Frequent Questions

The public notification requirements in 40 CFR 141.207 require community water systems and non-community water systems required to monitor under 141.40 (Unregulated Contaminant Monitoring Regulation or UCMR) to notify persons served by the system of the a

Water systems have 12 months to notify the public after all UCMR required sampling results are known.  The final Public Notification Rule changed the UCMR public notification requirement from three months to twelve months.  The change in the timing of the public notice is to allow water systems, at their option, to report the availability of all the results just once during the year.  Nothing precludes a water system from distributing notice of the availability of results of monitoring for unregulated contaminants sooner. (65 FR 25981, 26007; May 4, 2000)
Have more questions? Submit a request