Well Water Testing Cost: Lab Prices and What to Order

At three public labs in Pennsylvania, Wisconsin and Vermont, common single tests (bacteria, nitrate, hardness, iron, manganese, lead, arsenic) cost $14 to $46, and packages cost $60 to $450 depending on what they cover. Penn State’s lab charges $60 for a basic package (checked Nov 1, 2026); the Wisconsin State Laboratory of Hygiene charges $450 for its full homeowner package (prices effective July 1, 2026). HomeGuide (April 2026) puts “A comprehensive well water test” at $100 to $500. Start with the yearly basics the CDC lists, then add the tests that match the equipment you’re considering.

How much well water testing costs

Prices from three public labs, as each lab lists them. Package contents differ, so compare line by line. These are examples from three states: use a lab certified in your own state.

Vermont says its individual tests for retesting “range in price from $10 to $25.” Its recommended Homeowner Testing Package is the three kits above: $14 + $100 + $45, or $159 by our sum. With a bacteria kit every year and the package every five years, as Vermont recommends, five years comes to about $215 (our sum).

What a consumer cost guide reports, for comparison (HomeGuide, April 2026):

Fixr (January 2025) also lists a “water well inspector” who will “test the water for hardness and mineral content, and provide you with a report”: “It costs an average of $300 to $500 to hire a water well inspector.”

Costs beyond the test fee. The Wisconsin lab ships kits free, “but you will have to pay for return shipment.” Penn State’s lab asks you to send the kit “by overnight mail,” and the bacteria sample must arrive “within 30 hours after sampling.” Some health departments test for less: EPA notes your local health department “may provide private well testing for free.”

Basic vs. comprehensive test packages

Penn State’s lab is a good example of how packages build on each other:

Wisconsin’s $450 Homeowner Package covers bacteria, nitrate and nitrite, fluoride, a metals screen, hardness, a VOC screen and an atrazine screen in five bottles. Its $146 HUD/FHA-VA Loan Package covers bacteria, lead and nitrate/nitrite, the tests the lab says HUD requires for FHA mortgage insurance, with the same requirements for VA loans; ask your lender what it requires.

Which tests to order before buying treatment

Match the test to the equipment you’re considering:

• Before a water softener: hardness, iron, manganese and pH. Penn State recommends softeners for iron removal generally only when “pH is greater than 6.7,” hardness is 3 to 20 gpg and dissolved iron is “less than 5 mg/L.” EPA’s well checklist pairs “Water softener needed to treat hardness” with “Manganese, iron.” Then size it with what size water softener do I need or the Water Check tool.
• Before an iron filter: iron and manganese, plus what Minnesota’s health department suggests: “hardness, pH, alkalinity, and iron bacteria.” See iron filter for well water.
• For a rotten-egg smell: hydrogen sulfide, which Penn State says “must be done in the home, or the sample must be chemically stabilized,” so ask the lab first. See sulfur smell in well water.
• For bacteria or UV disinfection: total coliform and E. coli, then talk to your health department before buying anything.

Penn State’s buying guide adds a warning about in-home dealer tests: “Confirm home water test results through an independent lab.” For a whole-house plan built from these results, see whole house water filter for well water.

State and university labs vs. private labs

What matters is certification, not who owns the lab. EPA: “Only use laboratories that are certified to do drinking water testing.” The CDC: “Use a state-certified laboratory to test your water.” Penn State’s lab is “accredited by the Pennsylvania Department of Environmental Protection for drinking water analysis,” and Vermont lets you order its package from the Health Department lab “or another certified drinking water lab.”

Minnesota’s health department “recommends contacting a few laboratories to compare costs.” Your state or county health department can give you the list of certified labs in your area.

How often to test a private well

The CDC also says to test if you “notice a change in your water’s taste, color, or smell,” after you “replace or repair any part of your well system,” if there’s flooding or land disturbance nearby, or if someone in the home becomes pregnant or a child starts living with you. It cautions that tests for other contaminants “can be expensive,” so start by asking your health department which ones matter locally.

If a result comes back high, the CDC says your local health or environmental department “can help you understand the test results and what to do next.”

This site doesn’t give medical advice. For health questions about your water, ask your state or local health department.