a year form now on. As far as the wood wall that is NOT on our property which I have no record of us installing. We legally can’t do work on private property so I wouldn’t see us installing something like that on private property. So I can’t help you with the wood wall. Thank you. 

-- i'm going to verify what they did tomorrow, there is 2 huge trees on border and one our big tree branch went to their land i can't do it. the rest of border trees i cut off.

then the final answear would be:

thanks that would help a lot.