Every drain in the house backs up at once
On FCWSA sewer a blocked main is the Authority’s; on septic, a full tank or drainfield is a septic contractor’s. If neither, the clog is in the drain line leaving the house, and that one’s ours.
Marshall, Virginia
A plumber in Marshall.
Drain cleaning for one fixture is $200 to $800 and toilet repair is $250 to $900, from our published price list.
Get your price in writing
Send this and the office calls or texts you back to set a time.
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Rather talk now? (703) 997-9757
Plumbers for Marshall, 20115: leaks, clogged drains, water heaters and sewer backups, on FCWSA water and sewer or a well and septic, priced before we start.
- Prices in writing, first
- Camera before any dig
- Dedicated plumbing team
5.0 stars across 1,132 reviews
Part of our plumbing team, with the drain machine, the sewer camera and the jetter they bring to the house.
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceOften same-day, and we will tell you honestly when we can get there.
Our own plumbers, our own trucksNobody here is a subcontractor with a magnet on the door
The price is settled before the workYou see the number in writing before anything is taken apart
What it costs
What a plumber costs in Marshall.
The same list as our plumbing page, every line a range because the house decides where it lands. You get the number before the work starts.
Drain cleaning, one fixture
$200 to $800
Main sewer line cleaning
$550 to $1,650
Sewer camera inspection, added to a visit
$89
Leak detection
$200 to $500
Toilet repair
$250 to $900
Pressure reducing valve replacement
$500 to $1,000
Water heater replacement
$2,757 to $10,486
or $46/mo at 0% APR for 60 months
Monthly figures: 60mo @ 0% APR on each starting price, the whole price financed, on approved credit. Longer plans lower the payment and cost more in total. The lender sets the final terms. How financing works
A sewer camera inspection is $89 added to a visit we’re already making. It’s the cheapest way to know what a drain is doing before anybody talks about digging.
With Comfort+ membership, any service is 15% off, and a water heater flush with a sewer camera inspection and a plumbing safety inspection comes every year.
What’s different in Marshall
FCWSA’s pipes end at the meter box and property line; past the service district, the well and septic are yours.
Marshall plumbing comes in two kinds. Inside the service district, most homes get their water from FCWSA’s wells and send sewage to its plant south of I-66, which also serves The Plains. Outside it, houses run on a private well and a septic system, both permitted by the Fauquier County Health Department. We work on the plumbing inside the house; the well, its pump, the septic tank and the drainfield go to well and septic contractors.
On FCWSA sewer, who pays for a clog depends on where it is. The Authority clears its own mains, whatever caused the stoppage. The service line out to your property line and the building lateral from there to the house are yours, though FCWSA fixes a service line problem under the public street. When sewage backs up, phone FCWSA before anyone else; if its crew finds the main clear, it’s a plumber’s job. Our sewer camera, $89 added to a visit, finds where it’s stuck, and clearing the main sewer line is $550 to $1,650.
On the water side, FCWSA owns the line through the meter box and everything past it is yours. Above 80 psi it tells customers to fit a pressure regulating valve; replacing one is $500 to $1,000. State rules also make FCWSA keep a cross-connection control program: required backflow devices get tested every year by a certified tester. A garden hose is the most common cross-connection at home, so every outside spigot wants a vacuum breaker.
On a well, chemistry wears the pipe. Virginia Cooperative Extension’s Fauquier clinics found about half their well samples below pH 6.5, acidic enough to pull copper out of pipe and brass fittings, and it shows as blue-green stains and pinhole leaks. The County’s plan also maps soils in Marshall with a seasonal high water table 10 to 40 inches down, so a basement here may lean on a sump pump. After a downpour like the one in August 2015, when flash flooding closed Whiting Road north of the village, check that the pump ran and that nothing came up through the floor drain.
By the numbers
Marshall houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
Marshall
ZIP 20115 as a whole: every Marshall address, the village included. The Census place for the village alone has too few homes for steady figures.
- Median home built1986 Census
- Built before 1980about 4 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aresingle-family houses, about 8 in 10 Census
- Heated withelectricity, about 6 in 10 Census
- Rentedabout 3 in 10 Census
- Houses from before 1960 were plumbed in galvanized steel, which narrows with rust from the inside until the pressure goes.
- A lot of houses here went up while polybutylene supply pipe was in use, about 1978 to 1995, and it fails at the fittings.
