Open 24/7 for emergencies
A new well pump on your existing pipe and wire runs $2,781 to $4,000 installed.
Price range
$2,781-$4,000
8yrs @ 7.99%
$39/mo
15yrs @ 9.99%
$30/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
Get your price in writing
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Well pump repair in Gainesville, 20155, for houses out past the subdivisions: we test the pump, its wire, the switch and the tank, then fix what failed. The $49 plumbing visit that tests it first is waived when you go ahead with the repair.
5.0 stars across 1,132 reviews
Two of our plumbers in a Northern Virginia mechanical room, where a well’s pressure tank usually lives.
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 span of what we’ve quoted and sold for well work in 2026. Depth, wire and what’s worn out set where yours lands, in writing before anything comes out of the well.
Pressure switch replacement
$450 to $609
Pressure tank replacement
$2,200 to $2,950
or $37/mo at 0% APR for 60 months
Well pump replacement
$2,781 to $4,000
or $46/mo at 0% APR for 60 months
Well pump, new wire and drop pipe
$4,900 to $6,500
or $82/mo at 0% APR for 60 months
Well pump, pressure tank and switch
$6,200 to $8,000
or $103/mo at 0% APR for 60 months
Deep well or full system rebuild
$9,500 to $16,500
or $158/mo at 0% APR for 60 months
Plumbing visit, waived when you go ahead with the repair
$49
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
The $49 visit is waived when you go ahead with the repair. Pulling a pump just to look at it is $1,300 to $2,000, so we test the tank, the switch and the pump’s wire from the house first.
Replacing a pump needs no health department well permit in Virginia. We don’t drill or deepen wells; if yours needs that, we’ll tell you who to call.
Want your own number before anyone comes out? The well pump cost estimator asks what the water is doing and prices the likely fix.
What’s different in Gainesville
Gainesville mail covers two very different places. The Census Bureau’s Gainesville place, where four in five homes went up since 2000 and about eight in ten owner homes heat with gas, takes in only about 20 of the ZIP’s 66 square kilometers. Roughly 42 more sit in no Census place at all. Prince William Water customers here drink a blend of Potomac water from Fairfax Water’s Corbalis plant and Lake Manassas water the City of Manassas treats. On the land between the subdivisions, a house can still draw from its own well, and that’s who this page is for.
In October 2026 we were at a Gainesville house with low pressure, and the tank told most of the story: 36 gallons, about 20 years old, and leaking at the union where it meets the pipe. A bladder tank averages five to seven years, so that one had been living on borrowed time for a while. A small tank also means the pump starts more often, and Franklin Electric rates its smaller motors for at most 300 starts a day and its 1 to 5.5 horsepower motors for 100. More gallons in the tank means fewer starts.
When an old tank like that comes out, we look at everything plumbed around it: the tank tee, the gauge, the relief valve, the switch and the safety switch that cuts power to the pump. Those parts age together, and a weep at one union often means the next one isn’t far behind. You get each piece priced in writing, the tank alone at $2,200 to $2,950 or a fuller refit, and you pick.
There’s a state angle too. The General Assembly told Virginia’s DEQ to look at whether a groundwater management area is needed, but only in Loudoun and Fauquier. In July 2026 Prince William’s Sustainability Commission recommended the County petition to add its western half, since it sits on the same Culpeper Basin rock. Nothing changes for your pump today. It’s a reminder that the water under a Gainesville well is shared with every neighbor drawing from the same cracks.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When to call
A slow drip at the pressure tank’s fitting is easy to live with for a month. On a tank that’s been there twenty years it usually means corrosion at the union or the tank, and when a tank lets go there it can empty onto the floor. Catch it while it’s still a drip.
On a house built in the 2000s, the pressure tank, the switch and often the pump are the builder’s originals. A bladder tank lasts five to seven years on average, so many of these are on their second or third.
A pump that starts every few seconds usually means the pressure tank lost its air cushion. Every start wears the motor, so it’s worth a call this week, not next month.
When the power goes out
The Virginia Department of Health puts it simply: if your home is on a well, the pump won’t work when the power is out. Here’s what to do before, during and after.
When a big storm is coming, fill a few jugs and the bathtub. Once the pump stops, all you have is what’s left in the pressure tank, and toilets need water to flush.
Many well pumps run on 240 volts. Franklin Electric’s installation manual says a transfer switch must be used any time a generator backs up a well pump, and VDH says to have the hookup made by a licensed electrician.
Franklin’s minimum for a 1 horsepower two-wire pump is a 6 kW generator, and 4 kW for a 1 horsepower three-wire pump. Not sure which yours is? The control box on the wall in the basement means three-wire.
Give the pump a minute to refill the tank. No water? Look at the well pump’s breaker. A surge can also take out the pressure switch or the control box, which we can test from the house.
VDH says to treat a well that was under floodwater as contaminated, and not to run the pump until its wiring is dry. Then shock chlorinate the well and test the water one to two weeks later.
Virginia Cooperative Extension recommends shock chlorinating after any repair to a well system, then a bacteria test one to two weeks later. A well’s water is the owner’s to look after: the EPA doesn’t regulate private wells.
Power back and still no water? Check the breaker, then call us. We’ll test the switch, the control box and the pump from the house before anything comes out of the well.
Who keeps the well records
The Prince William Health District oversees well water for Prince William County, Manassas and Manassas Park, and keeps its well records searchable by address. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who works on it
Questions to ask anybody who quotes you, us included.
Ask for both lines in writing. On an older Gainesville system the tank, tee and switch often make sense together, but sometimes the tank is the only thing worn out. Two prices side by side let you choose, instead of getting one bundled number and a shrug.
Pulling a pump is the expensive part of the job. Ask whether they check the tank’s air charge, the pressure switch and the pump’s amp draw and wire from the house first, so you don’t pay to pull a pump that was fine.
Ask for the part that failed and its price, written down, before the pump comes up. If the price can change once the pump is out, ask what would change it, like worn wire or a bad pitless adapter.
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.
“Tyson came out to diagnose our well system and did so with ease! Within no time he had it figured out and provided a solution for us. Very reasonable pricing, phenomenal quality of work and knowledge can’t be beat!”
Where we work
Next door to Gainesville: Catharpin, Haymarket, Broad Run, Bristow and The Plains.
Questions
Check the bill first: a Prince William Water bill with water charges on it means the utility. No water bill, and a tank with a gauge in the basement, garage or a closet, means a well. If you’re in one of the subdivisions built since 2000, the bill is the quickest answer.
More than before. After the Sustainability Commission flagged how little data the County had in 2024, the Board of County Supervisors started work with the USGS on a recharge study, how much rain makes it back into the ground. For your own well, the number that matters most is still your own water test.
A new submersible pump on your existing pipe and wire runs $2,781 to $4,000 installed, and with new wire and drop pipe it’s $4,900 to $6,500. A pressure tank alone is $2,200 to $2,950 and a pressure switch is $450 to $609. You get the number in writing before we pull anything.
Not a well permit. Virginia’s private well rules say replacing a pump, or a well cap or seal with an equivalent one, isn’t a well alteration. Building, deepening or abandoning a well does need a health department construction permit.
Ready when you are
Call, or send the form at the top. No water at all? Call, and say so first. 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 Gainesville 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.