By Prerna Kapoor, CLHMS | REAL Brokerage | May 19, 2026
Quick answer: If you are buying a home in Elbert County, parts of Douglas County like Franktown or Elizabeth, Park County, or rural Larimer County, there is a good chance the home runs on a private well instead of municipal water. Colorado’s Division of Water Resources issues the permit that controls what the well can be used for, and the permit transfers with the property. During your inspection contingency, you want a water quality test, a flow rate test, and a pump inspection. Plan on roughly $100 to $200 a year in testing and maintenance, plus a few thousand dollars every 15 to 25 years to replace the pump.
I had a buyer last summer looking at a 5-acre property in Franktown. Beautiful home, mountain views, the works. The well permit on file allowed household use only. My buyers had two horses they were planning to bring out. We pulled the permit history and discovered the previous owner had been watering livestock and a small garden for years, which the permit did not cover. The seller had to apply for a new well permit before closing, which took six weeks and almost killed the deal. We held the home with a contract extension and got it done, but it was a stressful month.
That story is why well homes need their own checklist. Here is what to do during your inspection contingency, and what to budget for ongoing.
Reading the well permit before you write the offer
Every legal well in Colorado has a permit issued by the Division of Water Resources, which is part of the Department of Natural Resources. The permit is a public record. You can look it up by address or by the property’s legal description through the DWR online search before you even tour the home.
The permit tells you a lot. The most important thing is the use designation. Common permit types include:
Household use only. Indoor use for one single-family home. No outdoor irrigation beyond domestic landscaping, no livestock, no commercial use. This is the most restrictive permit and the most common in rural subdivisions.
Household plus 1 acre of garden. Indoor use plus limited outdoor irrigation up to one acre. Some permits allow a few non-commercial domestic animals as well, but you have to read the specific permit language.
Household, livestock, and irrigation. Broader use, usually on larger acreage. These permits often come with annual production limits measured in acre-feet.
If your plans for the property require more water than the permit allows, you need to either get a new permit before closing or accept that you cannot legally do what you want with the property. Permits are not always easy or quick to amend, especially in areas where the underlying aquifer is over-appropriated. Always verify the permit matches your intended use before you go under contract.
The three tests every buyer should do during inspection
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Your standard inspection covers the visible parts of the home. A well needs its own tests, and you should arrange them during your inspection objection window so any problems can become objection items.
Water quality test. A certified lab tests for total coliform bacteria, E. coli, nitrates, pH, hardness, iron, manganese, and a panel of heavy metals like arsenic, uranium, and lead. Colorado has natural uranium in groundwater in some parts of the Front Range and the foothills, so the heavy metals panel is not optional. Expect to pay $150 to $400 for a comprehensive panel through a certified lab. Some inspectors offer this as an add-on, or you can use a dedicated water testing company.
Flow rate test. A licensed well contractor or qualified inspector measures how many gallons per minute the well sustainably produces. The Colorado Division of Water Resources considers 1 gallon per minute the absolute minimum for a single-family home, but in practice most lenders and most agents want to see at least 3 to 5 gpm for comfortable household use. Foothills properties sometimes produce as little as 0.5 gpm, which means you need a storage cistern to be livable. Expect to pay $200 to $500 for a proper flow test.
Well pump and pressure tank inspection. A well contractor inspects the pump itself, the pressure switch, the pressure tank, and the wiring. They look for leaks, corrosion, age of the pump, and whether the pressure tank is holding properly. Pumps typically last 15 to 25 years depending on water chemistry and how hard they work. If the pump is 20 years old, you are buying a future replacement bill. Inspection runs $150 to $300.
Total for all three: budget $500 to $1,200 for a thorough well evaluation. This is on top of your standard home inspection. Worth every dollar.
Common problems and what they mean
Some issues come up often enough that you should know what they signal.
Low flow rate. If the well is producing under 2 gpm, you need a cistern and a different kind of pump system. The home is livable but the setup is more expensive and more complex. Some foothills homes have lived with 1 gpm for decades, but the buyers need to know exactly what they are getting into.
