You may find this useful:
(Attorney is in Beverly Hills)
https://aoausa.com/how-to-prevent-a-prescriptive-easement-on-your-property/
Our utility was constantly removing encroachments. In California you cannot prescript an easement on a public entity. I have seen some real doozies. Like the jackass that constructed a garage over a 48 inch gravity collector (it happens). His homeowners insurance was not too happy about that one.
I also had a damn operations manager that bootlegged an 8-inch line across private property that was discovered 10 years after it was put in when the property was developed. We moved the line because our board had the political connections to the developer. Not to mention the Ops sup did it with the wrong color of money. He was eventually "retired".