UCMR4 Testing

UCMR4 Testing | PDC Laboratories, Inc.

As of January 2018, the EPA's UCMR4 began requiring testing of water quality. PDC Labs is an EPA-approved, UCMR4-accredited water testing lab. Click below to find the location closest to you to schedule UCMR4 testing.

Our Locations: Schedule UCMR4 Testing

As part of the Safe Drinking Water Act (SDWA), the EPA requires periodic (5-year) monitoring of water quality from public water supply systems under the Unregulated Contaminant Monitoring Rule (UCMR). UCMR4 is the fourth cycle of monitoring. UCMR4's purpose is to learn if these thirty compounds occur at a frequency and concentration in public water supplies to warrant their further investigation, routine monitoring and further controls.

PDC Laboratories, Inc. is one of a few labs seeking approval for all 8 test methods. There's no better choice than PDC Laboratories, Inc. for UCMR4 testing.        

What is UCMR4 testing?

In UCMR testing, sampling occurs at a source water intake location, as well as at entry points to and certain points within the distribution system.

Only EPA-approved laboratories can analyze UCMR4 constituents, except for the DBP Indicators (TOC and Bromide). Even for those indicators, labs must provide the EPA with state certifications.

Who needs UCMR4 testing? 

The EPA requires that all community water systems serving more than 10,000 people, and a selected list of 800 small (systems that serve 25 – 10,000 people), participate in UCMR4. EPA is providing UCMR4 monitoring for all pre-selected small systems.

Important note: Large water systems who participated in UCMR3 will not be receiving letters from EPA but are still required to login to the CDX system and approve their monitoring plan and schedule.


UCMR4 Approved Labs

The EPA is very judicious regarding which labs it gives the approval to oversee UCMR4 testing. We are pleased to announce that PDC Laboratories, Inc. is one of the nationally approved water testing labs for this program.

PDC Labs has water testing labs in Illinois & Missouri. View our locations here.