Maryland well water questions, answered.

Check whether the house has power, then look at the breaker for the well pump (usually a double-pole, 240-volt breaker labeled “well” or “pump”). If it has tripped, you can reset it once. If it trips again, leave it off and call.

Don’t open the pressure switch cover, the pump control box or the wellhead wiring. They carry 240 volts. Look at the pressure gauge on the tank instead: a reading near zero with the breaker on points to the pump, switch, control or wiring, and that’s a service call.

Rapid on-off cycling, every time a faucet opens, is called short cycling. The most common cause is a pressure tank that has lost its air charge or failed. Other causes are a leaking check valve, a leak in the line, or a faulty pressure switch.

Short cycling wears out pump motors and pressure switches fast, so it’s worth getting checked before it becomes a no-water call.

Low or swinging pressure usually comes from a pressure tank problem, a pressure switch set or worn incorrectly, a clogged sediment filter, a failing pump, or a well that can’t keep up with demand.

A quick test: if pressure drops after a filter change it was the filter; if it fades during long showers and recovers later, the well’s yield or the pump may be the limit. A technician can measure flow and pressure at the tank to tell which.

Yes. A pump that never shuts off may be pumping into a leak, losing prime, running with a worn pump end that can’t build pressure, or running a well dry. It wastes power and can burn up the motor.

Turn the pump’s breaker off if it’s running and no water is being used, then call. Don’t leave it running for hours.

Spitting air usually means the water level in the well is dropping to the pump, there’s a hole in the drop pipe, or a pressure tank bladder has failed. In some wells, dissolved gases cause it.

If sputtering starts after heavy use and clears after a rest, the well may be drawing down. That’s worth diagnosing before the pump runs dry.

Yes. Piedmont Well Service lists its hours as open 24 hours, seven days a week. Call (240) 924-8081.

Reviewers mention a Labor Day call and same-day and next-day visits. Night and holiday availability depends on the work already scheduled, so call and they’ll tell you when they can be there.

A submersible well pump often lasts around 10 to 15 years, and some run much longer. Life depends on how often it starts, the water chemistry, sand, voltage, and whether the pressure tank is protecting it.

A failing pressure tank is the most common reason pumps die early, because it makes the pump start far more often than it should.

Many no-water calls are not the pump at all: a pressure switch, a control box part, a capacitor, a wire splice or the tank. Those are repairs. When the pump motor or pump end has actually failed, the pump is replaced.

On an older pump that has already been pulled for a problem, replacing it while it’s out can save a second pull. You should get the options and prices before deciding.

Signs of a failed pressure tank are short cycling, pressure that drops fast after the pump stops, a tank that sounds or feels full of water all the way to the top, and rust or leaks at the tank.

A technician checks the air pre-charge with the system drained. Some tanks can be recharged; a tank with a ruptured bladder or diaphragm needs replacing.

A constant-pressure system uses a variable-speed drive to change the pump’s speed so the pressure stays steady no matter how many fixtures are running. It feels like city water.

It suits larger homes and families who notice pressure swings. It needs a compatible pump and electrical setup, and the well has to have the yield to support it.

The pump, drop pipe and wire are pulled up out of the well, usually with a pump hoist. The pipe, wire and splices are inspected, a correctly sized new pump is installed at the right depth, and the system is tested for pressure and flow.

Pulling a pump is not a DIY job. The equipment is heavy, the wiring is 240 volts, and a dropped pump can block a well permanently. In Maryland, pump work is done by installers licensed through the State Board of Well Drillers.

A pitless adapter is the fitting on the side of the well casing, below frost depth, where the water line leaves the well underground. It keeps the line from freezing and lets the well be sealed at the top.

Older homes sometimes have well pits instead, which are more exposed to surface water and freezing. Upgrading a pit to a pitless adapter and a sealed cap is often recommended.

Test for bacteria (total coliform and E. coli) and nitrate at least once a year, and after any flood, repair, or change in taste, color or smell. Test once for a broader panel (hardness, iron, manganese, pH, arsenic, radon in water) and repeat every few years.

Your county health department and the Maryland Department of the Environment can point you to State-certified labs.

Yes, unless the buyer waives it. Since October 1, 2024, Maryland Real Property § 10-713 requires a contract for a home with a private well to include water quality testing as a condition of the sale. Settlement can’t happen until buyer and seller have both received and reviewed the results.

The testing is done by a State-certified laboratory, which also reports the results to MDE. Results stay valid for three years, and the buyer can waive the requirement in writing. Baltimore County adds its own yield and quality requirements at sale.

It can be, especially in the Piedmont. The USGS found the highest median groundwater radon in Piedmont crystalline rock, and the Maryland Geological Survey names a phyllite belt through central Montgomery, western Howard, eastern Frederick and central Carroll counties as an area of elevated radon.

Radon in water escapes into the air at showers and faucets. A State-certified lab test tells you the number. Treatment, usually aeration, is only needed if the result is high.

Radon comes from the decay of uranium in rock, and some Piedmont granites and metamorphic rocks carry more uranium than others. Uranium itself can turn up in some wells.

It has no taste or smell, so the only way to know is a lab test for uranium (and gross alpha). If it’s present, point-of-use reverse osmosis or other treatment can be matched to the result.

A rotten-egg smell is hydrogen sulfide. It can come from the groundwater itself or from sulfur bacteria, and if it’s only in the hot water, the water heater’s anode rod is often the cause.

