Water Testing
Proper sampling and certified lab testing — for closings, FHA/VA and county requirements, or just knowing what your family is drinking.
Well disinfection is what comes next when a lab report shows total coliform or E. coli in your well. HydroWells chlorinates wells across Central Maryland, and we take calls 24/7 at (301) 393-7090. Total coliform is an indicator organism. Its presence says something from the surface found a path into your well or your plumbing. E. coli is the more serious result, because it points to waste reaching the water. Neither one changes the taste, the color or the smell of what comes out of the tap. A certified lab test is the only way to see it.
Wells pick up bacteria in a handful of common ways. A cracked well cap or a failed sanitary seal lets surface water and insects reach the casing. Flooding pushes runoff toward the wellhead. Bacteria also turn up after work on the system. State rules make whoever did that work responsible for disinfecting it. New well construction, a pump pulled and replaced, or a plumbing repair can all seed a system. If a positive result is already in hand, start with a certified lab sample. That tells us what we are treating before anything goes down the well.
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Shock chlorination floods the well and the household plumbing with a strong chlorine solution, then holds it there. Casing size and the water standing in the well set the dose, so every well gets its own number. We circulate the treated water back down the casing and wash the cap and wellhead. Then we pull it through every fixture until chlorine reaches each tap. Maryland's rule then calls for the well to stand without agitation for at least 12 hours. Nobody drinks or cooks with that water during the wait.
After the hold, we flush the system until the chlorine odor is gone. We do that in stages rather than in one long run. That water cannot go down a septic system or into a stream, so it goes somewhere safe. The retest only counts once no chlorine residual is left, or the lab result will not be valid. Every pump pull or replacement we do ends with the same chlorination step. If you want the step-by-step procedure in writing, your county health department and University of Maryland Extension both publish it.
Chlorinating a well kills what is living in it right now. It does not close the path the bacteria used to get in. Frederick County's guidance says a positive test after chlorination is evidence that contamination is still entering the system. That points at the ground water, the well, the storage tank or the plumbing. Retest two to four weeks out, because total coliform can regrow in a system that has carried it a while. Repeat hits usually trace to a wellhead problem or a shallow source, and a well inspection is where we start.
UV disinfection is the long-term answer when one shock will not hold. A lamp inside a sealed chamber treats every gallon on its way into the house, so bacteria are inactivated continuously. UV adds nothing to the water and leaves no taste. It needs clear water, because color, turbidity and suspended solids block the light and shield organisms from it. A sediment pre-filter goes in ahead of the chamber, sized off the rest of your treatment train. The UV units in our install photos are Viqua. Look for a unit rated to NSF/ANSI 55 Class A, the rating written for water of unknown quality.
A bacteria failure at closing holds up settlement until the water passes. Maryland counties run new and replacement wells through their own well and septic programs. In Frederick County the health department issues a Certificate of Potability. It calls for two bacteria samples taken at least 24 hours apart, both clear of total coliform and E. coli. Montgomery County handles the same sampling through its permitting office before a use and occupancy permit is issued. Lenders set their own conditions on top of the county's, so confirm both before you set a date.
The usual path is chlorinate, flush, then resample once the chlorine has cleared. Build the calendar around that wait. The well has to sit, the system has to flush clean, and the lab needs its turnaround. A UV system installed before the resample gives the buyer continuous treatment on every gallon. That matters when a second failure would sink the date. We write a free estimate after a look at the property. We take calls nights, weekends and holidays at (301) 393-7090. HydroWells is licensed through the Maryland State Board of Well Drillers.
Free, no-obligation estimates across central & western Maryland.
(301) 393-7090From the first look at the property to water proven at your tap, here is exactly how it goes.
We come see the actual situation — the well, the equipment, the water, the ground. What's failing, why, and what the fix really is. No blind quotes over the phone.
You get a free written estimate with a real number and a real plan. It says what's included — drilling, equipment, connection, permits — and it holds unless the scope changes.
The crew shows up with the right equipment and does the job the way we quoted it — drill, frack, pull the pump, set the tank, build the treatment. Anything unexpected, you hear about it immediately, not on the invoice.
We don't call it done until the water proves it: yield checked, pressure steady, system cycled, and testing when the job calls for it. Done means water at your tap — and you saying it's done.
Common questions about well disinfection across central & western Maryland. Don't see yours? Give us a call — we're happy to help.
Proper sampling and certified lab testing — for closings, FHA/VA and county requirements, or just knowing what your family is drinking.
Softeners, UV disinfection, iron and sediment filters, acid neutralizers — treatment systems designed off your actual water, installed and serviced.
Complete well system checks — yield, pump performance, tank, wellhead condition and water quality — documented for home sales or your own peace of mind.
Submersible and jet pumps diagnosed, repaired and replaced — no-water calls, weak pressure, short cycling. Available 24/7.
We install and service water softeners for Maryland well owners. Lab hardness and iron numbers decide the size and the setup.
New water wells for homes, new construction and failing-well replacements — drilled, cased, developed and connected, start to finish.
Drilling, hydrofracking, pumps, pressure tanks, testing, treatment — the rigs and the service trucks belong to the same outfit, so one call covers the whole system.
A house without water is an emergency, and we run the operation that way. Call day or night — phone triage is free, and if it needs a truck, a truck moves.
We look at the actual property, price it in writing, and tell you what is worth doing and what is not — including when hydrofracking beats drilling new. No phone guesses.
Based in Poolesville and Dickerson, working six counties. We know what this region’s fractured rock and limestone valleys do to wells — and we drill and service for it.
No water, weak pressure, a well to drill, water that needs testing or treatment? Call or send the form and we will look at the property with you and hand you a free written estimate — and for a house that is dry right now, we answer 24/7.
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