Total coliform positive, E. coli negative. Some kind of contamination is reaching the well, but not from a sewage source. Could be a damaged well cap, a cracked casing, or surface water infiltration. Usually fixable by chlorinating the well and addressing the entry point. The cost is a few hundred dollars.
E. coli positive. Sewage contamination, which is serious. Often means a nearby septic system is failing, or the well is too close to a septic field. This can be a deal-killer or it can be a renegotiation, depending on what the source is. Do not accept verbal assurances; you want documentation that the source has been identified and corrected, and a re-test showing clean.
High nitrates. Often from agricultural runoff or septic. Above the EPA limit of 10 mg/L is unsafe for infants and pregnant women. Treatment systems exist but they add cost.
High uranium or arsenic. Naturally occurring in some Colorado groundwater. Reverse osmosis systems handle this for drinking water, but expect to pay for installation and ongoing filter replacement.
Shared well. Some rural subdivisions have one well that serves multiple homes under a shared well agreement. Read the agreement carefully. Who pays for repairs? What happens if the well needs to be deepened? What if a neighbor stops paying their share? Shared wells are not deal-killers but they add a layer of legal and financial complexity that you need to budget for.
What well ownership actually costs each year
Compared to a municipal water bill, a well is cheaper in some ways and more expensive in others. Here is the realistic annual budget:
Water testing. $100 to $200 per year for an annual bacteriological test and a periodic full panel. Some homeowners only test if they notice a change in taste or color, but the EPA recommends annual testing at minimum.
Electricity for the pump. $50 to $200 per year depending on usage and pump efficiency. Wells are usually cheaper than municipal water bills, especially for households using over 5,000 gallons per month.
Pressure tank service. Tanks last 8 to 15 years and cost $400 to $800 to replace. Amortized, that is maybe $50 a year.
Pump replacement. The big one. Submersible pumps in deep wells run $2,500 to $6,000 installed. Shallow well pumps are cheaper. Replacement every 15 to 25 years averages out to $150 to $400 per year if you set money aside.
Water softener and treatment. Most Colorado wells benefit from a water softener for hardness, and many need iron filters or UV treatment. Initial install $1,500 to $4,000, ongoing salt and filters $100 to $300 per year.
Worst-case scenarios. Drilling a new well or deepening an existing one can run $15,000 to $50,000 in the Front Range, depending on depth and geology. This is the kind of expense that wipes out emergency funds. Some homeowners carry a separate sinking fund specifically for well replacement.
One more thing on insurance. Most standard homeowners policies cover the well pump and equipment under the same theft and damage clauses as other home systems, but coverage is not automatic. Pull out your declaration page and confirm. Some carriers explicitly exclude well equipment and require a rider.
Questions to ask the seller before you go under contract
Sellers are required to disclose what they know in Colorado, but the standard disclosure form does not always go deep enough on wells. Add these to your buyer’s agent’s checklist:
When was the pump last serviced or replaced?
Has the well ever run dry, even temporarily during dry summers?
What is the recharge rate, if known? How quickly does the well recover after sustained use?
Are there documented production records from the original drilling?
Is the well shared with neighbors? If so, can I see the shared well agreement?
Are there any active or expired complaints with the Division of Water Resources?
What treatment systems are currently in use, and when were filters last changed?
Where is the well head physically located, and is it properly capped and protected from surface contamination?
If you are looking at homes in Parker’s rural eastern edges, Franktown, Elizabeth, Castle Rock’s outer areas, Sedalia, Larkspur, or anywhere in Elbert County, well water is part of the conversation. I work with buyers in these areas often, and the homes are wonderful, but the diligence checklist is genuinely different from a city-water home. If you want to talk through whether a specific property looks good or has flags worth investigating, I am happy to do a permit lookup and a quick read on the area’s typical water issues. That phone call is free and it can save you tens of thousands.
Prerna Kapoor | REALTOR® | Luxury Home Specialist
REAL Brokerage | 720-949-5450 | info@prernakapoor.com
CLHMS • RENE • PSA • ABR | International Sterling Society Award Winner
Prerna specializes in residential real estate across Parker, Aurora, Lone Tree, Castle Pines, Highlands Ranch, Cherry Creek, Greenwood Village, and Centennial. She speaks English, Japanese, and Hindi.
