Well Inspection & Water Testing in St. Louis, MO
You find out exactly what is in your water. We test it, put it in writing, and tell you what to do about it.
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Well Inspection & Water Testing in St. Louis
A well inspection is a full checkup of your water system — from the well cap at ground level all the way down to the pump sitting hundreds of feet below. We check every part to make sure your well delivers clean, safe water at the flow rate and pressure your home needs.
Water testing pairs with every inspection. Your well can look fine from the outside while the water inside contains bacteria, minerals, or contaminants you can't see, smell, or taste. The EPA recommends private well owners test at least once a year. Test more often if you notice any change in taste, smell, or color.
Annual checkup, real estate well certification, or something suddenly seems off with your water — we run thorough inspections and certified lab testing for St. Louis homeowners and give you a report you can act on.
When Do You Need a Well Inspection?
Annual maintenance: The National Ground Water Association recommends a well inspection at least once a year. Annual visits catch small problems early — a cracked well cap, a slow drop in flow rate, a pressure tank losing charge — before they turn into emergency repairs.
Buying or selling a home: Most lenders and most buyers in the St. Louis area require a well inspection and water test before closing. We provide certified inspection reports that meet real estate transaction requirements across MO.
Changes in water quality: Water suddenly tastes metallic, smells like rotten eggs, looks cloudy, or leaves orange stains on fixtures — those are signals that something changed in your well or aquifer. An inspection and water test finds the cause.
After flooding or severe weather: Heavy rain and flooding can push surface water into a well — and surface water carries bacteria. After a significant weather event, a bacteria test confirms your water is still safe.
New property with an existing well: Bought property with a well you didn't drill? An inspection tells you the age and condition of the system, whether repairs are needed, and whether your water is clean.
What We Inspect
Well Cap & Seal
The well cap sits at ground level and is the first line of defense against contamination. We check that it is tight, the sanitary seal is intact, and nothing — insects, rodents, surface water — can get into the casing.
Well Casing
The casing is the pipe that lines the borehole and keeps the well clean. We inspect the visible section for cracks, corrosion, or physical damage. A compromised casing lets surface water and contaminants seep into your supply.
Flow Rate & Yield
Gallons per minute — that is how we measure your well's output. We test it under load to make sure your well can meet peak household demand. A flow rate that has dropped from previous tests can signal a pump issue or a dropping water table.
Pump & Pressure System
We run the pump through its cycle, check the pressure tank charge, verify the pressure switch is set correctly, and inspect electrical connections. A pump running outside normal parameters wears out early. We catch that before it fails.
Water Level
We measure the static water level — how deep the water sits when the pump is at rest — and the drawdown level — how far it drops while pumping. This tells us whether your aquifer is healthy and whether the pump is set at the right depth.
Surrounding Area
We walk the area around your wellhead and look for contamination risks — septic systems, fuel storage, animal pens, drainage paths. Missouri law requires minimum setback distances from these sources for a reason. We flag anything that puts your water at risk.
Water Testing Services
We collect water samples from your well and send them to a certified laboratory. Results come back in 5 to 10 business days. You get a plain-language report that tells you what was found, whether it is within safe limits, and what to do about it if it is not. Here is what we test for:
Bacteria Testing
Coliform and E. coli testing checks for bacterial contamination that can make your family sick. This is the most important test for any private well. Do it every year. If we find bacteria, we can shock chlorinate your well to eliminate the contamination.
Mineral & Hardness Analysis
We test for iron, manganese, calcium, magnesium, and pH levels. High iron causes orange staining on your fixtures and laundry. St. Louis area well water tends to run hard because it comes from limestone and dolomite aquifers — the same rock that gives Missouri its excellent groundwater also adds calcium and magnesium to it. Hard water is safe to drink, but it leaves white scale inside pipes, water heaters, and dishwashers and shortens appliance lifespan. Annual testing tells you your exact hardness level so you can decide whether a water softener makes sense for your home.
Nitrate & Contaminant Screening
Nitrates are a concern for private well owners across Missouri. The rural counties surrounding St. Louis — Franklin County, Jefferson County, Lincoln County, and Warren County — all have active farms where fertilizer use is common. Spring rain washes nitrates from fields into the soil and down into groundwater. If your well is on or near agricultural land, annual nitrate testing is important. High nitrate levels are especially dangerous for infants and young children — the safe limit set by the EPA is 10 mg/L. We also screen for arsenic, lead, and other contaminants based on your location and local geology.
Real Estate Water Testing
Buying or selling a home with a private well in St. Louis? You get the water quality testing report your lender requires. Our certified reports are accepted by mortgage lenders and real estate inspectors across MO. We can often schedule quickly to keep your closing on track.
Well Inspection Cost in St. Louis, MO
The cost of a well inspection in the St. Louis area depends on what is included. A basic visual inspection costs less than a full system checkup with lab water testing. Real estate certifications are more involved because lenders require detailed written reports. We give you clear pricing before we schedule the visit — no surprise charges.
Call (314) 860-7807 for exact pricing and to schedule your inspection.
Well Inspection Service Areas
We provide well inspections and water testing across St. Louis, MO and the surrounding areas including Clayton, Florissant, Chesterfield, Kirkwood, Ballwin, Maryland Heights, Hazelwood, Ferguson, O'Fallon, St. Charles, Wentzville, Arnold, and other nearby communities. Annual checkup, real estate certification, or something just seems wrong with your water — we are ready to help.
Frequently Asked Questions
How often should I have my well inspected?
At least once a year. Annual inspections catch problems early — before a slow pressure drop or a small crack in the casing turns into a bigger, more expensive repair. You should also get an inspection after flooding, nearby construction, or any change in your water's taste, smell, or color.
How often should I test my well water?
The EPA recommends testing for bacteria and nitrates at least once a year. Test more often if you have infants in the home — nitrate levels above 10 mg/L are dangerous for babies. Also test more often if your well has had past contamination or if you live near active farmland in counties like Jefferson, Lincoln, Franklin, or Warren.
What happens if bacteria is found in my well water?
Do not panic — it is fixable. We shock chlorinate the well, which means flushing it with a chlorine solution that kills the bacteria. Then we retest to confirm it is clear. If contamination keeps coming back, we dig into the cause and recommend a permanent fix — UV disinfection, well casing repair, or addressing a contamination source near the wellhead.
Do I need a well inspection to sell my house?
In most cases, yes. Mortgage lenders require a well inspection and water test for homes with private wells. Even when it is not required by the lender, buyers usually ask for one during due diligence. Having a recent report ready can speed up your closing.
Why does my well water smell like rotten eggs?
That smell is hydrogen sulfide gas — a naturally occurring gas that is common in groundwater, especially in areas with sulfur-bearing rock. It is usually not harmful at low levels but it is unpleasant and can leave a smell on dishes and laundry. A water test measures the level. Treatment options include aeration systems, carbon filters, or chemical injection depending on how bad it is.
Schedule Your Well Inspection in St. Louis
Know exactly what is in your water. Call today to book an inspection and water test — and get a clear report you can act on.
Call Now (314) 860-7807