Backflow Testing in Riverdale, MD

Signs it's time for a test or repair

• Sprinklers are coming back on for the season
• A WSSC letter about an assembly at your address arrived
• The device leaks from a relief port, test cock or cap
• Your home has a fire sprinkler system with a testable dual check
• A business near Riverdale Park Station or the Town Center MARC stop is opening or remodeling
• A previous test failed and was never retested

Riverdale conditions

Riverdale Park is an older streetcar-suburb town just south of College Park along US 1, and its median home was built in 1957. Houses of that age rarely had backflow devices originally, so a residential assembly here usually arrived with a later sprinkler system, boiler or fire sprinkler line. Newer development around Riverdale Park Station is more likely to have assemblies on service and fire lines.

WSSC's rules are specific about irrigation: the yearly test on a lawn assembly is reported at spring start-up. Homes built between 2007 and 2009 with testable dual checks on their fire sprinkler systems must test or replace them. WSSC handles plumbing permits through its ePermitting system, while building permits are a county matter; check with the Town of Riverdale Park about any local steps for a larger project.

WSSC's tap water analysis shows Potomac plant water averaging about 140 mg/L of hardness and Patuxent plant water about 64 mg/L. Scale can build on check seats over the years, which is one reason an older device that once passed starts to fail.

What affects cost

• Type of assembly and its size
• Whether it passes, needs a rebuild kit or must be replaced
• Where it sits: yard riser, basement, utility closet or meter pit
• Number of devices on the property
• Permit work through WSSC for a replacement

What happens when you call

You're connected with an independent local plumber who serves Riverdale. Mention the device, what it protects and any due date. The plumber tests it with a calibrated gauge, explains the result and arranges the filing with WSSC. If repairs are needed, you'll hear the options before work starts.