Drinking water rules
What UCMR is
UCMR is the Unregulated Contaminant Monitoring Rule. EPA uses it to collect occurrence data for contaminants that do not yet have an MCL. A UCMR result is monitoring, not a violation of a federal MCL.
Short definition only
Which cycle applies, and what to file, confirm with your primacy agency. This page is the term, not a contaminant list.
Related source: 40 CFR Part 141.
The $199 Complete System Report is the cited document. Orevant Pro is $87/month or $870/year.
Orevant is not legal advice and does not report your system to the state.
FAQ
Does a UCMR detect mean I have an MCL violation?
No. UCMR is monitoring. An MCL is a different kind of duty.
Where do I start?
Check my system with your PWSID.