Well Water Test Interpreter
Enter your lab results — or upload your lab report and we’ll read it for you — and get a plain-English verdict on every parameter: what’s fine, what to watch, and what needs treatment. Benchmarked against EPA’s public-water-system standards, the best yardstick private wells have.
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Honest limits
- Not medical or lab advice. This tool benchmarks your results against EPA’s public-water-system standards. It’s a starting point for a conversation with your lab or a water-treatment pro — not a diagnosis.
- Private wells aren’t regulated. EPA’s limits legally apply to public water systems. For private wells they’re the best available yardstick — which is how we use them here.
- Detection limits. A “<” means your lab couldn’t see below that number. If that number sits above our OK line, we mark it “can’t judge” instead of guessing.
- Nitrate basis. Labs report nitrate two ways — “as nitrogen” or “as nitrate.” We convert automatically, but if your report doesn’t say which, double-check the number we used.
- Lead. EPA lowered the lead action level to 10 ppb (0.010 mg/L) in 2024. Older reports and articles may still say 15 ppb.
- Bacteria. A “present” coliform result means retest first to confirm, then act. Sampling mistakes cause false positives — that’s normal, not a failure.
Want the full explanation behind every line on your report? Read how to read your well water test results.