Have a question about your test results, a suggestion for a guide, or found something that needs correcting?
If the decoder gave you unexpected results or you need help interpreting a specific reading, email us with your values and we'll help explain them.
We strive for accuracy. If you spot an error or outdated information, please let us know.
Please note: We are not licensed water treatment professionals and cannot provide site-specific treatment recommendations or diagnose contamination sources remotely. For serious contamination issues, contact your county health department or a licensed water treatment professional.