A test tells which. Fixes range from a water heater anode change to sulfur filtration or well disinfection.

Don’t drink it until it’s been tested. Use bottled water in the meantime and have it tested for bacteria and nitrate.

Sudden changes after heavy rain, flooding or nearby digging can mean surface water is getting into the well. Follow your county health department’s guidance.

Iron. Dissolved iron is invisible coming out of the ground and turns orange-brown when it meets air. Black stains usually mean manganese.

Iron filters, softeners (for low levels) or oxidation filtration remove it. The right choice depends on how much iron, whether manganese or sulfur is present, and the pH.

Acidic (low-pH) water. Water with a low pH and few dissolved minerals slowly dissolves copper, leaving blue-green stains and eventually pinhole leaks. It’s common in Maryland’s crystalline Piedmont rock.

An acid neutralizer filter, usually with calcite media, raises the pH and protects the plumbing. Acidic water can also carry dissolved copper and lead from plumbing into drinking water, so test it.

If your water is hard (scale on fixtures, spots on dishes, crusty showerheads, short water heater life), a softener helps. Hard water is common in limestone areas like the Hagerstown and Frederick valleys.

A hardness test sizes the softener. Many Piedmont wells are actually soft and acidic, and need a neutralizer rather than a softener, which is why testing comes first.

An ultraviolet (UV) system disinfects water by exposing it to UV light that inactivates bacteria and viruses. It doesn’t add chemicals or change taste.

It needs clear water to work, so it usually goes after sediment and iron filtration, and the lamp needs replacing on schedule.

No single filter does. Each treatment targets specific problems: softeners for hardness, neutralizers for low pH, oxidizing filters for iron and sulfur, UV for bacteria, reverse osmosis for drinking-water contaminants like nitrate or arsenic.

That’s why treatment should be chosen from a test of your water, not from a sales pitch.

In Maryland’s Piedmont, water is stored in fractures in hard rock, not in a continuous layer. A driller keeps going until the well crosses enough water-bearing fractures, so depths and yields vary a lot even between neighbors.

Your property’s well completion report, filed with the county and MDE, shows the depth, casing length and the yield measured when it was drilled.

Piedmont wells (Carroll, Frederick, Howard, northern Baltimore, upcounty Montgomery) are drilled into fractured crystalline rock. Coastal Plain wells (the Eastern Shore and Anne Arundel) are drilled into layers of sand and clay and draw from aquifers such as the Columbia, Calvert, Aquia and Piney Point.

Coastal Plain water more often has iron, and shallow wells there can pick up nitrate. Piedmont water is more often acidic and can carry radon.

Well construction permits are issued locally on behalf of the Maryland Department of the Environment, usually by the county health department. In Montgomery County it’s the Department of Permitting Services, and in Baltimore County it’s the Department of Environmental Protection and Sustainability.

New wells must meet setbacks from septic systems and buildings. Montgomery County, for example, requires 100 feet from a septic system and 30 feet from a foundation.

Wells with a buried pitless adapter rarely freeze. What freezes is exposed piping: lines in unheated crawlspaces, garages and well pits, pressure switches in cold rooms, and shallow lines where the cover was disturbed.

Keep the pressure tank room above freezing, insulate exposed pipes, and keep well pits covered. If you lose water in a cold snap, don’t use open flame on pipes or wiring; call.

In a long drought the water level in the well can drop, and wells with low yield may sputter or run short during heavy use. Fractured-rock wells in the Piedmont can be more sensitive than deep confined aquifers.

Spread out laundry and irrigation, fix leaks, and if the well starts drawing air, have the pump setting and yield checked. Low-water protection can keep the pump from running dry.

Shock chlorination disinfects a well and the plumbing with a strong chlorine solution, then flushes it out. It’s used after a positive bacteria test, after flooding, and after the well has been opened for repairs.

Done wrong, it can damage equipment or leave the water unsafe, and it doesn’t fix a well that keeps letting surface water in. Retest after disinfection to confirm it worked.

In Maryland, well drillers, water pump installers and water conditioner installers are licensed by the State Board of Well Drillers, part of the Maryland Department of the Environment (MDE). The Board publishes a roster of active licensees.

Ask the contractor for their license number and check it against the MDE roster or with the Board. Also ask about insurance and how they handle permits.

It depends on the pump depth, the pump size, how much pipe and wire need replacing, whether the tank and controls are replaced too, and access to the well. A shallow, simple swap costs far less than a deep well with new pipe, wire and tank.

Piedmont Well Service explains the options and the price before starting work. Call (240) 924-8081 to describe your system.

Piedmont Well Service LLC is a family-owned company from Carroll County with nearly 20 years of combined experience in the well water industry. Customers name Bryan and Tyler in review after review.

In their own words: “We believe in honest work, fair pricing, and treating every customer with respect.”

Howard, Carroll, Frederick, Baltimore, Montgomery, Washington and Anne Arundel counties, plus Queen Anne’s, Talbot, Caroline and Dorchester on the Eastern Shore.

If you’re near the edge of that area, call and ask.

Well drilling and septic work aren’t among the services Piedmont Well Service lists. Their work is well pumps, pressure tanks and controls, water testing and water treatment. New wells are drilled by a licensed Maryland well driller.

If you’re not sure which kind of contractor your problem needs, call (240) 924-8081 and describe it.