Well Water Test Kits
Private wells are not regulated by EPA, so testing is the owner's job. EPA and CDC recommend testing at least once a year for total coliform bacteria, nitrates, total dissolved solids and pH, and more often after flooding, well repairs or changes in taste, color or smell. A certified lab panel is the most reliable choice.
What to compare
- Lab vs home kit: lab panels report exact values. Home kits screen for bacteria, nitrates, hardness and iron.
- Panel contents: add arsenic, uranium, manganese or radon if local geology suggests it.
- Sampling rules: bacteria samples often must reach the lab within 24 to 30 hours.
- Certified labs: your state health department lists accredited labs.
- Results guidance: look for reports that compare results against EPA standards and suggest treatment.
Once you know the results, compare Whole House Water Filters for Well Water, UV Water Sterilizers and Water Softeners for Well Water.
FAQs
What should I test my well water for?
At least yearly for total coliform bacteria, nitrates, total dissolved solids and pH, as EPA and CDC recommend. Depending on your area, also test for arsenic, uranium, radon, manganese, iron, hardness, lead and PFAS. Your local health department can tell you which contaminants are common nearby.
Are home well water test kits reliable?
Home kits are useful for screening, for example a quick check for bacteria or nitrates after a storm. For decisions about treatment or health, a certified laboratory test is more reliable and reports exact levels. Many mail-in kits combine at-home sampling with certified lab analysis.
How often should a private well be tested?
At least once a year for bacteria, nitrates, TDS and pH. Test again after flooding, well repairs, nearby construction or chemical spills, or when taste, odor or color changes. Households with infants, pregnant women or older adults may want more frequent testing for nitrates and bacteria.