A plumber in Chantilly.
Plumbers for Chantilly, 20151 and 20152, from our shop on Lafayette Center Drive: leaks, drains, sewer lines and water heaters.
- Prices in writing, first
- Camera before any dig
- Dedicated plumbing team
Get your plumbing job priced
Two water companies behind one Chantilly address.
Most of 20151 went up in the 1980s and early 90s, the years grey polybutylene supply pipe was going into houses, so it’s worth knowing what yours is made of. 20152, the South Riding side, is 2000s construction: copper or PEX supply and PVC drains, with a lot of the original water heaters now at the age tanks give out.
20151 drinks Fairfax Water. 20152 is on Loudoun Water, which publishes no current hardness figure and points its customers to Fairfax Water’s, 3 to 10.8 grains per gallon in 2025 depending on the plant and the month. That’s hard enough to leave scale in a water heater, and water heaters are a bigger share of our Chantilly work than in most towns.
What’s in the walls across Chantilly.
Census figures for the owner-occupied homes in each place, and the pipe that usually goes with houses that age.
| Place | Median home built | Most homes are | Heated with | The pipe you usually find |
|---|---|---|---|---|
| South Riding | 2006 | single-family houses, about 5 in 10 | gas, about 8 in 10 | Copper or PEX supply, PVC drains, original water heaters aging out. |
| Chantilly | 1987 | single-family houses, about 6 in 10 | gas, about 5 in 10 | The polybutylene years: check the supply pipe; PVC drains. |
Chantilly houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
20151, the Fairfax County side
- Median home built1987 Census
- Built before 1980about 2 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aresingle-family houses, about 6 in 10 Census
- Heated withgas, about 5 in 10 Census
- Rentedabout 2 in 10 Census
- A lot of houses here went up while polybutylene supply pipe was in use, about 1978 to 1995, and it fails at the fittings.
20152, the South Riding side
- Median home built2006 Census
- Built before 1980hardly any Census
- Built since 2000about 8 in 10 Census
- Most homes aresingle-family houses, about 5 in 10 Census
- Heated withgas, about 8 in 10 Census
- Rentedabout 2 in 10 Census
- Newer houses run copper or PEX with PVC drains, and their original water heaters are reaching the age tanks give out.
- Townhouses share walls, so a leak can start on either side of one; the meter test tells you whether it’s yours.
What a plumber costs in Chantilly.
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.
- One fixture cleared$200 to $800
- Main line cleared$850 to $1,650
- Camera down the main$89
- Leak located$200 to $500
- Toilet repaired$250 to $900
- Pressure reducing valve$500 to $1,000
- Water heater installed$2,757 to $10,486
A camera down the main line 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.
On the Family Care Plan, repairs are 15 percent off, and a whole-home plumbing inspection comes every year.
What a plumbing problem in Chantilly usually looks like.
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.
A drain that keeps coming back
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.
No hot water, or not enough of it
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.
Who owns what under the street in Chantilly.
Fairfax County
In Fairfax County the homeowner owns the whole sewer lateral, from the house to the county main, including the stretch under the street. Replacing it takes a county plumbing permit, plus a VDOT permit under a state road. Source.
Fairfax Water promises 20 psi at the main and no uniform pressure, and the pressure reducing valve on your side of the meter is yours to buy and keep up. Over 80 psi, the Virginia Residential Code calls for one, and an expansion tank with it. Source.
How to pick the best plumber in Chantilly.
Questions worth asking anybody who comes out, us included.
Do they know about the Loudoun Water inspection?
In 20152 a sewer line replacement has to be inspected by Loudoun Water before the trench is filled. A plumber who works on that side books it without being reminded.
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 camera down the main line 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.
What our customers say.
Arrived within an hour on a Sunday morning and provided great service.
New tenants in the rental property had a problem with their drain. Property manager sent their plumber said they snakeed the drain and could not solve the clog. Wanted $800 to snake the drain through the roof vent. Called Swift Pro and James Milligan solve the problem in 15 minutes saving me hundreds of dollars.
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.
5.0 stars across 884 Google reviews. Read them on our reviews page.
Plumbing questions from Chantilly.
Is my water hard in Chantilly?
Moderately hard to hard on both sides. Fairfax Water’s 2025 figures ran 3 to 10.8 grains per gallon, and Loudoun Water points its customers to those same numbers. That’s enough to put scale in a water heater, which is what the yearly flush is for.
Do you replace water heaters in South Riding?
Yes, and a lot of the 2000s originals are due. A tank runs $2,757 to $7,494 installed and tankless $8,886 to $10,486, with the permit, the expansion tank, the pan and the haul-away in the number. The water heater estimator gives your exact price in about a minute.
How much does a plumber cost in Chantilly?
It depends on the job, and every one has a published range: one fixture drain cleared $200 to $800, the main line cleared $850 to $1,650, a hidden leak located $200 to $500, a pressure reducing valve $500 to $1,000, a toilet repaired $250 to $900. A camera added to a visit is $89.
Plumbers in the towns next door.
More from SwiftPro in Chantilly
Tell us what the water is doing.
Call, or book online and pick a window. You get the price before the work, and if it can wait, we’ll tell you that too.
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Chantilly and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.