Analytical Chemistry

UCMR 4

The State Hygienic Laboratory (SHL) is implementing and seeking approval by the U.S. EPA to perform EPA-developed test methods for the Unregulated Contaminant Monitoring Rule 4 (UCMR 4) program.

Those methods include:

• Alcohols by EPA 541
• Bromide by EPA 300.0 or 300.01
• Haloacetic Compounds by EPA 552.3
• Metals: Germanium & Manganese by EPA 200.8
• Pesticides & Pesticide Byproducts by EPA 525.3
• Semi-Volatile Compounds by EPA 530
• Total Organic Carbon by SM 5310B
• Total Microcystins by ELISA using EPA 546
• Microcystins by EPA 544 (to be sub-contracted to an EPA-approved laboratory)
• Anatoxin-a & Cylindrospermopsin by EPA 545

In accordance with EPA’s schedule, the SHL will have the approval in place well before UCMR 4 sampling is required. The sampling program is scheduled to begin in January 2018 and end in December 2020. The SHL will automatically upload all UCMR data directly into the EPA CDX SDWARS in accordance with EPA requirements. A copy of the testing results report will be provided to each client.

• Complete water testing for drinking water compliance as required by the EPA’s Safe Drinking Water Act (SDWA).
• Automatic notification of exceedances immediately following second level QC review, before final report generation.
• 24/7 access to your data via SHL’s password-protected website.

All large Public Water Supplies (PWS) serving 10,000 or more people are required to participate. EPA will also randomly select 800 small PWSs (serving <10,000 people) to participate and will pay the costs associated with monitoring at small systems.