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This iron water test measures the total iron in your well or tap water, in milligrams per liter, and compares it with the EPA guideline of 0.3 mg/L. Iron is behind most orange stains, metallic taste, and rusty buildup in fixtures. Well owners order it most, especially before buying an iron filter or softener, or when an existing system no longer seems to keep up.
A number from our lab takes the guesswork out of choosing equipment. Iron levels vary a lot from well to well, and a system sized for the wrong range can clog quickly or miss the problem. Testing before you buy, or when an existing system seems to be losing ground, gives you and your installer a clear starting point and a way to measure the result afterward.
Iron is one of the most common metals in well water. It shows up as dissolved iron you cannot see, or as reddish particles that form once dissolved iron meets air.
Here is where it usually comes from:
Iron is mainly a taste, staining, and plumbing concern. The EPA secondary drinking water standards page covers it with other nuisance minerals, and many people add our Manganese Water Test, since the two travel together.
Rust-colored stains on your toilet, tub, sink, or laundry are the most common reason people order this test. A metallic taste, orange sediment in a glass that sits out, or a water heater that keeps filling with reddish grit point the same way.
Your water can also look perfectly clear and still carry iron. Dissolved iron, sometimes called clear water iron, only turns reddish brown after it meets air or heat, so stains can appear even when a fresh glass looks fine.
This test is a good fit before you buy an iron filter or softener, when an existing system seems to have stopped working, or when you are buying a home on a well. If you also see slimy reddish buildup in your toilet tank, ask us about testing for iron bacteria.
Shipping is an $8 flat rate for this kit, or free on orders of $100 or more. Every kit includes a prepaid return label. Please collect and ship as soon as possible after sampling. Adding a manganese or hardness test to the same order is a common way to reach free shipping.
We analyze your sample in our accredited lab, using established testing methods and quality controls.
We have tested water since 1995.
Every test includes a free consultation with one of our water experts. We go over your results with you, explain what the numbers mean for your home, and help you decide on the appropriate next step, including any filtration approach.

Ships free to your door

Takes under 5 minutes

Free return shipping

Expert Consultation

Ships free to your door

Takes under 5 minutes

Free return shipping

Expert Consultation
Every test comes with step-by-step instructions on how to prepare your water source, collect your water sample, and prepare your sample for return shipment to our lab.
The appropriate sample containers are provided with sterility and sample volume requirements taken into consideration.
A short form to fill out with basic information about your water source. This helps our lab technicians process your results accurately.
A pre-paid return shipping label is included — just drop the sealed package in any mailbox or hand it to your mail carrier. No extra cost.
“The test was simple—collect a water sample from a faucet in the home. We sent the test to the lab and received a water quality analysis within a few days. The test included analysis of the water sample for the presence of: coliform bacteria, E. coli, iron, lead, pH, turbidity, and nitrates/nitrites.”
Taylor L.
“Incredible lab, they really care about their customers. As someone who doesn’t know a whole lot about water quality, they took their time to help me understand everything about my water quality situation.”
Brad R.
“I’ve used ETR for several tests, both water and air. The test kits are easy to understand and the reports are very comprehensive. But what really makes them stand out is their quality of service. There is a lot of terminology in these reports that I don’t understand, but their staff is very knowledgeable and always available to assist. They really take their time to review the results with you on the phone, and answer any questions you may have.”
John T.
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We run every test inside our own lab in Leominster, Massachusetts. Your results come straight from us, not a subcontractor. That keeps our pricing fair and our quality consistent across every kit we send out.
Most labs stop at handing you a report. We do not. Every result comes with a free call to one of our water quality experts, so you understand what your numbers mean and what to do next.
ETR Laboratories has run water tests for over 30 years. We hold membership in the national Water Quality Association and the Massachusetts Ground Water Association.
Our reviews reflect the work we do. We hold a 4.8 out of 5 rating on Google, a 4.8 out of 5 rating on Angi from 342 reviews, and five-star ratings on Trustpilot.

Our Premium Water Test screens your water for 113 substances in one round, including bacteria, radon, heavy metals, and industrial chemicals, providing homeowners and landlords with a thorough assessment for peace of mind. We have run…
At typical levels, iron is mostly a taste and staining problem rather than a health risk. Your body needs some iron, and the bulk of it comes from food. Very high levels over many years may be a concern for people with hemochromatosis, a condition that causes the body to store too much iron. For everyone else, the main costs are stained fixtures and worn equipment.
The EPA secondary guideline for iron is 0.3 mg/L, a non-enforceable level set for taste and staining rather than health. Above it, many households start to notice orange stains and a metallic taste. At 3 mg/L (3 ppm), ten times the guideline, heavy staining and fast buildup in pipes and appliances are likely. No federal health limit exists for iron in drinking water.
Not reliably. Pitcher filters like Brita are mainly built to reduce chlorine taste and some metals, and they are not designed for the iron levels common in well water. Heavy iron can also clog the cartridge quickly. For iron above the EPA guideline, our free consultation helps you decide on the appropriate filtration approach for your lab result.
The right method depends on how much iron you have and the rest of your water chemistry, such as pH and manganese. Several treatment approaches exist, and each suits a different range. Our lab result gives you the number to start from, and our free consultation helps you decide on the appropriate filtration approach for your water.
Yes, in most cases. Iron and manganese come from similar rock, behave alike in groundwater, and often show up together in the same well. Manganese leaves darker brown or black stains and can be harder to remove, so knowing both numbers helps you choose a filter that handles each one. Testing them together also saves you a second round of sampling.
It can, over time. Iron particles settle in water heaters, pressure tanks, and well screens, and that buildup can reduce flow and shorten equipment life. Dishwashers and washing machines may also show orange staining inside. Iron can feed iron bacteria too, which leave a slimy reddish film. Knowing your level helps you decide how soon to deal with it.
Iron is far more common in well water. Utilities usually remove it at the treatment plant, while a private well delivers whatever the surrounding rock adds. City water can still pick up iron from old cast iron mains, and you may see brown or orange water for a short time after hydrant flushing or a main break. That kind usually clears after running the cold tap. Discoloration that keeps coming back in a city home is worth a test and a call to your utility.
Every year or two is a good rhythm if you have an iron filter or softener, since a yearly result shows whether the system is still keeping up. Test sooner if orange stains return, the taste changes, or the system needs new media. Iron levels can also shift after drought, heavy rain, or well work. Testing before and after any new equipment gives you a clear baseline and a way to judge whether the change worked.
No shared results. Our laboratory holds our clients privacy to the highest regard, your results and information will never be shared. Be aware that state certified laboratories may be required to report your results to various government agencies.