As part of its responsibilities under the Safe Drinking Water Act (SDWA), the U.S. Environmental Protection Agency (EPA) implements Section 1445(a)(2), Monitoring Program for Unregulated Contaminants. SDWA requires that once every five years, EPA issue a list of priority unregulated contaminants to be monitored by certain public water systems across States, Tribes, and Territories. These contaminants may be present in drinking water but are not yet subject to EPA drinking water standards.


In March 2023, the EPA proposed standards to limit certain PFAS in drinking water that would allow PWSs to use results from UCMR 5 to meet the rule’s initial monitoring requirements. In the interim period before the PFAS drinking water standard is final, the EPA has provided health advisories for four PFAS included in UCMR 5 monitoring. The agency continues to advance the science on the potential health effects of a wide range of PFAS, including many of those monitored for under this program.


This monitoring rule includes PFAS (Per- and polyfluorakyl substances), a group of man-made chemicals manufactured and used in various industries for more than 70 years. Like many communities throughout the nation, trace amounts of PFAS have been found in Crescenta Valley Water District's (CVWD's) water. Your water meets all State and Federal drinking water health standards, inculding the US EPA's new standards on PFAS. 


CVWD has been proactively testing and operating the system to ensure that water provided meets all state and federal regulations, including PFAS. The UCMR 5 analytical results are publicly available through the UCMR 5 Data Finder.


Learn more about PFAS from the EPA here. If you have any questions, please reach out to CVWD by calling (818)248-3925 or emailing customerservice@cvwd.com.