K.G. Johnson, Inc
Backflow testing. 4520 Mack Ave, Frederick, MD 21703
Approvals
Where you will find K.G. Johnson, Inc
These are the city pages close enough for this business to appear on.
- Gaithersburg, MD(19 mi)
- Rockville, MD(25 mi)
- Silver Spring, MD(32 mi)
- Beltsville, MD(36 mi)
- Washington, DC(38 mi)
- Hyattsville, MD(41 mi)
- Alexandria, VA(42 mi)
- Upper Marlboro, MD(50 mi)
Other backflow testers nearby
| Business | Services | Distance |
|---|---|---|
| Premier Fire Protection Services, LLC | Backflow Testing | 10 mi |
| O'Conor Plumbing Services, LLC | Backflow Testing | 15 mi |
| Delmar Plumbing, LLC | Backflow Testing | 16 mi |
| Master Plumbing & Mechanical | Backflow Testing | 19 mi |
| Mallick Plumbing & Heating, Inc | Backflow Testing | 19 mi |
| Harvey W. Hottel | Backflow Testing | 20 mi |
Questions about K.G. Johnson, Inc
Is K.G. Johnson, Inc approved to test backflow assemblies?
K.G. Johnson, Inc is on the DC Water list, as of September 29, 2026. That means the utility lets the company file backflow test reports in its system; it is not a state license. Ask for the tester's certificate number before the test.
What does K.G. Johnson, Inc do?
Their listing covers backflow testing. Call to confirm the service you need, because offerings change.
What areas does K.G. Johnson, Inc serve?
They are based in Frederick, Maryland, within driving distance of Gaithersburg, Rockville, Silver Spring, Beltsville, Washington. Service areas are set by the business, so confirm yours when you call.
How do I reach K.G. Johnson, Inc?
Call (301) 698-9805. Their website is linked on this page.
Is this your business?
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