Opens in a new tab
Poolesville, MD · Twelve miles west

Your Plumber in Poolesville, MDFisher Ave to the Ag Reserve.

We are twelve miles east of Fisher Avenue, and Poolesville is the one place on our map where the water itself is usually the problem. The town pulls from twelve wells into the aquifer under your feet, and that water comes up hard. Around 15 grains hard. If your water heater is on its second element, your fixtures are crusted white, and your dishwasher died young, that is not bad luck. That is the water.
Filtration & Softening
Wells, Septic & Town Water
24/7 Emergency
Same county, same roads
Poolesville and 20837
Built for Poolesville water

The hardest water we work in, and what it costs you

Poolesville does not buy its water from WSSC. The town runs its own system, drawing entirely from wells sunk 285 to 800 feet into the New Oxford Formation aquifer. That is genuinely good source water, protected as a sole source aquifer since the 1990s, and the town treats it lightly on purpose. The tradeoff is mineral content. The town’s own figure is roughly 15 grains per gallon of hardness from calcium carbonate, which is hard by any standard and the hardest water we see anywhere in Montgomery County.

Hard water does not break anything today. It costs you slowly. Scale coats the inside of your water heater until the burner is heating a layer of rock instead of water, and a heater that should give you twelve years gives you seven. It narrows supply lines, stiffens valves, ruins cartridges, and takes years off dishwashers and washing machines. Most Poolesville homeowners we meet have replaced three appliances before anyone told them the common denominator. Treating the water is usually the cheapest plumbing decision available to a Poolesville house.

What we do in Poolesville

Plumbing services in Poolesville

The six things Poolesville homes call us for most. Tap a service for the details.

Water Filtration & Softening

Whole-home treatment sized to Poolesville's hardness, including PFAS-capable filtration.
Learn more

Water Heaters

Replacement, repair and tankless, plus flushing and treatment so the next one lasts longer.
Learn more

Well Pumps & Pressure Tanks

For the Ag Reserve properties outside town on private wells.
Learn more

Septic Systems

Out on acreage where there is no town sewer to connect to.
Learn more

Water Line Replacement

We pull new water lines trenchless with a missile and compressor. One to two a day, every day.
Learn more

Sewer Lines & Camera Inspection

Cameraed from the lowest drain in your house all the way to the tap, then repaired or replaced.
Learn more
What we see in Poolesville

Common plumbing issues in Poolesville homes

Tell us whether you are on town water or your own well and we can narrow it before we arrive.

1

Scale, everywhere

At 15 grains, calcium carbonate plates out on every surface hot water touches. Water heaters that die early, a rumbling or popping tank, shower heads that clog, white crust on fixtures, and appliances that quit years ahead of schedule.

2

PFAS in the town supply

Poolesville detected PFOA and PFOS above EPA health advisory levels in two of its wells, mailed a public health advisory to every resident, took those wells offline and installed carbon filtration at the wellhead. Plenty of homeowners here want treatment at their own tap as well, and we install filtration rated to remove PFAS.

3

Well and pressure tank failures

Outside town limits there is no utility to call. When a private well pump or pressure tank goes, the house has no water at all. Short cycling, pressure that swings, or sputtering taps are the warnings that come first.

4

Roots and long underground runs

Big trees planted close to the house, or right over where the clean-out or tap connection sits, put roots into the joints. Ag Reserve lots also mean service lines running a long way from the road, often under a driveway or a field. A yard puddle that never dries, water you can hear running, or a bill that jumped for no reason all mean the same thing: get someone out to look.

Where we work

Poolesville areas we serve

The town, 20837, and the Ag Reserve around it.

Downtown & Fisher Avenue
The heart of town along Route 107, including the older homes near Whalen Commons.
Meadow Park
Mid-1960s homes, now well past the point where original plumbing gives out.
Westerly & Summerhill
1970s single-family and townhomes, where we do a lot of heaters and repipes.
Brightwell Crossing
Newer construction, where it is builder-grade fixtures and water treatment, not old pipe.
Elgin Road & Wootton Avenue
Established streets on the Route 109 side of town.
Beallsville, Barnesville & Dickerson
Farms and acreage on private well and septic, out toward Sugarloaf and White's Ferry.
Twelve miles west

Actually local, not “serving the DMV”

Poolesville is a short run west for us on the same county roads you drive. We know the difference between a town water address and a well out on Whites Ferry Road, and we stock the truck accordingly. Underground sewer and water line work can only legally be done by a master plumber pulling a permit, and we have three master plumbers on staff. We call Miss Utility before we dig, and we are available 24 hours a day with our own office team answering the phone, not an answering service.

