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Sump pump replacement in Nokesville: $697 installed in your existing pit. A new pit, a battery backup, outside drain work or new wiring is extra.
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Two of our technicians in a basement mechanical room, beside the furnace and a gas water heater.
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 price as our sump pump replacement page: one flat number for a new pump in a pit that’s still sound, with what costs extra named right beside it.
Sump pump replacement, installed in your existing pit
$697
Sump pump and battery backup, installed together
$3,200
or $53/mo at 0% APR for 60 months
A new or deeper pit, discharge line work outside, or a dedicated circuit
Priced in writing before we start
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
$697 covers a new cast iron pump, a quiet check valve, new PVC up to your existing discharge line, a battery water alarm by the pit, the old pump hauled away and a bucket test before we leave.
A battery backup keeps pumping through a power outage, and the outage usually comes with the storm. With a new pump, the pair is $3,200 installed. The sump pump estimator helps you decide whether you need one.
What’s different in Nokesville
The Census counts how old Nokesville houses are, not what’s under them, so nobody can honestly say how many have a basement. Across 20181 the median owner home dates from 1989 and about a quarter went up in the 2000s; where one of those has a pit, the pump in it is probably not the first. In the village, where close to four in ten homes predate 1960, an old farmhouse may sit on a stone cellar or a crawlspace, with any pit added long after.
Where there is a pit, the ground keeps it busy. On Prince William County’s soil map, about two thirds of the Census’s Nokesville place, the village and the fields around it, is Category III, the County’s problem soils, and nearly all the rest Category II, the class for groundwater that rises with the seasons or perches on a tight layer, and for shallow rock. Under one percent is Category I, ground the County rates good for foundations.
Two names cover a quarter of that map between them, Albano and Waxpool silt loam, and the USDA’s soil descriptions call both poorly drained, with slow or very slow permeability. Count the soils those descriptions give a seasonal perched water table too, and it’s about half the place. After a wet week that water lingers against the foundation, and the footing drain delivers it to the pit.
Where the pump empties matters. On Prince William Water’s sewer, the utility lists sump pumps among the inappropriate connections behind sewer overflows, and on a grinder pump, groundwater is just more work for the grinder. On a septic lot, a sump piped into a house drain sends that water through the tank to a drainfield built for the household’s wastewater. Either way the line belongs outside, downhill from the house and clear of the drainfield and the wellhead.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
ZIP 20181 as a whole: every Nokesville address, the village included.
The Census Bureau’s Nokesville place: the village and the land right around it.
When it’s time
If the pump cycles in August after weeks without rain, something besides groundwater is filling the pit. On a well, check the softener: Virginia Tech’s clinics found high sodium, most likely from softeners, in 40 percent of Prince William well samples, and a softener’s drain line sometimes ends at the sump. Every recharge then runs the pump.
Zoeller, who make a lot of the pumps around here, puts a sump pump’s life at seven to ten years. Past seven, replace it on your schedule instead of the storm’s.
Water is running back into the pit through a check valve that no longer closes, so the pump moves the same water again and again until it wears out.
After a heavy rain
Six checks you can make yourself once the rain lets up, none of them with your hands in the pit. Then call us and we’ll check it all.
Watch the pit during the rain or right after. The pump should start as the water rises, empty the pit and shut off. A full pit, or a pump that hums and moves nothing, isn’t keeping up.
Walk the basement: the corners, the walls, the floor by the pit, under the water heater and the furnace. Photograph any wet spot before you mop, so we can see where it came in.
Outside, find where the pump’s pipe ends. It should be open, not crushed, buried or full of leaves, and aimed away from the house so the water doesn’t run back to the foundation.
Listen when the pump shuts off. Water rushing back into the pit means the check valve isn’t closing, and the pump has to move that water again.
The pump stops when the power does, often at the height of the storm. If the basement took water during an outage, that’s the job a battery backup does.
If water is standing near the pit, an outlet or anything plugged in, don’t wade in to check. Call us, and only switch the power off at the panel from somewhere dry.
Not sure what you saw? Call us after a storm and we’ll check it all: the pump, the float, the check valve, the discharge line and where the water came in. If the pump can’t keep up, a new one is $697 installed in your existing pit; a new or deeper pit, a battery backup, discharge line work outside and a dedicated circuit are extra, priced in writing before we start.
Choosing who replaces it
Questions to ask anybody who quotes you, us included.
Out here the backup question comes with the pump. Get both numbers in writing, the pump alone and the pump with a battery backup, before the old pump comes out.
Ask what the number covers: the pump, the check valve, the pipe, hauling the old one off, a test before they leave. Then ask what costs extra, and get it in writing.
Cast iron, ideally. Plastic pumps cost less and are usually the ones that quit early. Ask before the old one comes out.
A discharge line that’s cracked, buried or frozen shut every January leaves the new pump pushing against a closed pipe. Whoever replaces it should check the outside end too.
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.
Replaced 2 sump pumps. Very professional, proficient, and courteous.
Questions
A battery backup. The other common kind runs on city water pressure, and on a well that pressure comes from an electric pump, so it quits in the same outage as the sump pump. A battery unit sits beside the main pump and takes over when the power drops. Paired with a new pump, it’s $3,200 for both, installed.
Maybe not, if the generator feeds the sump pump’s circuit and starts on its own, the way a standby unit with a transfer switch does. A portable one needs someone home. A battery backup takes over by itself, which counts most when nobody’s home.
When Reid Lane floods, assume the pit is working hard too. NOAA’s Storm Events Database records Reid Lane flooding on six different days from 2012 through 2022, closed on five of them, and Aden Road under water at Slate Run near Parkgate Drive in June 2018. On ground that already holds water, rain like that fills a pit fast. Once it eases, make sure the pump started, emptied the pit and shut off; that no water crept in along the walls; and that the line outside is open and still running downhill. Then call us, and we’ll test the pump, the float, the check valve and the discharge. If it can’t keep up, a new pump in the same pit is $697 installed, and anything extra is priced in writing first.
$697 installed in your existing pit: a new cast iron pump, a quiet check valve, new PVC to your discharge line, a battery water alarm, the old pump hauled away and a bucket test. A new or deeper pit, discharge line work outside, a battery backup and a dedicated circuit are extra, priced in writing before we start. A new pump and a battery backup installed together are $3,200.
Yes. Pour five gallons of water into the pit. The float should rise, the pump should start within a few seconds, and it should shut off clean once the water’s down. If you hear water rushing back into the pit after it stops, that’s the check valve.
Ready when you are
Call, or send the form at the top. Often same-day, and we will tell you honestly when we can get there.
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 Nokesville 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.