56 reviews
"Called at 9 PM with a burst supply line — they were at the house in Bethesda within 45 minutes, replaced the section in copper, and walked me through what failed. Honest pricing, no upsell."
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Potomac Fine Plumbing/ Bethesda, MD · Local Plumbing Directory
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Licensed, verified plumbing contractors serving Bethesda and surrounding Maryland neighborhoods. Built for homeowners, property managers, and operators who need a trustworthy local pro fast.
Local Overview
Plumbing in Bethesda
Bethesda's plumbing mix is dominated by mid-century single-family homes in neighborhoods like Edgemoor, Glen Echo Heights, and Wyngate, plus a rapidly expanding stock of luxury condos along Wisconsin Avenue and around the Purple Line corridor. The single-family sector is in a heavy renovation cycle, which means a lot of bathroom and kitchen rework, basement bathroom additions requiring upflush systems, and tankless water heater conversions where the original 40-gallon tank no longer fits the household's hot-water demand.
Climate & Water Notes
What to know locally
Montgomery County winters run a few degrees colder than DC, with more sustained subfreezing nights. Crawlspaces under postwar Bethesda homes are the #1 frozen-pipe location — uninsulated supply lines along the rim joist regularly burst during January cold snaps. WSSC water is moderately hard (7–10 grains depending on the supply zone), and most newer construction includes a softener loop at the water heater.
Featured Plumbers
Top-rated in Bethesda
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Bethesda Master Plumbers
High-End Residential · Fixtures
Location
Bethesda, MD
Rating
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Potomac Fine Plumbing
Estate · High-End
Location
Bethesda, MD
Rating
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Chevy Chase Plumbing
Residential · Renovation
Location
Bethesda, MD
Rating
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Montgomery County Plumbing
Residential · Commercial
Location
Bethesda, MD
Availability
24 HR EMERGENCY
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NIH Area Plumbers
Lab · Medical
Location
Bethesda, MD
Rating
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Downtown Bethesda Plumbing
Commercial · Restaurant
Location
Bethesda, MD
Availability
24 HR EMERGENCY
Service Area Map
Bethesda coverage area
Map data © OpenStreetMap contributors
Recent Reviews
What Bethesda customers say
287 reviews
"Replaced our 20-year-old water heater with a tankless. Pulled the permit, handled the gas line upsize, and the install was spotless. Best contractor we've worked with in Bethesda."
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Bethesda Master Plumbers142 reviews
"Hydro-jetted the main line after years of slow drains. They cameraed before and after, showed us the root intrusion, and didn't push a $15k liner like the previous company. Real professionals."
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Chevy Chase Plumbing198 reviews
"Diagnosed a slab leak in our Bethesda home that two other plumbers misdiagnosed. Saved us from tearing up the entire kitchen floor. Worth every penny."
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Montgomery County Plumbing89 reviews
"Did our entire bathroom rough-in for a remodel. On time, on budget, passed inspection first try. Clean work behind the wall, which is where it matters."
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NIH Area PlumbersNearby Neighborhoods
Service across Bethesda
Downtown BethesdaEdgemoorGlen Echo HeightsWyngateBattery ParkBradley HillsSumnerMassachusetts Avenue HeightsWestmoreland HillsSpringfieldBurning TreeGreenwich Forest
Frequently Asked
Bethesda plumbing FAQs
Who handles plumbing permits in Bethesda?+
Montgomery County's Department of Permitting Services (DPS) issues plumbing permits for unincorporated Bethesda. Work must be performed by a Maryland-licensed plumber, and inspections are scheduled directly with DPS.
Is WSSC water hard enough to need a softener?+
Most Bethesda zip codes test in the 7–10 grain range, which is at the threshold where a softener pays back through water heater longevity and reduced soap consumption. Test your specific tap water first — WSSC reports vary block to block.
How much does a basement bathroom addition cost in Bethesda?+
A new basement full bath averages $14,000–$28,000 depending on whether you can connect to existing drain stacks or need an upflush/ejector system. The upflush premium is typically $3,500–$5,500.
Are sump pumps required in Bethesda basements?+
Not required by code, but strongly recommended. Bethesda's clay soil and high water table mean that any finished basement without active sump protection is one storm away from a claim.