Same-day coverage across Poolesville and 20837
We work town water, private wells and septic alike
Family owned and women owned since 2008, MHIC licensed, WBENC certified
Why Poolesville calls us

A new school plumber with old school values

We are People First Plumbing, and what that means on a Poolesville job is that we fix the cause instead of the symptom. Replacing a scaled-up water heater without treating the water that killed it just starts the clock again. So we test, we tell you plainly what the water is doing to your house, and we price the treatment alongside the repair so you can decide with real numbers. We are also happy being the second or third plumber on the job. Finding what somebody else could not is most of what we are known for, and we would rather think our way around a problem than dig up your yard looking for it.

The Clarksburg Plumbing crew on a job at a home near Poolesville, MD
Meet your local crew

A crew you are glad to let in

Our technicians are our own trained, background-checked team, not subcontractors picked up for the day. They show up when we said, cover their boots, explain what they are doing in plain language, and clean up before they leave. Poolesville is a small town where people ask their neighbors who they used, and that is the only reason we need to do this properly.

From our customers

What our customers say

4.8
Based on 572 Reviews
google
Riadh Z.
September 30, 2026

Tyler was great professional and knows what he’s talking about

google
Natalie R.
September 29, 2026

I had a great experience with Tyler when he came out to replace our toilet flushing system. From start to finish, Tyler was incredibly courteous, professional, and knowledgeable. He walked me through what needed to be fixed, answered all my questions patiently, and completed the job efficiently. It’s rare to find such high-quality service and attention to detail. Everything is working perfectly now, and he left the work area completely clean. I highly recommend Tyler for any plumbing needs!

google
Todd O.
September 28, 2026

Tyler was polite and professional. Satisfied.

google
Robert B.
September 25, 2026

John and Maddy showed up on time and did a superb job. Very friendly and informative

google
Jan B.
September 25, 2026

Tyler is great! I am very satisfied with his plumbing work.

google
william B.
September 24, 2026
google
Catherine J.
September 24, 2026

John and Maddie were fantastic. They fixed my original issue and then helped me out with a leaky shower and answered all my questions. I highly recommend both John and Maddie!

google
Pamela B.
September 21, 2026

Absolute best plumbers I have ever used. Needed them a few times recently and each time they were so professional, kind and resolved each problem the first time around. This last issue took them several hours to fix. They explained everything along the way and gave a very fair price for a lot of work. They also work very cleanly! I will never use another plumber! I wanted to add a new review but I could not so I am editing my previous one. I had to use Clarksburg Plumbing again today and like last time, they were exceptional. I was fortunate enough to have John and Madeleine as my service technicians. I will always request them going forward. They are kind, professional and knowledgeable! I am sure the company knows how fortunate they are to have them as part of their team!

google
John S.
September 18, 2026

We thank Clarksburg Plumbing again for superior, high quality and friendly service! ----- Clarksburg Plumbing visited us last week to repair an external spigot that had been leaking. The work involved creating a little inside access panel. Within and without, a nice, neat job by Charlie and his understudy apprentice, Chris. Problem solved and happy campers here! ----- UPDATE: Plumber John Brown presented himself on time and got right to work replacing my Mom's ancient leaky kitchen faucet with a new store-bought one that I provided. During the process, Mr. Brown detected and showed me two other problem areas contributing to the water leaks: a cracked drain pipe and then rusted threads on the sink trap. He efficiently and expertly repaired all three elements to our full satisfaction. Plus, John is a super nice guy, completely honest and classy enough to laugh at all my corny jokes! The next time you need any plumbing work in your home or business, I strongly endorse John Brown and anyone on the Clarksburg Plumbing team! UPDATE 2: John and his understudy Maddie visited, and quickly solved the problem of a pinhole leak in copper tubing leading from our hot water heater. He advised us on other plumbing needs, for which we have scheduled and will otherwise follow-up. Thank you Clarksburg Plumbing for your top quality people - John Brown in particular - and performance.

