U.S Code last checked for updates: May 02, 2024
All TitlesTitle 42Chapter 6ASubchapter XIIPart B
§ 300g–7.
Monitoring of contaminants
(a)
Interim monitoring relief authority
(1)
In general
A State exercising primary enforcement responsibility for public water systems may modify the monitoring requirements for any regulated or unregulated contaminants for which monitoring is required other than microbial contaminants (or indicators thereof), disinfectants and disinfection byproducts or corrosion byproducts for an interim period to provide that any public water system serving 10,000 persons or fewer shall not be required to conduct additional quarterly monitoring during an interim relief period for such contaminants if—
(A)
monitoring, conducted at the beginning of the period for the contaminant concerned and certified to the State by the public water system, fails to detect the presence of the contaminant in the ground or surface water supplying the public water system; and
(B)
the State, considering the hydrogeology of the area and other relevant factors, determines in writing that the contaminant is unlikely to be detected by further monitoring during such period.
(2)
Termination; timing of monitoring
(b)
Permanent monitoring relief authority
(1)
In general
(2)
Guidelines
(A)
In general
(B)
Definition
(3)
Effect of detection of contaminants
The guidelines issued by the Administrator under paragraph (2) shall require that if, after the monitoring program is in effect and operating, a contaminant covered by the alternative monitoring program is detected at levels at or above the maximum contaminant level or is no longer reliably or consistently below the maximum contaminant level, the public water system must either—
(A)
demonstrate that the contamination source has been removed or that other action has been taken to eliminate the contamination problem; or
(B)
test for the detected contaminant pursuant to the applicable national primary drinking water regulation.
(4)
States not exercising primary enforcement responsibility
(c)
Treatment as NPDWR
(d)
Other monitoring relief
(July 1, 1944, ch. 373, title XIV, § 1418, as added Pub. L. 104–182, title I, § 125(b), Aug. 6, 1996, 110 Stat. 1654.)
cite as: 42 USC 300g-7
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