If your home gets its water from a private well, you're the one responsible for making sure that water is safe. There's no utility testing it for you or sending you an annual water quality report. That leaves a lot of Bucks County and Greater Philadelphia homeowners wondering how often they should actually test their well water and what they should be testing for. Here's what our team at EPA Water Consultants recommends, based on guidance from the U.S. Environmental Protection Agency and other public health authorities.
How Often Should You Test Your Well Water?
The U.S. Environmental Protection Agency recommends that private well owners test their water at least once a year. An annual test gives you a baseline, helps you spot changes over time, and lets you catch problems before anyone in your household drinks contaminated water.
Once a year is the minimum, though. There are times when you should test sooner, which we'll cover below. Think of the yearly test as your routine checkup and the extra tests as the visits you schedule when something seems off.
Who Is Responsible for Testing a Private Well in Pennsylvania?
You are. Public water systems are regulated under the Safe Drinking Water Act, but those rules don't cover private household wells. The Pennsylvania Department of Environmental Protection doesn't regulate private wells either, and according to Penn State Extension, there are no statewide regulations requiring private well owners to maintain their wells or test their water. That means testing is up to you, whether your well is brand new or has served your family for decades.
This is a big reason we encourage well owners in Newtown, Doylestown, New Hope, Quakertown, and surrounding communities to put well testing on their calendar every year, just like changing smoke detector batteries.
What Should You Test Your Well Water For Each Year?
The EPA recommends testing private wells every year for:
- Total coliform bacteria: Coliform bacteria are an indicator that disease-causing organisms could be getting into your water. A positive result means your well needs attention.
- Nitrates: Nitrates can come from fertilizers, septic systems, and animal waste. They're a particular concern for households with infants.
- Total dissolved solids (TDS): TDS measures the overall amount of minerals, salts, and other substances dissolved in your water.
- pH: pH tells you whether your water is acidic or alkaline. Acidic water can corrode plumbing and fixtures over time.
Depending on where you live and what you notice in your water, it may also make sense to test for hardness, iron, manganese, arsenic, lead, PFAS, or radon. Homes near farmland, for example, may want to pay closer attention to nitrates and bacteria. We explain why in our article on the effects of farming on well water.
When Should You Test Your Well Water More Than Once a Year?
Certain situations call for testing right away instead of waiting for your yearly test. Public health agencies, including the EPA and the Centers for Disease Control and Prevention, recommend testing when:
- Your water changes. A new taste, odor, color, or cloudiness is worth investigating.
- Flooding occurs near your well. Floodwater can carry bacteria and other contaminants into a well, especially one with a damaged cap or casing.
- You've had work done on your well. Repairs, a new pump, or other work on the well system can introduce bacteria.
- Your septic system has problems. A failing septic system nearby can affect groundwater.
- Someone in your home is pregnant or you have an infant. Nitrate levels are especially important to know in these situations.
- Family members have recurring stomach illness. If people in your home keep getting sick and there's no clear explanation, test your water.
- Land use nearby changes. New construction, agriculture, or other activities close to your property can affect groundwater quality.
What Are the Signs Your Well Water Needs Testing?
Some water problems you can see, smell, or taste. Others, like bacteria and nitrates, give no warning at all, which is why routine testing matters. Still, these signs are a good reason to schedule a test sooner rather than later:
- A rotten egg smell
- Rust-colored or brown staining on fixtures and laundry
- Blue or green stains in sinks and tubs
- Spots on glassware and scale on faucets
- Cloudy water or visible sediment
- A metallic or otherwise unpleasant taste
Hard water is one of the most common issues we see, and it shows up as spots, scale, and dry skin. If you're curious about the basics, C-Tech Water has a helpful explainer on the difference between hard water and soft water.
Does Testing Replace Regular Well Maintenance?
No. Testing tells you what's in your water, but your well itself also needs regular care. Keeping the area around your wellhead clear, making sure the well cap is secure, and having the well system inspected can help prevent contamination in the first place. For a closer look at the upkeep a private well needs, Rowan Well Drilling outlines what maintenance is required for a well, including how often it should happen.
What Does a Well Water Test From EPA Water Consultants Include?
Our water testing service starts with a free on-site test at your home. One of our technicians visits your house and tests your water for:
- Hardness
- pH
- Total dissolved solids (TDS)
- Chlorine
We'll walk you through what each reading means for your home. If you need to test for parameters the on-site check doesn't cover, such as PFAS, arsenic, radon, lead, or iron, we can collect a sample at your home and deliver it to a PA-accredited laboratory. There's no need to track down a third-party lab yourself. Specialized laboratory testing carries an additional fee based on current lab rates. Once the results come back, we follow up with your detailed results and treatment recommendations based on what your water actually needs.
What If Your Well Water Test Shows a Problem?
Don't panic. Most well water problems can be treated once you know what you're dealing with. The right solution depends on your results:
- Bacteria: An ultraviolet water treatment system destroys bacteria, viruses, and other microorganisms without adding chemicals to your water.
- Hardness: A water softener removes the calcium and magnesium that cause spots and scale.
- Iron, sediment, or odors: Whole-house filtration can address issues that affect every tap in your home.
- Drinking water concerns: A reverse osmosis system can reduce a wide range of contaminants at the kitchen tap.
If your test shows bacteria, follow the guidance of your local health department and avoid drinking the water until the issue has been addressed.
Where Can You Get Your Well Water Tested Near Philadelphia and Newtown?
EPA Water Consultants is a locally owned water treatment company serving homeowners across Bucks, Montgomery, Chester, Lehigh, Philadelphia, and Delaware Counties. As WQA members, we're committed to helping families understand their water and choose treatment that fits their needs. If it's been more than a year since your last well water test, or if you've noticed changes in your water, schedule your free water test today or call us at 215-529-5544.