An official website of the United States government.

Monitoring Unregulated Drinking Water Contaminants

Unregulated Contaminant Monitoring Rule (UCMR) Meetings and Materials

UCMR 5 meetings

UCMR 5 proposal public webinars – April 2021

EPA will host two identical virtual meetings (via webinar) on April 6 and 7,  2021, to discuss the proposed UCMR 5. The meeting scope will include proposed monitoring requirements, analyte selection, analytical methods, laboratory approval process, and ground water representative monitoring plans (GWRMPs). EPA will provide additional information once the proposal is published in the Federal Register. Please see the Federal Register Notice on UCMR 5 for more details.

40 CFR (Code of Federal Regulations, Title 40) Part 141: Proposal - Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems and Announcement of a Public Meeting (PDF)(27 pp, 440 K, About PDF)

Please only register for one webinar meeting.

To ensure adequate time for public statements, individuals or organizations interested in making a statement should identify their interest when they register. We ask that only one person present on behalf of a group or organization, and that the presentation be limited to ten minutes. Any additional statements from participants will be taken during the meeting if time permits. Formal comments must be submitted to the docket. The number of webinar connections available for the meeting is limited and will be available on a first-come, first-served basis. If stakeholder interest results in exceeding the maximum number of available connections for participants in the first two webinar offerings, EPA may schedule additional webinars, with dates and times posted on this page.

Approach to UCMR 5 - July 2019

EPA hosted a public meeting and webinar in July 2019 in Cincinnati, Ohio to discuss potential approaches to developing the proposal for UCMR 5 and allow for early stakeholder engagement.

40 CFR (Code of Federal Regulations, Title 40) Part 141 - Public Meeting and Webinar: Development of the Fifth Proposed Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems (PDF)(2 pp, 253 K, About PDF)

UCMR 4 meetings

UCMR 4 training webinars for the Safe Drinking Water Accession and Review System (SDWARS) – November 2017

EPA hosted two webinars in November 2017 to provide step-by-step instructions on how to use SDWARS 4 for public water systems (PWS) and laboratories. Along with a general introduction to the UCMR program, EPA discussed how PWS’s can add contacts and nominate users, edit schedules, add and edit inventory, input additional data elements, and review analytical results. EPA also discussed how laboratories can register their client list, review inventory and schedule of clients, upload files, enter and review data, and nominate users.

UCMR 4 public meeting and webinar for the final rule – April 2017

EPA hosted a public meeting and webinar in April 2017 in Washington, DC to present a comprehensive overview of the UCMR 4 program for public water systems (PWSs), states, laboratories, and other stakeholders. Along with a general introduction to the UCMR program, EPA discussed the contaminants to be monitored, those PWSs subject to UCMR 4, the monitoring and reporting requirements, and the laboratory approval process.

Federal Register Notice: Final - Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 4) for Public Water Systems and Announcement of a Public Meeting

UCMR 4 webinar for proposal - January 2016

EPA hosted a webinar in January 2016 to discuss the proposed UCMR 4 monitoring requirements, analyte selection and rationales, analytical methods, laboratory approval process and other aspects of the proposed rule.

Federal Register Notice: Proposal - Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 4) for Public Water Systems and Announcement of a Public Meeting

Approach to UCMR 4  - June 2014

EPA hosted a public meeting and webinar in June 2014 in Arlington, Virginia, to discuss the anticipated approach to UCMR 4 for public drinking water systems and allow for early stakeholder engagement.

Federal Register Notice of Public Meeting and Webinar: Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 4)

Methods in development - May 2013

EPA hosted a public meeting and webinar in May 2013 in Cincinnati, Ohio, to describe methods in development for Contaminant Candidate List (CCL) analytes and other priority contaminants.

Federal Register Notice of Public Meeting and Webinar: EPA Method Development Update on Drinking Water Testing Methods for Contaminant Candidate List analytes

Top of Page