Report language
Reports may list nitrate as nitrate, nitrate as nitrogen, or nitrate/nitrite depending on the table.
Inorganic chemicals
Nitrate in water reports
Nitrate may appear in reports when source water is influenced by fertilizer, septic systems, or other nitrogen sources.
Quick answer
Seeing nitrate in a report does not by itself explain current household water conditions. Check the report year, units, official limit language, and any current notices.
How it appears in reports
Legal limit and guidance note
Use the official report and current EPA/state standards when comparing reported levels.
Official sources
What to check next
How to read a water quality report
A plain-English walkthrough of Consumer Confidence Reports, including report years, detected contaminants, legal limits, violations, and source notes.
Find My Water System
Confirm which public water system serves your address or account.
Data methodology
See how source hierarchy and limitations should be handled.