google
John H.
September 17, 2026

Their work was excellent. The problem solved a difficult situation with a water pipe leak and worked hard to implement it. Very grareful for the work of Franklin, Noah, Cotton, Markell, Tevon, Jason, Deybis

google
G M.
September 16, 2026

Tevon, Noah, Markell, and Morrow were sent by Clarksburg Plumbing LLC to repair an outside broken waterline They arrived at the appointed hour and completed the work in about 3 hours. I was very impressed with them and I would like to recommend all four of these very professional and friendly technicians. Clarksburg Plumbing is a fantastic organization; the office staff, Katie and Charlotte, who helped me are the best.

google
Tom F.
September 15, 2026

Our well lines began to leak after many years of service. Noah Zohrabi,YDeybis Gomez & Markel Watts came to the rescue! Excellent service from some very professional, courteous & knowledgeable folks!

google
Viannah E.
September 12, 2026

Thank you to Seth, who came on Wednesday and fixed one of our two toilets and fixed our primary bedroom shower. And thank you to Charlie, who came today and replaced our other toilet and replaced our garbage disposal. You are both lifesavers! Our weekend (and going forward) will be MUCH nicer now that we can use our bathrooms (and garbage disposal) again. Highly recommend Clarksburg Plumbing.

google
Ms. R.
September 11, 2026

Excellent service today from John Brown and Madeleine S. They were very kind and took time to explain the issue with my dishwasher. I really appreciate their professionalism and efficiency. I would definitely consider using this company again based on my service today!

google
Annabelle S.
September 11, 2026

GREAT service and expertise! John and Maddie just installed a water filtration system to our home. The process took one day to install and then they came back from the 48 hour install period to ensure everything was working well. John was familiar and knowledgeable about the water system we bought. Maddie and John kept our space clean, clearly explained how to ensure longevity for our system to last, and the difference it will make in our home. We appreciate their hard work and professionalism. This is our second time using Clarksburg plumbing. We would highly recommend their company to our family and friends.

google
Dia R.
September 11, 2026

We had a good experience with Clarksburg Plumbing: it was easy to schedule, they communicated clearly, arrived on time, and did a great job on completing the work.

google
Dan M.
September 11, 2026

Great

google
Roxie H.
September 7, 2026

John did Excellent job with installing water refrigerator line for my refrigerator. My Condo was built 1983, and pipes were complicated, but not for John. He found it easy and finished the job in the timely manner. I am very happy customer. Thank you John!!

google
Rebecca W.
September 4, 2026

John Brown was knowledgeable, responsive and pragmatic. He saved us time by diagnosing then recommending best course of action. We are now waiting for the estimate for the project and will be going with Clarksburg Plumbing on our 1948 cap cod renovation. Highly recommend this company’s knowledge, professionalism and responsiveness.

google
vince R.
September 3, 2026

Franklin and his crew showed up promptly and communicated great with us to help limit disruption with the tenants at 4 of our building. Unfortunately for us a second water main leak occurred the day before. But luckily for us they were able to stay on site another 2 days and knock the second one out, even staying till 8pm to find the line and get it repaired. These will be the guys I request for our next time needs

google
Jonathan I.
September 3, 2026

Seth and Brady did a fantastic job replacing our water heater. They were professional, courteous, and detail oriented. They arrived on time and did careful, clean work all the way through. We have worked with Clarksburg Plumbing on smaller items before this and would be very happy to utilize their services in the future, as well.

google
Ata B.
September 2, 2026

John and maddie were exceptionally professional and did an most effetive job in installing a expansion tank on our water heater.

google
Zach M.
September 2, 2026

Brady did an excellent job. From the time I called to the time the repair was completed was within 4 hours

google
Mary W.
September 2, 2026

We were very happy with the service we received today from John and Maddie. They were both very professional, ran the necessary tests to confirm the issue, and explained what they were doing step by step. They wore the protective booties to keep the floor nice and dry from the rainy weather too. Thank John and Maddie for all your help!

google
John T.
September 2, 2026

Seth and Brady were great. Fair price, courteous, work completed quickly, and looks good.

