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Rule

Revisions to the Unregulated Contaminant Monitoring Regulation (UCMR 3) for Public Water Systems

This document is a correction of an document that was published on 05/02/2012. View Uncorrected Document

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Information about this document as published in the Federal Register.

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Correction

In rule document 2012-9978 appearing on pages 26072-26101 in the issue of Wednesday, May 2, 2012, make the following correction:

On pages 26072-26073, the table entitled “EXHIBIT 1—APPLICABILITY OF UCMR 3 TO WATER UTILITIES BY SYSTEM TYPE AND SIZE” should read as set forth below:

Exhibit 1—Applicability of UCMR 3 to Water Utilities by System Type and Size

System TypeSystem size1
Serving > 10,000Serving ≤ 10,000
UCMR 3 Assessment Monitoring
CWS & NTNCWSRequires all systems to monitor for List 1 chemicalsRequires 800 randomly selected systems to monitor for List 1 chemicals. EPA will pay for the analysis of samples.
TNCWSNo requirementsNo Requirements.
UCMR 3 Screening Survey
CWS & NTNCWSRequires all systems serving more than 100,000, and 320 randomly selected systems serving 10,001 to 100,000 to monitor for List 2 chemicalsRequires 480 randomly selected systems to monitor for List 2 chemicals. EPA will pay for the analysis of samples.
TNCWSNo requirementsNo Requirements.
UCMR 3 Pre-Screen Testing
CWS, TNCWS & NTNCWSNo requirementsRequires 800 randomly selected systems to permit EPA to sample and analyze List 3 microbes. The selected systems will be served by non-disinfecting ground water wells in vulnerable areas. EPA will pay for the analysis of samples.
1 Based on the retail population, as indicated by SDWIS/Fed on December 31, 2010.

[FR Doc. C1-2012-9978 Filed 6-29-12; 8:45 am]

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