UCMR4 Analysis

Based on the Safe Drinking Water Act(SDWA) of 1996 amendments require the EPA to issue a new list of no more than 30 unregulated contaminants by be monitored every five years by public water systems.

To protect public health and provide safe drinking water, the EPA published the fourth Unregulated Contaminant Monitoring Rule (UCMR4) in the Federal Register on December 20, 2016.

With over 25 years of experience providing our clients with superior drinking water analysis, including past UCMR requirements, MAI is an excellent choice for your UCMR4 questions and testing needs.

McCampbell Analytical has received approval for testing to coincide with monitoring that will begin in 2018 and continue into 2020 using the following methods



10 Cyanotoxins



EPA 544

Total microcystin

Adda ELISA, EPA 546

Anatoxin & Cylindropermopsin                           

EPA 545

20 Additional Chemicals


Metals: Germanium & Manganese

EPA 200.8

Pesticides & pesticide byproduct

EPA 525.3


EPA 541


EPA 530

Brominated Haloacetics

EPA 552.3

Total organic carbon

SM 5310 B


EPA 300.1

You can view our EPA certification here.

For more information concerning the Fourth Unregulated Contaminant Monitoring Rule, please visit the EPA Website

Contact us for more information.

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UCMR4 Resources

The EPA will host webinars on November 6 and November 8, 2017 (the first for public water systems, the second for laboratories) to provide step-by-step instructions on how to use SDWARS 4.
You can find more information here...

Do you have questions about UCMR4 sampling techniques? The UCMR4 Sampling Procedures presentation will provide some helpful suggestions for sample collections. View the UCMR4 Sampling Procedures presentation here...

For complete sampling instructions, Click Here...

Did you miss the UCMR4 Public Stakeholder Meeting and Webinar on April 12,2017? Click Here for a summary of the questions that were asked during that meeting/webinar.


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