Backflow Testing That Keeps You

Compliant

ASSE-certified backflow prevention assembly testing for commercial, municipal, and multi-site properties across South Central PA. Veteran-owned. Friendly service. Clean documentation.

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ASSE-Certified Testing

Fast Scheduling

Clear, Audit-Ready Reports

10+ Years in Water & Wastewater

Veteran-Owned. Industry-Tested.

We’ve worked in the water and wastewater world for over a decade. Keystone Backflow brings that same precision and accountability to every test, every report, every site.

Who We Serve

Whether you manage one facility or fifty, we make testing predictable and documentation easy.

Property Managers & HOAs
Commercial Facilities
Municipal & Authority Accounts
Schools & Healthcare
Restaurants & Retail
Get on the schedule

Why Keystone Backflow

  • Veteran-owned service
  • 10+ years in water & wastewater
  • High-tech reporting
  • Reliable Scheduling
  • Friendly small-town approach

If it isn't documented correctly, it doesn't count

We deliver both the testing and the paperwork behind it.

We take backflow seriously. We don’t take ourselves too seriously.

Serving South Central Pennsylvania

  • Adams
  • York
  • Cumberland
  • Dauphin
  • Franklin
  • Lancaster
  • Lebanon
  • Perry

From Gettysburg to Harrisburg and everywhere in between.

Frequently Asked Questions

How often is backflow testing required?

Most assemblies require testing annually, but requirements can vary by system and authority.

We document results clearly and explain next steps so you can address repairs quickly.

Most tests are quick once we have access to the assembly. Multi-site scheduling available.

If applicable, we can discuss your setup and confirm whether testing is needed.

Safe access to the assembly and any relevant site contact details.

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