Where We Work
Find Your Service Area
Keystone PHS is fully active across four South-Central Pennsylvania counties — 55 towns and counting. Pick your county below, or jump straight to your town.
Licensed & Insured — PA #T001718
No After-Hours Fees — Ever
Same-Day Service Available
100% Upfront Pricing
Browse by County
Four Counties, One Team
Each county page covers local water conditions, housing history, and links to every town we serve within it.
17 Towns
Franklin County
Our home base — Chambersburg to the South Mountain border communities.
View County
11 Towns
Cumberland County
From the county seat in Carlisle to the Harrisburg riverfront boroughs.
View County
13 Towns
Adams County
Historic Gettysburg and the county's orchard-belt boroughs.
View County
14 Towns
York County
The historic city of York to the southern Mason-Dixon border towns.
View County
Full Directory
Every Town, A to Z
Don't see your exact town listed? Call us — we likely still cover your address even if it's not below.
Franklin County
Cumberland County
Adams County
Don't See Your Town?
We're always expanding. Call us and we'll confirm whether we cover your address.