Private Well Owner Resource
Your Well.
Your Water.
Know What’s In It.
Clear, practical guidance for the 23 million U.S. households on private wells—from first-time buyers to longtime owners. Testing, state regulations, loan requirements, and maintenance in one place.
⚠ Buying a Home with a Well?
FHA, VA, and USDA loans all require water quality testing. Most buyers don’t know what’s required—or how long results are valid. Get the complete breakdown →
Testing & Lab Results
Understand What’s in Your Water
Private well water is not tested or treated by a municipality. What’s in your water depends entirely on your local geology, land use, and well condition—and you won’t know until you test.
How to Read Your Test Results
Lab reports list dozens of parameters. This guide explains exactly what each number means and what to do if any value is outside the acceptable range.
Read the guide →Failed Coliform Test—What to Do
A positive coliform result means bacteria are present in your well. Here’s the step-by-step response: shock chlorination, re-testing timeline, and what to tell your lender.
See the steps →How Often Should You Test?
Annual testing is the baseline, but location, recent flooding, nearby agriculture, and well age all change what you need to test and how frequently.
See the schedule →What Contaminants Are in Well Water?
Bacteria, nitrates, arsenic, lead, radon, manganese, iron—the contaminants present depend entirely on your geography. Learn what’s common in your region.
See contaminants →How to Collect a Well Water Sample
An improperly collected sample produces invalid results. Follow the lab’s protocol exactly—this guide walks you through every step including container prep and cold storage.
See the steps →Find a State-Certified Testing Lab
For results accepted by lenders, health departments, and courts, you need a lab that holds your state’s NELAP or equivalent certification. Here’s how to find one.
Find a lab →🧪 Free Well Water Test Result Interpreter
Enter your lab report values and get instant plain-language explanations for every parameter—including FHA, VA, and USDA standards.
Buying & Selling
Navigating a Home Sale with a Private Well
Whether you’re a buyer, seller, or real estate agent, well water requirements can delay or kill a closing. Know exactly what’s required before you write the offer.
Does Well Water Need to Be Tested Before Closing?
The answer depends on your loan type and state. FHA, VA, and USDA loans all have mandatory requirements. Conventional and cash purchases vary by state.
Get the full breakdown →How Long Is a Well Water Test Valid?
VA: 90 days from certification. FHA: depends on local authority (typically 90–180 days). USDA: 180 days. Conventional: check state law. Details inside.
See expiration rules →FHA Well Water Requirements Explained
FHA requires a water quality test whenever the well is within 100 feet of a septic tank or 300 feet of a fuel tank. Here are all the rules, clearly explained.
FHA rules →VA Loan Well Water Requirements
VA loans always require a water quality test when the property has a private well. Learn exactly what VA requires, who pays, and what happens if results fail.
VA rules →USDA Loan Well Water Requirements
USDA Rural Development loans require testing for coliform, nitrates, and any local contaminants of concern. Results are valid for 180 days.
USDA rules →Buyer’s Complete Well Checklist
Don’t skip the well inspection. This checklist covers everything a buyer should ask for: inspection records, pump age, water rights, treatment systems, and test history.
Get the checklist →By State
Well Water Requirements Vary Significantly by State
Some states require testing at point of sale. Others have no requirement at all. Several require specific contaminant tests based on local geology. Find yours.
Maintenance & Seasonal Care
Keep Your Well Healthy Year-Round
Private wells require annual maintenance. Most problems—pump failure, bacterial contamination, pressure loss—are preventable with a consistent inspection routine.
Annual Well Maintenance Checklist
Twelve things every well owner should do each year, from inspecting the wellhead to checking electrical connections and scheduling a professional pump inspection.
Get the checklist →Spring Startup After Winter
If your well was idle or frozen over winter, a proper spring startup prevents contamination. Includes flushing protocol, inspection points, and when to test.
Spring startup guide →Winterizing Your Well
Pipes exposed to freezing temperatures can crack your pressure tank, damage your pump, and contaminate your water supply. Winterize before the first hard freeze.
Winterizing guide →What to Do After Flooding Near Your Well
Floodwater can introduce bacteria, chemicals, and debris into your well casing. Do not use the water until you’ve followed the shock chlorination and re-testing protocol.
Post-flood guide →Free Download: The Private Well Owner’s Annual Checklist
A print-ready 2-page PDF covering annual testing, seasonal maintenance, signs of trouble, and a log to track your test results year over year.
Water Treatment
When Your Well Water Needs Treatment
Not every contamination finding requires an expensive system. Match the treatment to the specific problem. The right solution depends on what’s in your water.
How to Shock Chlorinate a Well
Shock chlorination is the first response to a positive coliform or bacteria test. Step-by-step instructions for treatment, waiting period, and confirmation testing.
Shock chlorination guide →UV Treatment for Well Bacteria
Ultraviolet disinfection is the cleanest long-term solution for recurring bacterial contamination. No chemicals, no byproducts—but it only works if your water is clear.
UV treatment explained →Whole-House Filtration for Well Water
Well water often contains iron, manganese, sediment, and hardness that damages appliances and stains fixtures. A whole-house system addresses all of these at the point of entry.
Filtration guide →