If a pipe bursts or sewage backs up in a Riverdale home, close the main water valve first; if you smell gas, leave before making any call. Riverdale addresses, including the Town of Riverdale Park and nearby areas like Riverdale Heights, are served by WSSC Water for water and sewer. Call the number on this page to be connected with a local plumber in Riverdale.

When it's an emergency
- A pipe spraying or water running down through the ceiling
- Sewage backing into a basement drain, toilet or tub
- A water heater leaking from its tank
- Rusty water and a sudden pressure drop across the house
- A gas smell in the kitchen, basement or near the meter
Drips, a running toilet or one sluggish drain can wait for normal hours.
Riverdale's local conditions
The Riverdale mailing address covers the Town of Riverdale Park, renamed from Riverdale in 1998, plus unincorporated areas around it. It's an older streetcar-suburb area along US 1 just south of College Park, and the median home in Riverdale Park was built in 1957. Houses that age can have galvanized supply lines, cast iron drains and original valves, and those are the parts that tend to give out in a freeze or under a backup.
WSSC Water supplies water and sewer, disinfecting with chlorine. Its tap analysis reports hardness averaging about 140 mg/L from the Potomac plant and about 64 mg/L from the Patuxent plant, which can build up in older water heaters. WSSC's Emergency Service Center at 301-206-4002 takes street-side breaks and overflows. Part of the water service line is utility-owned and part belongs to the customer; if you plan to replace your portion, WSSC asks to be told.
The Town of Riverdale Park lists Washington Gas as its gas utility. For a gas smell, leave the area, move somewhere safe, call 911, then call Washington Gas at 844-WASHGAS (927-4427), option 1.
What affects the cost
- The hour. Night and weekend calls usually cost more.
- Old materials. Galvanized or cast iron next to a break is often in similar shape, so more pipe may need replacing.
- Access. Plaster walls and tight basements add time.
- Permits. Most plumbing projects, including service line repairs, need a WSSC Water permit and a plumber or gasfitter holding a WSSC license.
When you call
You'll be connected with an independent plumber who takes urgent work around Riverdale. Give your street address and a landmark such as Riverdale Park Station, the Riversdale mansion or East-West Highway, say whether the main is off, and describe what's happening. Ask about after-hours pricing. No arrival time is promised.
Emergency Plumber questions in Riverdale
I smell gas near the furnace or water heater. What do I do first?
Who pays to fix a leak between the street and my house?
The water heater tank is leaking. How urgent is that?
Does a night or weekend plumbing call cost more?
More plumbing services in Riverdale
Emergency Plumber nearby
Helpful guides
Sources
- WSSC Water Permit Services: information for homeowners
- WSSC Water: water quality and emergency contacts
- WSSC Water: What's Your Pipe Type? FAQ
- WSSC Water tap analysis report (Potomac and Patuxent plants)
- WSSC Water 2025 Water Quality Report (customer service and emergency lines)
- Washington Gas: natural gas safety
- Riverdale Park housing by year built (city-stats.com)
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