Backflow Testing in Oxon Hill, MD

Oxon Hill is on WSSC Water, and any testable backflow assembly WSSC has on record must be tested every year by a WSSC cross-connection technician, with the result filed electronically by a registered principal master plumber. Owners are responsible for keeping the device working. Call the number on this page to be connected with a local plumber in Oxon Hill.

What happens when you call

You reach an independent plumber who works in Oxon Hill. Tell them whether the property is a house, a townhouse, a garden apartment building or a business, what the assembly protects, and whether a notice has arrived. The plumber books a visit, finds the device, closes the downstream valve and runs the test with a gauge. A pass gets filed with WSSC. A fail gets a repair, usually new checks, springs or a relief valve, then a retest. If the body is cracked, the assembly is replaced under a WSSC permit and tested again.

Cost factors

Type and size of the assembly
Whether repair parts are needed
Number of devices, which can be several in an apartment complex or retail center
Replacement and permitting through WSSC
Access: buried vaults, utility closets and ceiling spaces take longer

Call now to be connected with a local plumber in Oxon Hill.

(202) 915-7612

Oxon Hill conditions

Oxon Hill is a close-in suburb along the Potomac with a mix of garden apartments, townhouses and single-family homes, and the median home was built around 1972. Single-family houses of that age rarely came with a testable device; when one exists, it was usually added later for irrigation, a boiler or a fire sprinkler system. Apartment communities in areas like Glassmanor and shopping centers such as Eastover and Rivertowne are more likely to have assemblies on the main service or fire line, and property managers often schedule them as a group.

WSSC is the inspection agency for plumbing and gasfitting work in Prince George's County, and permits go through WSSC ePermitting. WSSC itself does not test devices in the field. That's why the annual reminder asks you to hire a qualified technician rather than wait for the utility. A commercial or multifamily building with a testable assembly on its fire line follows the same yearly schedule as a backyard sprinkler device.

Before the plumber arrives

Find the assembly and clear a path to it
Locate the main shutoff and any irrigation valve
Keep the WSSC notice and account number nearby
Warn tenants or staff about a short water interruption
Pull out last year's report if you have one

Backflow Testing questions in Oxon Hill

Who is allowed to test my backflow assembly?

A WSSC cross-connection technician. WSSC accepts results only from qualified testers, and the filing must come from a registered principal master plumber.

What happens if my assembly fails the test?

It gets repaired, usually with new checks or a relief valve, and retested. A damaged body means a new assembly, installed under a WSSC permit and tested after installation.

Why is water dripping or spitting from my backflow device?

Discharge from an RPZ relief port means a check isn't sealing or the relief valve is worn. A constant flow should be looked at quickly; meanwhile, close the valve feeding the device if it floods the area.

Will I get a reminder when the test is due?

Yes, if WSSC has an assembly on record for your address, it sends a reminder that the yearly test is due.