The results for Round 5 (concluded in 2023) of unregulated contaminates monitoring are provided below. Round 4 (concluded in 2019) is available online at https://mub.org/ccr2022/ucmr4. Round 3 (concluded in 2010) can be found at https://mub.org/ccr/ucmr3.

Unregulated contaminants are those that don't yet have a drinking water standard yet set by USEPA. The purpose of monitoring for these contaminants is to help EPA decide whether the contaminants should have a standard.

Please note that for Round 5, the abbreviation "<MRL” stands for less than minimum reporting level. This means that the sample result is below levels that current test methods can detect.