Unregulated Contaminant Monitoring Rule
What is the Unregulated Contaminant Monitoring Rule?
The Unregulated Contaminant Monitoring Rule (UCMR) provides EPA and
other interested parties with scientifically valid data on the
occurrence of contaminants suspected to be present in drinking water,
but that do not have health-based standards set under the Safe Drinking
Water Act (SDWA). The data serves as a primary source of occurrence and
exposure information that EPA uses to develop regulatory decisions. The
final rule “Revisions to the Unregulated Contaminant Monitoring Rule
(UCMR3) for Public Water Systems” was published in the Federal Register
on May 2, 2012. The UCMR 3 contaminant list includes 28 chemicals and
two viruses. The Florida Department of Environmental Protection and
Department of Health will not be involved in the implementation of this
rule, therefore Florida water systems will deal directly with US EPA
Who Will Be Required to Monitor?
Participation is based on retail population served for community
water systems and non-transient non-community water systems. Screening
Survey monitoring will be conducted by all systems serving more than
100,000 people; 320 randomly selected systems serving 10,001 to 100,000;
and 480 randomly selected systems serving 10,000 or fewer.
When Will Systems Be Required to Monitor?
Participating systems will be required to monitor for one consecutive
12-month period during January 2013 – December 2015 (monitoring can span
more than one calendar year, as long as conducted during a consecutive