Private Well Problems: Selling a Home With Bad Water in Connecticut

Private Well Problems: Selling a Home With Bad Water in Connecticut

About 837,000 Connecticut residents, roughly 23% of the state, get their drinking water from a private well. That's around 342,000 residential wells, according to the state Department of Public Health. Unlike a town water system, nobody tests those wells on a schedule. The owner is responsible, and many owners haven't tested in years, sometimes ever.

So it's common for Connecticut sellers to learn about a water problem from the buyer's lab report: coliform bacteria, arsenic, uranium or radon above recommended levels. The good news is that most of these problems are treatable, and Connecticut law doesn't make a failed test a legal barrier to selling. This post covers what the state actually requires, the contaminants that show up most often, and how to handle a bad result without losing the sale.

What Connecticut law actually requires when you sell

Connecticut's rule is lighter than many sellers expect. Under CGS 19a-37, before a sale, exchange, transfer or rental, the owner must give the buyer or tenant notice that DPH educational material on private well testing is available. That's the requirement. There's no mandatory water test at sale.

A few related points:

• Since October 1, 2022, new wells must be tested, and labs must now report all private-well results to the local health department and DPH within 30 days. (Before that, only real-estate-related results were reported.) Test results from your sale are reported to your local health department and DPH.
• The state's mandatory disclosure report asks about well and water problems. If you know about a problem, it goes on the form. Not providing the form triggers a $500 credit to the buyer.
• The EPA does not regulate private wells. Local health departments approve well siting and construction, and owners handle testing and maintenance.

This is where Connecticut differs sharply from its neighbor. New Jersey's Private Well Testing Act requires a well test whenever a property with a private well is sold, and closing can't happen until both buyer and seller have received and certified review of the results. If you've heard "you have to test the well before you close," that's likely New Jersey. In New York, there's no statewide sale test, but Westchester County requires a seller-paid test after contract signing. Florida has no statewide at-sale requirement; testing there is lender-driven, as it is in Connecticut.

Why the well gets tested anyway

Even without a legal requirement, most Connecticut buyers test the water during the inspection period, and many lenders ask for a potability test. FHA no longer requires a well test in every case, but it does require one when the appraiser can't confirm the well meets minimum property requirements. FHA also sets distance rules between a well and a septic system: 50 feet from the septic tank and 100 feet from the drain field (possibly reduced to 75 feet where local authority allows).

That setback rule is why well and septic problems so often show up together on older rural lots. If your septic is also struggling, our guide to selling a property with a failed septic system covers that side.

The contaminants that show up most in Connecticut wells

• Arsenic and uranium. These occur naturally in Connecticut bedrock. USGS sampling from 2013 to 2018 estimated that about 3.9% of CT private wells exceed the EPA limit for arsenic and about 4.7% exceed the limit for uranium. Those are estimates from a weighted sample, but they tell you this isn't rare.
• Radon in water. CT DPH uses an action level of 5,000 pCi/L for radon in well water. Radon in water is a separate issue from radon in the air of your basement, though they often come up together; see our guide to radon for New Jersey and Connecticut sellers.
• Bacteria (total coliform, E. coli), nitrates, iron and manganese, and sodium and chloride from road salt.
• PFAS, mainly near known contamination sites. For context, the EPA set drinking-water limits of 4.0 parts per trillion for PFOA and PFOS in 2024 and later extended the compliance deadline to 2031 while rescinding limits for several other PFAS compounds. Those federal limits apply to public water systems, not private wells, but labs and buyers use them as benchmarks.

How to handle a failed water test

Most failed tests have a known fix. Ultraviolet treatment handles bacteria. Filtration, ion exchange or reverse osmosis systems address arsenic and uranium. Aeration systems remove radon from water. Whole-house point-of-entry systems cover several issues at once. In the worst cases, the answer is a new well or a connection to public water, where it's available.

As a rough guide, a UV system for bacteria alone often runs $700 to $2,000 installed, iron or sulfur filtration adds $900 to $4,000, and a combination system addressing several issues at once can run $2,500 to $10,000 or more. Get a quote from a water treatment contractor before you negotiate — the real cost depends on which contaminants you're treating. Once you have a number, sellers usually take one of these routes:

• Install treatment before or during the sale and provide a clean re-test. This gives financed buyers the most comfort.
• Offer a credit for the buyer to install the system after closing. Who pays for testing and treatment is negotiable in Connecticut.
• Sell as-is to a buyer who prices in the fix and doesn't need a lender's sign-off on the water.

Water issues are especially common in older inherited rural homes, where nobody has tested in decades. If that's your situation, our post on Connecticut probate and inherited home sales covers the estate side of the process.

Frequently Asked Questions

Does Connecticut require a water test to sell a house with a well?

No. You must notify the buyer that state educational material on well testing is available. Most buyers, and many lenders, will still ask for a water test.

Can I sell my Connecticut house if the well water fails?

Yes. You'll need to disclose known problems, and most issues (bacteria, arsenic, uranium, radon) can be treated. Buyers typically negotiate for a treatment system or a credit.

Who pays for the well test in Connecticut?

It's negotiable. The buyer usually tests during the inspection period. In New Jersey, testing is legally required at sale, but who pays is still negotiated there too.

What are the most common well contaminants in Connecticut?

Bacteria, naturally occurring arsenic and uranium from bedrock, radon in water, nitrates, iron and manganese, and road-salt sodium and chloride. PFAS is a concern near specific contamination sites.

What a Buyer Needs From You Next

A buyer looking at a failed lab report wants three things: to know what's in the water, to know it can be fixed, and to know what the fix costs. If you can give them a clear test, a treatment quote and an honest disclosure, a bad water result becomes one more line in the negotiation instead of the reason the deal ends.

At Bluebird Acquisition, we buy Connecticut homes with failed well tests (bacteria, arsenic, uranium, radon or PFAS) as-is. You don't need to install a treatment system, drill a new well or produce a clean re-test before closing. We factor the water into a cash offer and handle the fix ourselves after we buy.

📞 Call or text us directly at 217-408-2781

🌐 bluebirdacquisition.com

This article is general information, not legal, financial, or tax advice. Laws, processes, and programs vary by state — consult a licensed attorney, CPA, or financial advisor before making decisions about a specific property.