Good questions

Poolesville plumbing FAQ

What Poolesville homeowners ask us most.

Do you offer emergency plumbing services in Poolesville?
Yes, 24 hours a day, and the person who picks up is on our own office team rotating through after-hours coverage. Not an answering service and not AI. Call (301) 972 2223. We are twelve miles east, so we can be out to most Poolesville and 20837 addresses quickly, and we will get a stocked truck moving rather than booking you for next week.
Why is Poolesville water so hard?
Because the town draws entirely from groundwater, twelve wells reaching 285 to 800 feet into the aquifer, and that water picks up calcium carbonate on the way through the rock. The town's own figure is around 15 grains per gallon. Anything over about 10 grains is considered very hard. It is good water, it just carries a lot of mineral, and that mineral shortens the life of everything it flows through.
What can I do about the hard water in my Poolesville home?
Whole-home softening is the direct answer, sized to your household and your actual hardness rather than sold off a shelf. We usually pair it with a look at your water heater, since that is where scale does the most expensive damage. If your heater is already several years in, flushing it and treating the water going forward buys you time.
Can you install filtration that removes PFAS?
Yes. Poolesville found PFOA and PFOS above EPA health advisory levels in two town wells, notified every resident, pulled those wells offline and installed carbon filtration at the wellhead. The town is treating the supply, and a lot of homeowners want treatment at their own tap too. We install whole-home filtration rated for PFAS reduction and will walk you through what each media type does and what maintenance it needs.
My Poolesville property is on a private well and septic. Can you help?
Yes, and that is a big share of what we do out here. Plenty of Ag Reserve properties around Beallsville, Barnesville and Dickerson are not on town water or sewer. We service well pumps, pressure tanks, filtration and treatment, and septic systems. On a private well the mineral and iron content varies property to property, so we test rather than assume.
Is the sewer problem mine or the town's?
This is the question we get most, and there is a real way to answer it instead of guessing. We camera the entire line, starting from the lowest drain in the house, a basement toilet or a clean-out, and run it all the way to the tap connection. The camera shows us the condition along the way, breaks, roots, bellies. The change in pipe tells us where your responsibility ends and the utility's begins. While the camera is in there we use locating equipment above ground to pinpoint exactly where the problem sits, which direction the line runs and what is in the way. You get the answer, not an opinion.
I have big trees near the house. Will roots wreck my sewer line?
They can, especially where a tree sits close to the clean-out or the tap connection. It is not automatically a dig. We start by snaking with cutter heads. If the line is otherwise sound and the budget is not ready for excavation, jetting plus a RootX application buys real time. When the pipe itself is done, then we talk about repair or replacement, and we will tell you honestly which one you are looking at.
What drives the price on underground work?
Depth and ground conditions, mostly. Past ten feet down, the job gets meaningfully more expensive, and rocky ground out here does the same thing. So does working near a street or sidewalk, tight access, or obstacles we have to work around. On a property with an easement or a shared driveway there is coordination involved too, and we handle that with everyone concerned. We give you the range and what is driving it before we start.
Do you offer financing? What about insurance?
We offer financing through GreenSky, which is usually what matters on whole-home treatment or an underground job. We do not work directly with insurance carriers, but if yours is involved we are glad to talk to them and answer whatever they need so you can get reimbursed after the work is done.
What plumbing services do you offer in Poolesville?
Water filtration, softening and treatment, water heaters and tankless, well pumps and pressure tanks, septic, water and sewer line repair and replacement including trenchless, camera inspection and locating, drain cleaning and hydro jetting, gas lines, fixtures and repiping, plus 24/7 emergency service, residential and commercial. One home service company in Poolesville for the whole system, from the well or the meter all the way through the house.
Your plumber in Poolesville

Hard water is a slow, expensive problem.Let's Flow.

Need a plumber in Poolesville? Book online or call and talk to a real person on our team. We will test your water, tell you plainly what it is doing to your house, and give you the honest version of what it costs to stop. Financing available. Available 24/7 across Poolesville and western Montgomery County.
Book online

Let's get started

(301) 972 2223
Available 24/7 for Poolesville and the Ag Reserve
Book a service