Open 24/7 for emergencies
Drain cleaning for one fixture is $200 to $800 and toilet repair is $250 to $900, from our published price list.
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Plumbing in Catharpin, ZIP 20143: leaks, drains, toilets and water heaters, with the price named before work begins.
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
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 Catharpin
The median owner home dates to 1986. About one in five were built before 1960, another one in five from 1980 through 1999, and a bit under four in ten from 2000 on. Each stretch leaves its own supply pipe. Older houses can still carry galvanized steel, some from the 1980s and 90s got polybutylene, a grey plastic that fails at its joints, and newer ones run plastic or copper. The decade tells a plumber where to look first.
Dulles logs 101.7 days a year with lows at or below freezing, and the first fall freeze arrives around October 24. Pipes in an outside wall, a crawlspace or a garage are the ones that burst, and the late January 2026 Arctic outbreak, with Extreme Cold Warnings on three nights, was a long test of them. Find your main shutoff before a freeze, not during one.
If you’re on Prince William Water, its 2025 entry-point tests ran 44 to 180 mg/L, about 2.6 to 10.5 grains per gallon, which it rates moderately hard. The utility also says the pressure reducing valve is the homeowner’s to install and keep up, and the plumbing code recommends one where pressure runs 80 psi or more. A new valve runs $500 to $1,000. On a private well, hardness varies from well to well, and only a test tells you.
Rain does its own plumbing damage. On September 30, 2010 a flash flood closed Gum Springs Road after 6.80 inches fell nearby, and Little Bull Run’s floods in December 2023 and July 2025 covered Artemus Road. Floor drains and washing machine standpipes show it first. Drain cleaning at one fixture runs $200 to $800, toilet repair $250 to $900, and locating a leak inside a wall $200 to $500.
What you’d notice
Turn off each tap and appliance. On the utility, check whether the meter dial still creeps. On a well, check whether the pressure tank keeps kicking on. Either one means water is leaking somewhere between the source and the fixtures, often inside a wall or under the slab.
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.
One slow sink is a sink. Two slow drains on different floors are sharing the pipe out to the street, and a basement drain that gurgles while you run water upstairs is the main line talking.
Lukewarm showers, hot water that runs out halfway, banging or rumbling from the tank. Rumbling is sediment, and it’s the noise a water heater makes in its last couple of years.
After a heavy rain
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.
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.
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.
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.
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
Prince William Water requires its own Lateral Repair or Replacement Permit, and its inspection, before anyone repairs or replaces a sewer lateral outside the house. Source.
Prince William Water says the pressure reducing valve is the homeowner’s to install and keep up, that the plumbing code recommends one where pressure runs 80 psi or more, and that pressure rises with the height difference between your house and the water tank serving it. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing a plumber
Questions worth asking anybody who comes out, us included.
Ask the plumber to find the main shutoff and, if you’re on Prince William Water, put a gauge on an outdoor faucet and tell you the reading. At 80 psi or more, the code recommends a pressure reducing valve. A quote for a repipe written without those checks is a guess.
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.
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.
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
5.0 stars across 1,132 reviews. Read them on our reviews page.
Fast service and very knowledgable. The technician helped me with both a garbage disposal and water softer issue. He was friendly and easy to talk to about future needs.
Where we work
Next door to Catharpin: Gainesville, Haymarket, Centreville, Chantilly and Bristow.
Questions
Nothing we have for 20143 says which houses use the utility and which have wells, so check your own paperwork. A bill from Prince William Water means its pressure advice and hardness figures apply to you. A pressure tank in the basement or a well cap in the yard means hardness and pressure are yours to test.
Installing a new tank water heater runs $2,757 to $7,494, and installing a new tankless water heater runs $8,886 to $10,486. Gas and propane replacements go through a Prince William County permit even when the new tank matches the old one, while a matching electric tank in the same spot needs none. The water heater estimator gives your house its own number.
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
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 Catharpin 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.