What you’d notice
What a plumbing problem in Marshall usually looks like.
Pressure that drops a little every year
Galvanized steel supply pipe rusts from the inside, so the pressure falls slowly until a shower upstairs is a trickle. The fix is new pipe, not a new faucet.
Grey plastic pipe near the water heater
Polybutylene, often stamped PB, went into houses from about 1978 to 1995. It tends to let go at the fittings with no warning, so it’s worth knowing whether you have it.
Water where it shouldn’t be
A damp patch on a ceiling, a warm spot on the floor, a meter that keeps ticking with every tap off. A slow leak inside a wall does most of its damage before it ever shows itself.
After a heavy rain
After a storm in Marshall, check the basement drains.
Heavy rain finds the weak spots in a house’s plumbing. Four checks you can make yourself, then call us and we’ll look at the rest.
- 1
Water coming up a floor drain?
Clear water with no smell is usually groundwater. Gray water, or a sewer smell, means the main line is backing up: stop running water in the house and call us.
- 2
Drains slow or gurgling since the rain?
A main line with a cracked joint or roots in it can take in groundwater during a storm and slow down. A sewer camera inspection, $89 added to a visit, shows where.
- 3
Is the sump pump running?
If the house has one, watch it once: it should start as the pit fills, empty it and shut off. Our sump pump replacement page has the rest of the checks.
- 4
Did water reach the water heater?
If floodwater got to a gas water heater’s burner or controls, leave it off. Don’t relight it until a plumber has checked it.
Call us after a storm and we’ll check it all: the floor drains, the main line, the sump pump and the water heater. Any repair gets its price in writing before the work starts.
Your pipes, your paperwork
Who owns what under the street in Marshall.
Fauquier County
On FCWSA water (Bealeton, Catlett, Marshall, New Baltimore, Vint Hill and its other systems), FCWSA says it can’t guarantee uniform pressure, and that over 80 psi the customer should install a pressure regulating valve at their own expense. Homes on private wells aren’t covered by this. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing a plumber
How to pick the best plumber in Marshall.
Questions worth asking anybody who comes out, us included.
Will they tell you whether it’s the main, the lateral or the house?
On FCWSA sewer the answer settles who pays. A plumber should run a camera down the line before quoting a dig, and say plainly when the blockage is the Authority’s.
Is the plumber licensed in Virginia?
Anyone can check on the state’s license lookup in about a minute. It’s the one question that takes the guesswork out of the rest.
Will they put a camera in before they talk about digging?
A sewer camera inspection is cheap next to any dig, and it shows whether the problem is a root, a sag or a break. A quote to dig without one is a guess.
Do you get the price before the work?
Every plumbing job on our list has a range. A plumber who won’t say where yours lands until the wall’s open is asking for a blank check.
Two of our crew going over a work order before the day's calls.
From our Google reviews
What our customers say.
5.0 stars across 1,132 reviews. Read them on our reviews page.
Zabi did a great job. Fill valve, flush valve and gaskets replaced on this 30-yr-old toilet. No leaks, no run-on.
Where we work
Plumbing in every Northern Virginia town we serve
Next door to Marshall: Rectortown, Delaplane, The Plains, Orlean and Broad Run.
Fairfax County
Arlington County
Loudoun County
Prince William County
Fauquier County
Stafford County
Questions
Plumbing questions from Marshall.
Is my Marshall house on FCWSA sewer or a septic tank?
Your FCWSA bill says. A sewer charge on it means the house drains to the Authority’s plant. No sewer charge, or no FCWSA bill at all, means a septic system, permitted by the Fauquier County Health Department.
Does FCWSA’s main flushing affect my plumbing?
Yes, while it runs. Marshall’s 2026 dates are March 16 to 19 and September 21 to 24; expect low pressure, air and discolored water, and FCWSA asks customers to skip laundry and bathing until it clears. If a faucet aerator clogs afterward, cleaning its screen usually fixes it.
How much does a plumber cost in Marshall?
It depends on the job, and every one has a published range: drain cleaning for one fixture $200 to $800, main sewer line cleaning $550 to $1,650, leak detection $200 to $500, a pressure reducing valve replacement $500 to $1,000, toilet repair $250 to $900. A sewer camera inspection added to a visit is $89.
Ready when you are
Tell us what the water is doing.
Call, or send the form at the top. You get the price before the work, and if it can wait, we’ll tell you that too.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Marshall and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,132 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.