Delong Plumbing
Backflow testing. 540 Tanview Dr, Oxford, MI 48371
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Price reports
What a backflow test costs in Oxford
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Published prices nationwide
$29.99 to $100 per assembly
Every published price, with its source: what a backflow test costs.
Failed test? Published repair, rebuild and replacement prices: what a backflow repair or replacement costs.
What Delong Plumbing's website says
Services listed on Delong Plumbing's website, read October 11, 2026: backflow testing, general plumbing and water heaters. delongplumbingmi.com/locations/plumbers-oxford
| It says | Details | Page |
|---|---|---|
| Service area | Oakland County; Lake Orion | delongplumbingmi.com/locations |
| Emergency service | Offered, it says (hours not stated) | delongplumbingmi.com/plumbing-services |
| Licences, certifications, memberships | ASSE backflow tester certification and Licensed plumbers | delongplumbingmi.com/about-us |
Read on delongplumbingmi.com on October 11, 2026 (5 pages). This is what the business says about itself; we have not checked the credentials it names with the issuing body.
Where you will find Delong Plumbing
These are the city pages close enough for this business to appear on.
- Oxford, MI(under 1 mi)
- Rochester Hills, MI(13 mi)
- Troy, MI(20 mi)
- Farmington Hills, MI(24 mi)
- Ferndale, MI(26 mi)
- Livonia, MI(31 mi)
- Ann Arbor, MI(46 mi)
Other backflow testers nearby
| Business | Services | Distance |
|---|---|---|
| NES Plumbing | Backflow Testing | 1 mi |
| All Building Services LLC | Backflow Testing | 1 mi |
| Express Plumbing, Heating & Mechanical | Backflow Testing | 3 mi |
| Lee Industrial Contracting | Backflow Testing | 11 mi |
| Evelux Plumbing | Backflow Testing | 13 mi |
| Putman & Sons Plumbing | Backflow Testing | 13 mi |
Questions about Delong Plumbing
Is Delong Plumbing approved to test backflow assemblies?
Delong Plumbing is on the Oakland County WRC list, as of April 30, 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 Delong Plumbing do?
Their listing covers backflow testing. Call to confirm the service you need, because offerings change.
What areas does Delong Plumbing serve?
They are based in Oxford, Michigan, within driving distance of Oxford, Rochester Hills, Troy, Farmington Hills, Ferndale. Its website names Oakland County and Lake Orion as areas it serves (read October 11, 2026).
How do I reach Delong Plumbing?
Call (248) 693-5890. Their website is linked on this page.
Compiled from public records and public business information. Not an endorsement. Check licensing before you hire.
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